flake update: nixpkgs-stable 2023-01-15 -> 2023-01-22

```
• Updated input 'nixpkgs-stable':
    'github:nixos/nixpkgs/2f9fd351ec37f5d479556cd48be4ca340da59b8f' (2023-01-15)
  → 'github:nixos/nixpkgs/ab1254087f4cdf4af74b552d7fc95175d9bdbb49' (2023-01-22)
• Updated input 'sops-nix/nixpkgs-stable':
    'github:NixOS/nixpkgs/7c65528c3f8462b902e09d1ccca23bb9034665c2' (2023-01-15)
  → 'github:NixOS/nixpkgs/918b760070bb8f48cb511300fcd7e02e13058a2e' (2023-01-22)
```

flake.lock

@@ -36,29 +36,14 @@
         "type": "github"
       }
     },
-    "impermanence": {
-      "locked": {
-        "lastModified": 1668668915,
-        "narHash": "sha256-QjY4ZZbs9shwO4LaLpvlU2bO9J1juYhO9NtV3nrbnYQ=",
-        "owner": "nix-community",
-        "repo": "impermanence",
-        "rev": "5df9108b346f8a42021bf99e50de89c9caa251c3",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "impermanence",
-        "type": "github"
-      }
-    },
     "mobile-nixos": {
       "flake": false,
       "locked": {
-        "lastModified": 1670131242,
-        "narHash": "sha256-T/o1/3gffr010fsqgNshs1NJJjsnUYvQnUZgm6hilsY=",
+        "lastModified": 1674593731,
+        "narHash": "sha256-RHJOhxqPKLxbLLabbj1IEuUQqO76TOTtmpxYyTtfDmU=",
         "owner": "nixos",
         "repo": "mobile-nixos",
-        "rev": "5ee45cc1f8e43f4af14ee17ccef9156b0db8cd77",
+        "rev": "4d2093efa7efa00131d385fd9d11e54ce16bc57a",
         "type": "github"
       },
       "original": {
@@ -68,42 +53,45 @@
       }
     },
     "nixpkgs": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs-unpatched"
+        ]
+      },
       "locked": {
-        "lastModified": 1671722432,
-        "narHash": "sha256-ojcZUekIQeOZkHHzR81st7qxX99dB1Eaaq6PU5MNeKc=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "652e92b8064949a11bc193b90b74cb727f2a1405",
-        "type": "github"
+        "lastModified": 1,
+        "narHash": "sha256-P5BXhRIaKF6ze3am7CY//NFOJ4ihoys9h0ka9S15VV4=",
+        "path": "/nix/store/41f11k8hk1qjd440mavrybc7xgrcp9gj-source/nixpatches",
+        "type": "path"
       },
       "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-unstable",
-        "type": "indirect"
+        "path": "/nix/store/41f11k8hk1qjd440mavrybc7xgrcp9gj-source/nixpatches",
+        "type": "path"
       }
     },
     "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1671883564,
-        "narHash": "sha256-C15oAtyupmLB3coZY7qzEHXjhtUx/+77olVdqVMruAg=",
-        "owner": "NixOS",
+        "lastModified": 1674407282,
+        "narHash": "sha256-2qwc8mrPINSFdWffPK+ji6nQ9aGnnZyHSItVcYDZDlk=",
+        "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "dac57a4eccf1442e8bf4030df6fcbb55883cb682",
+        "rev": "ab1254087f4cdf4af74b552d7fc95175d9bdbb49",
         "type": "github"
       },
       "original": {
-        "id": "nixpkgs",
+        "owner": "nixos",
         "ref": "nixos-22.11",
-        "type": "indirect"
+        "repo": "nixpkgs",
+        "type": "github"
       }
     },
     "nixpkgs-stable_2": {
       "locked": {
-        "lastModified": 1671923641,
-        "narHash": "sha256-flPauiL5UrfRJD+1oAcEefpEIUqTqnyKScWe/UUU+lE=",
+        "lastModified": 1674352297,
+        "narHash": "sha256-OkAnJPrauEcUCrst4/3DKoQfUn2gXKuU6CFvhtMrLgg=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "939c05a176b8485971463c18c44f48e56a7801c9",
+        "rev": "918b760070bb8f48cb511300fcd7e02e13058a2e",
         "type": "github"
       },
       "original": {
@@ -113,15 +101,31 @@
         "type": "github"
       }
     },
+    "nixpkgs-unpatched": {
+      "locked": {
+        "lastModified": 1674459583,
+        "narHash": "sha256-L0UZl/u2H3HGsrhN+by42c5kNYeKtdmJiPzIRvEVeiM=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "1b1f50645af2a70dc93eae18bfd88d330bfbcf7f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "home-manager": "home-manager",
-        "impermanence": "impermanence",
         "mobile-nixos": "mobile-nixos",
         "nixpkgs": "nixpkgs",
         "nixpkgs-stable": "nixpkgs-stable",
+        "nixpkgs-unpatched": "nixpkgs-unpatched",
         "sops-nix": "sops-nix",
-        "uninsane": "uninsane"
+        "uninsane-dot-org": "uninsane-dot-org"
       }
     },
     "sops-nix": {
@@ -132,11 +136,11 @@
         "nixpkgs-stable": "nixpkgs-stable_2"
       },
       "locked": {
-        "lastModified": 1671937829,
-        "narHash": "sha256-YtaNB+mLw0d67JFYNjRWM+/AL3JCXuD/DGlnTlyX1tY=",
+        "lastModified": 1674546403,
+        "narHash": "sha256-vkyNv0xzXuEnu9v52TUtRugNmQWIti8c2RhYnbLG71w=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "855b8d51fc3991bd817978f0f093aa6ae0fae738",
+        "rev": "b6ab3c61e2ca5e07d1f4eb1b67304e2670ea230c",
         "type": "github"
       },
       "original": {
@@ -145,7 +149,7 @@
         "type": "github"
       }
     },
-    "uninsane": {
+    "uninsane-dot-org": {
       "inputs": {
         "flake-utils": "flake-utils",
         "nixpkgs": [

flake.nix

@@ -1,25 +1,48 @@
-# docs:
-# - <https://nixos.wiki/wiki/Flakes>
+# FLAKE FEEDBACK:
+# - if flake inputs are meant to be human-readable, a human should be able to easily track them down given the URL.
+#   - this is not the case with registry URLs, like `nixpkgs/nixos-22.11`.
+#   - this is marginally the case with schemes like `github:nixos/nixpkgs`.
+#   - given the *existing* `git+https://` scheme, i propose expressing github URLs similarly:
+#     - `github+https://github.com/nixos/nixpkgs/tree/nixos-22.11`
+# - need some way to apply local patches to inputs.
+#
+#
+# DEVELOPMENT DOCS:
+# - Flake docs: <https://nixos.wiki/wiki/Flakes>
+# - Flake RFC: <https://github.com/tweag/rfcs/blob/flakes/rfcs/0049-flakes.md>
+#   - Discussion: <https://github.com/NixOS/rfcs/pull/49>
 # - <https://serokell.io/blog/practical-nix-flakes>
 
 {
+  # XXX: use the `github:` scheme instead of the more readable git+https: because it's *way* more efficient
+  # preferably, i would rewrite the human-readable https URLs to nix-specific github: URLs with a helper,
+  # but `inputs` is required to be a strict attrset: not an expression.
   inputs = {
-    nixpkgs-stable.url = "nixpkgs/nixos-22.11";
-    nixpkgs.url = "nixpkgs/nixos-unstable";
+    # <https://github.com/nixos/nixpkgs/tree/nixos-22.11>
+    nixpkgs-stable.url = "github:nixos/nixpkgs?ref=nixos-22.11";
+
+    # <https://github.com/nixos/nixpkgs/tree/nixos-unstable>
+    nixpkgs-unpatched.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    nixpkgs = {
+      url = "./nixpatches";
+      inputs.nixpkgs.follows = "nixpkgs-unpatched";
+    };
     mobile-nixos = {
+      # <https://github.com/nixos/mobile-nixos>
       url = "github:nixos/mobile-nixos";
       flake = false;
     };
     home-manager = {
-      url = "github:nix-community/home-manager/release-22.05";
+      # <https://github.com/nix-community/home-manager/tree/release-22.05>
+      url = "github:nix-community/home-manager?ref=release-22.05";
       inputs.nixpkgs.follows = "nixpkgs";
     };
     sops-nix = {
+      # <https://github.com/Mic92/sops-nix>
       url = "github:Mic92/sops-nix";
       inputs.nixpkgs.follows = "nixpkgs";
     };
-    impermanence.url = "github:nix-community/impermanence";
-    uninsane = {
+    uninsane-dot-org = {
       url = "git+https://git.uninsane.org/colin/uninsane";
       inputs.nixpkgs.follows = "nixpkgs";
     };
@@ -29,66 +52,56 @@
     self,
     nixpkgs,
     nixpkgs-stable,
+    nixpkgs-unpatched,
     mobile-nixos,
     home-manager,
     sops-nix,
-    impermanence,
-    uninsane
-  }: let
-    patchedPkgs = system: nixpkgs.legacyPackages.${system}.applyPatches {
-      name = "nixpkgs-patched-uninsane";
-      src = nixpkgs;
-      patches = import ./nixpatches/list.nix {
-        inherit (nixpkgs.legacyPackages.${system}) fetchpatch;
-        inherit (nixpkgs.lib) fakeHash;
-      };
-    };
-    # return something which behaves like `pkgs`, for the provided system
-    # `local` = architecture of builder. `target` = architecture of the system beying deployed to
-    nixpkgsFor = local: target: import (patchedPkgs target) { crossSystem = target; localSystem = local; };
-    # evaluate ONLY our overlay, for the provided system
-    customPackagesFor = local: target: import ./pkgs/overlay.nix (nixpkgsFor local target) (nixpkgsFor local target);
-    decl-host = { name, local, target }:
+    uninsane-dot-org
+  }:
     let
-      nixosSystem = import ((patchedPkgs target) + "/nixos/lib/eval-config.nix");
-    in (nixosSystem {
-      # by default the local system is the same as the target, employing emulation when they differ
-      system = target;
-      specialArgs = { inherit mobile-nixos home-manager impermanence; };
-      modules = [
-        ./modules
-        (import ./hosts/instantiate.nix name)
-        home-manager.nixosModule
-        impermanence.nixosModule
-        sops-nix.nixosModules.sops
-        {
-          nixpkgs.overlays = [
-            (import "${mobile-nixos}/overlay/overlay.nix")
-            uninsane.overlay
-            (import ./pkgs/overlay.nix)
-            (next: prev: rec {
-              # non-emulated packages build *from* local *for* target.
-              # for large packages like the linux kernel which are expensive to build under emulation,
-              # the config can explicitly pull such packages from `pkgs.cross` to do more efficient cross-compilation.
-              cross = (nixpkgsFor local target) // (customPackagesFor local target);
-              stable = import nixpkgs-stable { system = target; };
+      nixpkgsCompiledBy = local: nixpkgs.legacyPackages."${local}";
 
-              # cross-compatible packages
-              # gocryptfs = cross.gocryptfs;
+      evalHost = { name, local, target }:
+        let
+          # XXX: we'd prefer to use `nixosSystem = (nixpkgsCompiledBy target).nixos`
+          # but it doesn't propagate config to the underlying pkgs, meaning it doesn't let you use
+          # non-free packages even after setting nixpkgs.allowUnfree.
+          # XXX: patch using the target -- not local -- otherwise the target will
+          # need to emulate the host in order to rebuild!
+          nixosSystem = import ((nixpkgsCompiledBy target).path + "/nixos/lib/eval-config.nix");
+        in
+          (nixosSystem {
+            # we use pkgs built for and *by* the target, i.e. emulation, by default.
+            # cross compilation only happens on explicit access to `pkgs.cross`
+            system = target;
+            modules = [
+              (import ./hosts/instantiate.nix { localSystem = local; hostName = name; })
+              self.nixosModules.default
+              self.nixosModules.passthru
+              {
+                nixpkgs.overlays = [
+                  self.overlays.default
+                  self.overlays.passthru
+                  self.overlays.pins
+                ];
+              }
+            ];
+          });
+    in {
+      nixosConfigurations = {
+        servo = evalHost { name = "servo"; local = "x86_64-linux"; target = "x86_64-linux"; };
+        desko = evalHost { name = "desko"; local = "x86_64-linux"; target = "x86_64-linux"; };
+        lappy = evalHost { name = "lappy"; local = "x86_64-linux"; target = "x86_64-linux"; };
+        moby = evalHost { name = "moby"; local = "aarch64-linux"; target = "aarch64-linux"; };
+        # special cross-compiled variant, to speed up deploys from an x86 box to the arm target
+        # note that these *do* produce different store paths, because the closure for the tools used to cross compile
+        # v.s. emulate differ.
+        # so deploying foo-cross and then foo incurs some rebuilding.
+        moby-cross = evalHost { name = "moby"; local = "x86_64-linux"; target = "aarch64-linux"; };
+        rescue = evalHost { name = "rescue"; local = "x86_64-linux"; target = "x86_64-linux"; };
+      };
 
-              # pinned packages:
-              # 2022/12/13: grpc does not build on aarch64-linux. https://github.com/NixOS/nixpkgs/issues/205887
-              grpc = stable.grpc;
-              # depends on grpc, so pinned.
-              duplicity = stable.duplicity;
-            })
-          ];
-        }
-      ];
-    });
-
-    decl-bootable-host = { name, local, target }: rec {
-      nixosConfiguration = decl-host { inherit name local target; };
+      # unofficial output
       # this produces a EFI-bootable .img file (GPT with a /boot partition and a system (/ or /nix) partition).
       # after building this:
       #   - flash it to a bootable medium (SD card, flash drive, HDD)
@@ -102,40 +115,77 @@
       #   - if fs wasn't resized automatically, then `sudo btrfs filesystem resize max /`
       #   - checkout this flake into /etc/nixos AND UPDATE THE FS UUIDS.
       #   - `nixos-rebuild --flake './#<host>' switch`
-      img = nixosConfiguration.config.system.build.img;
-    };
-    hosts.servo = decl-bootable-host { name = "servo"; local = "x86_64-linux"; target = "x86_64-linux"; };
-    hosts.desko = decl-bootable-host { name = "desko"; local = "x86_64-linux"; target = "x86_64-linux"; };
-    hosts.lappy = decl-bootable-host { name = "lappy"; local = "x86_64-linux"; target = "x86_64-linux"; };
-    hosts.moby = decl-bootable-host { name = "moby"; local = "aarch64-linux"; target = "aarch64-linux"; };
-    # special cross-compiled variant, to speed up deploys from an x86 box to the arm target
-    # note that these *do* produce different store paths, because the closure for the tools used to cross compile
-    # v.s. emulate differ.
-    # so deploying foo-cross and then foo incurs some rebuilding.
-    hosts.moby-cross = decl-bootable-host { name = "moby"; local = "x86_64-linux"; target = "aarch64-linux"; };
-    hosts.rescue = decl-bootable-host { name = "rescue"; local = "x86_64-linux"; target = "x86_64-linux"; };
-  in {
-    nixosConfigurations = builtins.mapAttrs (name: value: value.nixosConfiguration) hosts;
-    imgs = builtins.mapAttrs (name: value: value.img) hosts;
-    packages = let
-      allPkgsFor = sys: (customPackagesFor sys sys) // {
-        nixpkgs = nixpkgsFor sys sys;
-        uninsane = uninsane.packages."${sys}";
+      imgs = builtins.mapAttrs (_: host-dfn: host-dfn.config.system.build.img) self.nixosConfigurations;
+
+      overlays = rec {
+        default = pkgs;
+        pkgs = import ./overlays/pkgs.nix;
+        pins = import ./overlays/pins.nix;  # TODO: move to `nixpatches/` input
+        passthru =
+          let
+            stable = next: prev: {
+              stable = nixpkgs-stable.legacyPackages."${prev.stdenv.hostPlatform.system}";
+            };
+            mobile = (import "${mobile-nixos}/overlay/overlay.nix");
+            uninsane = uninsane-dot-org.overlay;
+          in
+            next: prev:
+              (stable next prev) // (mobile next prev) // (uninsane next prev);
       };
-    in {
-      x86_64-linux = allPkgsFor "x86_64-linux";
-      aarch64-linux = allPkgsFor "aarch64-linux";
-    };
-    templates = {
-      python-data = {
-        # initialize with:
-        # - `nix flake init -t '/home/colin/dev/nixos/#python-data'`
-        # then enter with:
-        # - `nix develop`
-        path = ./templates/python-data;
-        description = "python environment for data processing";
+
+      nixosModules = rec {
+        default = sane;
+        sane = import ./modules;
+        passthru = { ... }: {
+          imports = [
+            home-manager.nixosModule
+            sops-nix.nixosModules.sops
+          ];
+        };
+      };
+
+      # this includes both our native packages and all the nixpkgs packages.
+      legacyPackages =
+        let
+          allPkgsFor = sys: (nixpkgsCompiledBy sys).appendOverlays [
+            self.overlays.passthru self.overlays.pkgs
+          ];
+        in {
+          x86_64-linux = allPkgsFor "x86_64-linux";
+          aarch64-linux = allPkgsFor "aarch64-linux";
+        };
+
+      # extract only our own packages from the full set
+      packages = builtins.mapAttrs
+        (_: full: full.sane // { inherit (full) sane uninsane-dot-org; })
+        self.legacyPackages;
+
+      apps."x86_64-linux" =
+        let
+          pkgs = self.legacyPackages."x86_64-linux";
+        in {
+          update-feeds = {
+            type = "app";
+            program = "${pkgs.feeds.passthru.updateScript}";
+          };
+
+          init-feed = {
+            # use like `nix run '.#init-feed' uninsane.org`
+            type = "app";
+            program = "${pkgs.feeds.passthru.initFeedScript}";
+          };
+        };
+
+      templates = {
+        python-data = {
+          # initialize with:
+          # - `nix flake init -t '/home/colin/dev/nixos/#python-data'`
+          # then enter with:
+          # - `nix develop`
+          path = ./templates/python-data;
+          description = "python environment for data processing";
+        };
       };
     };
-  };
 }
 

hosts/by-name/desko/default.nix

@@ -6,22 +6,24 @@
 
   # sane.packages.enableDevPkgs = true;
 
-  sane.gui.sway.enable = true;
+  sane.roles.client = true;
+  sane.services.wg-home.enable = true;
+  sane.services.wg-home.ip = config.sane.hosts.by-name."desko".wg-home.ip;
   sane.services.duplicity.enable = true;
   sane.services.nixserve.enable = true;
-  sane.services.nixserve.sopsFile = ../../secrets/desko.yaml;
-  sane.impermanence.enable = true;
+  sane.services.nixserve.sopsFile = ../../../secrets/desko.yaml;
+  sane.persist.enable = true;
+
+  sane.gui.sway.enable = true;
 
   boot.loader.efi.canTouchEfiVariables = false;
   sane.image.extraBootFiles = [ pkgs.bootpart-uefi-x86_64 ];
 
   # needed to use libimobiledevice/ifuse, for iphone sync
   services.usbmuxd.enable = true;
-  users.users.usbmux.uid = config.sane.allocations.usbmux-uid;
-  users.groups.usbmux.gid = config.sane.allocations.usbmux-gid;
 
   sops.secrets.colin-passwd = {
-    sopsFile = ../../secrets/desko.yaml;
+    sopsFile = ../../../secrets/desko.yaml;
     neededForUsers = true;
   };
 
@@ -43,7 +45,7 @@
   };
 
   sops.secrets.duplicity_passphrase = {
-    sopsFile = ../../secrets/desko.yaml;
+    sopsFile = ../../../secrets/desko.yaml;
   };
 
   programs.steam = {
@@ -52,7 +54,7 @@
     remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
     dedicatedServer.openFirewall = true; # Open ports in the firewall for Source Dedicated Server
   };
-  sane.impermanence.home-dirs = [
+  sane.persist.home.plaintext = [
     ".steam"
     ".local/share/Steam"
   ];

hosts/by-name/desko/fs.nix

@@ -1,7 +1,7 @@
 { ... }:
 
 {
-  sane.impermanence.root-on-tmpfs = true;
+  sane.persist.root-on-tmpfs = true;
   # we need a /tmp for building large nix things.
   # a cross-compiled kernel, particularly, will easily use 30+GB of tmp
   fileSystems."/tmp" = {

hosts/by-name/lappy/default.nix

@@ -1,20 +1,24 @@
-{ pkgs, ... }:
+{ config, pkgs, ... }:
 {
   imports = [
     ./fs.nix
   ];
 
+  sane.roles.client = true;
+  sane.services.wg-home.enable = true;
+  sane.services.wg-home.ip = config.sane.hosts.by-name."lappy".wg-home.ip;
+
   # sane.packages.enableDevPkgs = true;
 
   # sane.users.guest.enable = true;
   sane.gui.sway.enable = true;
-  sane.impermanence.enable = true;
+  sane.persist.enable = true;
   sane.nixcache.enable = true;
   boot.loader.efi.canTouchEfiVariables = false;
   sane.image.extraBootFiles = [ pkgs.bootpart-uefi-x86_64 ];
 
   sops.secrets.colin-passwd = {
-    sopsFile = ../../secrets/lappy.yaml;
+    sopsFile = ../../../secrets/lappy.yaml;
     neededForUsers = true;
   };
 

hosts/by-name/lappy/fs.nix

@@ -1,7 +1,7 @@
 { ... }:
 
 {
-  sane.impermanence.root-on-tmpfs = true;
+  sane.persist.root-on-tmpfs = true;
   # we need a /tmp of default size (half RAM) for building large nix things
   fileSystems."/tmp" = {
     device = "none";

hosts/by-name/moby/default.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, lib, mobile-nixos, ... }:
+{ config, pkgs, lib, ... }:
 {
   imports = [
     ./firmware.nix
@@ -6,6 +6,10 @@
     ./kernel.nix
   ];
 
+  sane.roles.client = true;
+  sane.services.wg-home.enable = true;
+  sane.services.wg-home.ip = config.sane.hosts.by-name."moby".wg-home.ip;
+
   # cross-compiled documentation is *slow*.
   # no obvious way to natively compile docs (2022/09/29).
   # entrypoint is nixos/modules/misc/documentation.nix
@@ -19,13 +23,14 @@
   services.getty.autologinUser = "root";  # allows for emergency maintenance?
 
   sops.secrets.colin-passwd = {
-    sopsFile = ../../secrets/moby.yaml;
+    sopsFile = ../../../secrets/moby.yaml;
     neededForUsers = true;
   };
 
   # usability compromises
-  sane.impermanence.home-dirs = [
-    config.sane.web-browser.dotDir
+  sane.web-browser.persistCache = "private";
+  sane.web-browser.persistData = "private";
+  sane.persist.home.plaintext = [
     ".config/pulse"  # persist pulseaudio volume
   ];
 
@@ -35,7 +40,7 @@
   ];
 
   sane.nixcache.enable = true;
-  sane.impermanence.enable = true;
+  sane.persist.enable = true;
   sane.gui.phosh.enable = true;
 
   boot.loader.efi.canTouchEfiVariables = false;
@@ -53,9 +58,10 @@
 
   # without this some GUI apps fail: `DRM_IOCTL_MODE_CREATE_DUMB failed: Cannot allocate memory`
   # this is because they can't allocate enough video ram.
-  # the default CMA seems to be 32M. we could probably get by with as little as 64M, and safely with 128M.
+  # the default CMA seems to be 32M.
+  # i was running fine with 256MB from 2022/07-ish through 2022/12-ish, but then the phone quit reliably coming back from sleep: maybe a memory leak?
   # `cat /proc/meminfo` to see CmaTotal/CmaFree if interested in tuning this.
-  boot.kernelParams = [ "cma=256M" ];
+  boot.kernelParams = [ "cma=384M" ];
 
   # mobile-nixos' /lib/firmware includes:
   #   rtl_bt          (bluetooth)

hosts/by-name/moby/fs.nix

@@ -1,7 +1,7 @@
 { ... }:
 
 {
-  sane.impermanence.root-on-tmpfs = true;
+  sane.persist.root-on-tmpfs = true;
   fileSystems."/nix" = {
     device = "/dev/disk/by-uuid/1f1271f8-53ce-4081-8a29-60a4a6b5d6f9";
     fsType = "btrfs";

hosts/by-name/moby/kernel.nix

@@ -125,6 +125,9 @@ in
         # aarch64-unknown-linux-gnu-gcc: error: unrecognized command line option '-mfpu=neon'
         # make[3]: *** [../scripts/Makefile.build:289: drivers/video/fbdev/sun5i-eink-neon.o] Error 1
         FB_SUN5I_EINK = no;
+        # used by the pinephone pro, but fails to compile with:
+        # ../drivers/media/i2c/ov8858.c:1834:27: error: implicit declaration of function 'compat_ptr'
+        VIDEO_OV8858 = no;
       })
     ))
   ];

hosts/by-name/rescue/default.nix

@@ -8,9 +8,6 @@
   boot.loader.efi.canTouchEfiVariables = false;
   sane.image.extraBootFiles = [ pkgs.bootpart-uefi-x86_64 ];
 
-  users.users.dhcpcd.uid = config.sane.allocations.dhcpcd-uid;
-  users.groups.dhcpcd.gid = config.sane.allocations.dhcpcd-gid;
-
   # docs: https://nixos.org/manual/nixos/stable/options.html#opt-system.stateVersion
   system.stateVersion = "21.05";
 }

hosts/by-name/servo/default.nix

@@ -1,29 +1,32 @@
-{ pkgs, ... }:
+{ config, pkgs, ... }:
 
 {
   imports = [
     ./fs.nix
     ./net.nix
-    ./users.nix
+    ./secrets.nix
     ./services
   ];
 
-  sane.packages.extraUserPkgs = [
+  sane.packages.extraUserPkgs = with pkgs; [
     # for administering services
-    pkgs.matrix-synapse
-    pkgs.freshrss
+    freshrss
+    matrix-synapse
+    signaldctl
   ];
-  sane.impermanence.enable = true;
+  sane.persist.enable = true;
   sane.services.dyn-dns.enable = true;
+  sane.services.wg-home.enable = true;
+  sane.services.wg-home.ip = config.sane.hosts.by-name."servo".wg-home.ip;
   # sane.services.duplicity.enable = true;  # TODO: re-enable after HW upgrade
 
+  # automatically log in at the virtual consoles.
+  # using root here makes sure we always have an escape hatch
+  services.getty.autologinUser = "root";
+
   boot.loader.efi.canTouchEfiVariables = false;
   sane.image.extraBootFiles = [ pkgs.bootpart-uefi-x86_64 ];
 
-  sops.secrets.duplicity_passphrase = {
-    sopsFile = ../../secrets/servo.yaml;
-  };
-
   # both transmission and ipfs try to set different net defaults.
   # we just use the most aggressive of the two here:
   boot.kernel.sysctl = {

hosts/by-name/servo/fs.nix

@@ -1,7 +1,7 @@
 { ... }:
 
 {
-  sane.impermanence.root-on-tmpfs = true;
+  sane.persist.root-on-tmpfs = true;
   # we need a /tmp for building large nix things
   fileSystems."/tmp" = {
     device = "none";
@@ -27,7 +27,7 @@
   };
 
   # slow, external storage (for archiving, etc)
-  fileSystems."/nix/persist/ext" = {
+  fileSystems."/mnt/persist/ext" = {
     device = "/dev/disk/by-uuid/aa272cff-0fcc-498e-a4cb-0d95fb60631b";
     fsType = "btrfs";
     options = [
@@ -36,27 +36,31 @@
     ];
   };
 
-  sane.impermanence.dirs = [
+  sane.persist.stores."ext" = {
+    origin = "/mnt/persist/ext/persist";
+    storeDescription = "external HDD storage";
+  };
+  sane.fs."/mnt/persist/ext".mount = {};
+
+  sane.persist.sys.plaintext = [
     # TODO: this is overly broad; only need media and share directories to be persisted
     { user = "colin"; group = "users"; directory = "/var/lib/uninsane"; }
   ];
-  # direct these media directories to external storage
-  environment.persistence."/nix/persist/ext/persist" = {
-    directories = [
-      ({
-        user = "colin";
-        group = "users";
-        mode = "0777";
-        directory = "/var/lib/uninsane/media/Videos";
-      })
-      ({
-        user = "colin";
-        group = "users";
-        mode = "0777";
-        directory = "/var/lib/uninsane/media/freeleech";
-      })
-    ];
-  };
+  # make sure large media is stored to the HDD
+  sane.persist.sys.ext = [
+    {
+      user = "colin";
+      group = "users";
+      mode = "0777";
+      directory = "/var/lib/uninsane/media/Videos";
+    }
+    {
+      user = "colin";
+      group = "users";
+      mode = "0777";
+      directory = "/var/lib/uninsane/media/freeleech";
+    }
+  ];
 
   # in-memory compressed RAM (seems to be dynamically sized)
   # zramSwap = {

hosts/by-name/servo/net.nix

@@ -52,18 +52,18 @@
 
   # services.resolved.extraConfig = ''
   #   # docs: `man resolved.conf`
-  #   # DNS servers to use via the `wg0` interface.
+  #   # DNS servers to use via the `wg-ovpns` interface.
   #   #   i hope that from the root ns, these aren't visible.
-  #   DNS=46.227.67.134%wg0 192.165.9.158%wg0
+  #   DNS=46.227.67.134%wg-ovpns 192.165.9.158%wg-ovpns
   #   FallbackDNS=1.1.1.1 9.9.9.9
   # '';
 
   # OVPN CONFIG (https://www.ovpn.com):
   # DOCS: https://nixos.wiki/wiki/WireGuard
-  # if you `systemctl restart wireguard-wg0`, make sure to also restart any other services in `NetworkNamespacePath = .../ovpns`.
+  # if you `systemctl restart wireguard-wg-ovpns`, make sure to also restart any other services in `NetworkNamespacePath = .../ovpns`.
   # TODO: why not create the namespace as a seperate operation (nix config for that?)
   networking.wireguard.enable = true;
-  networking.wireguard.interfaces.wg0 = let
+  networking.wireguard.interfaces.wg-ovpns = let
     ip = "${pkgs.iproute2}/bin/ip";
     in-ns = "${ip} netns exec ovpns";
     iptables = "${pkgs.iptables}/bin/iptables";
@@ -159,13 +159,10 @@
   # create a new routing table that we can use to proxy traffic out of the root namespace
   # through the ovpns namespace, and to the WAN via VPN.
   networking.iproute2.rttablesExtraConfig = ''
-  5 ovpns
+    5 ovpns
   '';
   networking.iproute2.enable = true;
 
-  sops.secrets."wg_ovpns_privkey" = {
-    sopsFile = ../../secrets/servo.yaml;
-  };
 
   # HURRICANE ELECTRIC CONFIG:
   # networking.sits = {

hosts/by-name/servo/secrets.nix

@@ -0,0 +1,41 @@
+{ ... }:
+
+{
+  sops.secrets."ddns_afraid" = {
+    sopsFile = ../../../secrets/servo.yaml;
+  };
+  sops.secrets."ddns_he" = {
+    sopsFile = ../../../secrets/servo.yaml;
+  };
+
+  sops.secrets."dovecot_passwd" = {
+    sopsFile = ../../../secrets/servo.yaml;
+  };
+
+  sops.secrets."duplicity_passphrase" = {
+    sopsFile = ../../../secrets/servo.yaml;
+  };
+
+  sops.secrets."freshrss_passwd" = {
+    sopsFile = ../../../secrets/servo.yaml;
+  };
+
+  sops.secrets."matrix_synapse_secrets" = {
+    sopsFile = ../../../secrets/servo.yaml;
+  };
+  sops.secrets."mautrix_signal_env" = {
+    sopsFile = ../../../secrets/servo/mautrix_signal_env.bin;
+  };
+
+  sops.secrets."mediawiki_pw" = {
+    sopsFile = ../../../secrets/servo.yaml;
+  };
+
+  sops.secrets."pleroma_secrets" = {
+    sopsFile = ../../../secrets/servo.yaml;
+  };
+
+  sops.secrets."wg_ovpns_privkey" = {
+    sopsFile = ../../../secrets/servo.yaml;
+  };
+}

hosts/by-name/servo/services/ddns-afraid.nix

@@ -24,8 +24,4 @@ lib.mkIf false
       OnUnitActiveSec = "10min";
     };
   };
-
-  sops.secrets."ddns_afraid" = {
-    sopsFile = ../../../secrets/servo.yaml;
-  };
 }

hosts/by-name/servo/services/ddns-he.nix

@@ -27,8 +27,4 @@ lib.mkIf false
       OnUnitActiveSec = "10min";
     };
   };
-
-  sops.secrets."ddns_he" = {
-    sopsFile = ../../../secrets/servo.yaml;
-  };
 }

hosts/by-name/servo/services/ejabberd.nix

@@ -19,7 +19,7 @@
 # XXX: avatar support works in MUCs but not DMs
 # lib.mkIf false
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     { user = "ejabberd"; group = "ejabberd"; directory = "/var/lib/ejabberd"; }
   ];
   networking.firewall.allowedTCPPorts = [
@@ -46,6 +46,8 @@
   }];
 
   # provide access to certs
+  # TODO: this should just be `acme`. then we also add nginx to the `acme` group.
+  #   why is /var/lib/acme/* owned by `nginx` group??
   users.users.ejabberd.extraGroups = [ "nginx" ];
 
   security.acme.certs."uninsane.org".extraDomainNames = [
@@ -75,33 +77,33 @@
 
   sane.services.trust-dns.zones."uninsane.org".inet = {
     # XXX: SRV records have to point to something with a A/AAAA record; no CNAMEs
-    A."xmpp" =                [ "%NATIVE%" ];
-    CNAME."muc.xmpp" =        [ "xmpp" ];
-    CNAME."pubsub.xmpp" =     [ "xmpp" ];
-    CNAME."upload.xmpp" =     [ "xmpp" ];
-    CNAME."vjid.xmpp" =       [ "xmpp" ];
+    A."xmpp" =                "%NATIVE%";
+    CNAME."muc.xmpp" =        "xmpp";
+    CNAME."pubsub.xmpp" =     "xmpp";
+    CNAME."upload.xmpp" =     "xmpp";
+    CNAME."vjid.xmpp" =       "xmpp";
 
     # _Service._Proto.Name    TTL Class SRV    Priority Weight Port Target
     # - <https://xmpp.org/extensions/xep-0368.html>
     # something's requesting the SRV records for muc.xmpp, so let's include it
     # nothing seems to request XMPP SRVs for the other records (except @)
     # lower numerical priority field tells clients to prefer this method
-    SRV."_xmpps-client._tcp.muc.xmpp" =       [ "3 50 5223 xmpp" ];
-    SRV."_xmpps-server._tcp.muc.xmpp" =       [ "3 50 5270 xmpp" ];
-    SRV."_xmpp-client._tcp.muc.xmpp" =        [ "5 50 5222 xmpp" ];
-    SRV."_xmpp-server._tcp.muc.xmpp" =        [ "5 50 5269 xmpp" ];
+    SRV."_xmpps-client._tcp.muc.xmpp" =       "3 50 5223 xmpp";
+    SRV."_xmpps-server._tcp.muc.xmpp" =       "3 50 5270 xmpp";
+    SRV."_xmpp-client._tcp.muc.xmpp" =        "5 50 5222 xmpp";
+    SRV."_xmpp-server._tcp.muc.xmpp" =        "5 50 5269 xmpp";
 
-    SRV."_xmpps-client._tcp" =                [ "3 50 5223 xmpp" ];
-    SRV."_xmpps-server._tcp" =                [ "3 50 5270 xmpp" ];
-    SRV."_xmpp-client._tcp" =                 [ "5 50 5222 xmpp" ];
-    SRV."_xmpp-server._tcp" =                 [ "5 50 5269 xmpp" ];
+    SRV."_xmpps-client._tcp" =                "3 50 5223 xmpp";
+    SRV."_xmpps-server._tcp" =                "3 50 5270 xmpp";
+    SRV."_xmpp-client._tcp" =                 "5 50 5222 xmpp";
+    SRV."_xmpp-server._tcp" =                 "5 50 5269 xmpp";
 
-    SRV."_stun._udp" =                        [ "5 50 3478 xmpp" ];
-    SRV."_stun._tcp" =                        [ "5 50 3478 xmpp" ];
-    SRV."_stuns._tcp" =                       [ "5 50 5349 xmpp" ];
-    SRV."_turn._udp" =                        [ "5 50 3478 xmpp" ];
-    SRV."_turn._tcp" =                        [ "5 50 3478 xmpp" ];
-    SRV."_turns._tcp" =                       [ "5 50 5349 xmpp" ];
+    SRV."_stun._udp" =                        "5 50 3478 xmpp";
+    SRV."_stun._tcp" =                        "5 50 3478 xmpp";
+    SRV."_stuns._tcp" =                       "5 50 5349 xmpp";
+    SRV."_turn._udp" =                        "5 50 3478 xmpp";
+    SRV."_turn._tcp" =                        "5 50 3478 xmpp";
+    SRV."_turns._tcp" =                       "5 50 5349 xmpp";
   };
 
   # TODO: allocate UIDs/GIDs ?

hosts/by-name/servo/services/freshrss.nix

@@ -9,19 +9,16 @@
 # $ sudo -u freshrss -g freshrss FRESHRSS_DATA_PATH=/var/lib/freshrss ./result/cli/export-opml-for-user.php --user admin
 # ```
 
-{ config, lib, pkgs, ... }:
+{ config, lib, pkgs, sane-lib, ... }:
 {
-  sops.secrets.freshrss_passwd = {
-    sopsFile = ../../../secrets/servo.yaml;
+  sops.secrets."freshrss_passwd" = {
     owner = config.users.users.freshrss.name;
-    mode = "400";
+    mode = "0400";
   };
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     { user = "freshrss"; group = "freshrss"; directory = "/var/lib/freshrss"; }
   ];
 
-  users.users.freshrss.uid = config.sane.allocations.freshrss-uid;
-  users.groups.freshrss.gid = config.sane.allocations.freshrss-gid;
   services.freshrss.enable = true;
   services.freshrss.baseUrl = "https://rss.uninsane.org";
   services.freshrss.virtualHost = "rss.uninsane.org";
@@ -29,9 +26,11 @@
 
   systemd.services.freshrss-import-feeds =
   let
+    feeds = sane-lib.feeds;
     fresh = config.systemd.services.freshrss-config;
-    feeds = import ../../../modules/home-manager/feeds.nix { inherit lib; };
-    opml = pkgs.writeText "sane-freshrss.opml" (feeds.feedsToOpml feeds.all);
+    all-feeds = config.sane.feeds;
+    wanted-feeds = feeds.filterByFormat ["text" "image"] all-feeds;
+    opml = pkgs.writeText "sane-freshrss.opml" (feeds.feedsToOpml wanted-feeds);
   in {
     inherit (fresh) wantedBy environment;
     serviceConfig = {
@@ -42,7 +41,10 @@
     description = "import sane RSS feed list";
     after = [ "freshrss-config.service" ];
     script = ''
-      ${pkgs.freshrss}/cli/import-for-user.php --user admin --filename ${opml}
+      # easiest way to preserve feeds: delete the user, recreate it, import feeds
+      ${pkgs.freshrss}/cli/delete-user.php --user colin || true
+      ${pkgs.freshrss}/cli/create-user.php --user colin --password "$(cat ${config.services.freshrss.passwordFile})" || true
+      ${pkgs.freshrss}/cli/import-for-user.php --user colin --filename ${opml}
     '';
   };
 
@@ -57,5 +59,5 @@
     # the routing is handled by services.freshrss.virtualHost
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."rss" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."rss" = "native";
 }

hosts/by-name/servo/services/gitea.nix

@@ -1,11 +1,10 @@
 { config, pkgs, lib, ... }:
 
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode? could be more granular
     { user = "git"; group = "gitea"; directory = "/var/lib/gitea"; }
   ];
-  users.groups.gitea.gid = config.sane.allocations.gitea-gid;
   services.gitea.enable = true;
   services.gitea.user = "git";  # default is 'gitea'
   services.gitea.database.type = "postgres";
@@ -16,6 +15,17 @@
   services.gitea.settings.session.COOKIE_SECURE = true;
   # services.gitea.disableRegistration = true;
 
+  # gitea doesn't create the git user
+  users.users.git = {
+    description = "Gitea Service";
+    home = "/var/lib/gitea";
+    useDefaultShell = true;
+    group = "gitea";
+    isSystemUser = true;
+    # sendmail access (not 100% sure if this is necessary)
+    extraGroups = [ "postdrop" ];
+  };
+
   services.gitea.settings = {
     server = {
       # options: "home", "explore", "organizations", "login" or URL fragment (or full URL)
@@ -85,5 +95,5 @@
     };
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."git" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."git" = "native";
 }

hosts/by-name/servo/services/goaccess.nix

@@ -64,5 +64,5 @@
     };
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."sink" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."sink" = "native";
 }

hosts/by-name/servo/services/ipfs.nix

@@ -10,7 +10,7 @@
 
 lib.mkIf false # i don't actively use ipfs anymore
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode? could be more granular
     { user = "261"; group = "261"; directory = "/var/lib/ipfs"; }
   ];
@@ -34,7 +34,7 @@ lib.mkIf false # i don't actively use ipfs anymore
     };
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."ipfs" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."ipfs" = "native";
 
   # services.ipfs.enable = true;
   services.kubo.localDiscovery = true;

hosts/by-name/servo/services/jackett.nix

@@ -1,14 +1,14 @@
 { ... }:
 
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode? we only need this to save Indexer creds ==> migrate to config?
     { user = "root"; group = "root"; directory = "/var/lib/jackett"; }
   ];
   services.jackett.enable = true;
 
-  systemd.services.jackett.after = [ "wireguard-wg0.service" ];
-  systemd.services.jackett.partOf = [ "wireguard-wg0.service" ];
+  systemd.services.jackett.after = [ "wireguard-wg-ovpns.service" ];
+  systemd.services.jackett.partOf = [ "wireguard-wg-ovpns.service" ];
   systemd.services.jackett.serviceConfig = {
     # run this behind the OVPN static VPN
     NetworkNamespacePath = "/run/netns/ovpns";
@@ -27,6 +27,6 @@
     };
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."jackett" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."jackett" = "native";
 }
 

hosts/by-name/servo/services/jellyfin.nix

@@ -7,7 +7,7 @@ lib.mkIf false
   networking.firewall.allowedUDPPorts = [
     1900 7359 # DLNA: https://jellyfin.org/docs/general/networking/index.html
   ];
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode? could be more granular
     { user = "jellyfin"; group = "jellyfin"; directory = "/var/lib/jellyfin"; }
   ];
@@ -61,9 +61,7 @@ lib.mkIf false
     };
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."jelly" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."jelly" = "native";
 
-  # users.users.jellyfin.uid = config.sane.allocations.jellyfin-uid;
-  # users.groups.jellyfin.gid = config.sane.allocations.jellyfin-gid;
   services.jellyfin.enable = true;
 }

hosts/by-name/servo/services/kiwix-serve.nix

@@ -13,5 +13,5 @@
     locations."/".proxyPass = "http://127.0.0.1:8013";
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."w" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."w" = "native";
 }

hosts/by-name/servo/services/matrix/default.nix

@@ -6,9 +6,13 @@
   imports = [
     ./discord-puppet.nix
     # ./irc.nix
+    ./signal.nix
   ];
 
-  sane.impermanence.dirs = [
+  # allow synapse to read the registration files of its appservices
+  users.users.matrix-synapse.extraGroups = [ "mautrix-signal" ];
+
+  sane.persist.sys.plaintext = [
     { user = "matrix-synapse"; group = "matrix-synapse"; directory = "/var/lib/matrix-synapse"; }
   ];
   services.matrix-synapse.enable = true;
@@ -122,13 +126,12 @@
   };
 
   sane.services.trust-dns.zones."uninsane.org".inet = {
-    CNAME."matrix" = [ "native" ];
-    CNAME."web.matrix" = [ "native" ];
+    CNAME."matrix" = "native";
+    CNAME."web.matrix" = "native";
   };
 
 
-  sops.secrets.matrix_synapse_secrets = {
-    sopsFile = ../../../../secrets/servo.yaml;
+  sops.secrets."matrix_synapse_secrets" = {
     owner = config.users.users.matrix-synapse.name;
   };
 }

hosts/by-name/servo/services/matrix/discord-puppet.nix

@@ -1,6 +1,6 @@
 { lib, ... }:
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     { user = "matrix-synapse"; group = "matrix-synapse"; directory = "/var/lib/mx-puppet-discord"; }
   ];
 
@@ -43,6 +43,7 @@
     };
   };
 
+  # TODO: should use a dedicated user
   systemd.services.mx-puppet-discord.serviceConfig = {
     # fix up to not use /var/lib/private, but just /var/lib
     DynamicUser = lib.mkForce false;

hosts/by-name/servo/services/matrix/irc.nix

@@ -1,7 +1,7 @@
 { config, lib, ... }:
 
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode?
     # user and group are both "matrix-appservice-irc"
     { user = "993"; group = "992"; directory = "/var/lib/matrix-appservice-irc"; }

hosts/by-name/servo/services/matrix/signal.nix

@@ -0,0 +1,34 @@
+# config options:
+# - <https://github.com/mautrix/signal/blob/master/mautrix_signal/example-config.yaml>
+{ config, pkgs, ... }:
+{
+  services.signald.enable = true;
+  services.mautrix-signal.enable = true;
+  services.mautrix-signal.environmentFile =
+    config.sops.secrets.mautrix_signal_env.path;
+
+  services.mautrix-signal.settings.signal.socket_path = "/run/signald/signald.sock";
+  services.mautrix-signal.settings.homeserver.domain = "uninsane.org";
+  services.mautrix-signal.settings.bridge.permissions."@colin:uninsane.org" = "admin";
+  services.matrix-synapse.settings.app_service_config_files = [
+    # auto-created by mautrix-signal service
+    "/var/lib/mautrix-signal/signal-registration.yaml"
+  ];
+
+  systemd.services.mautrix-signal.serviceConfig = {
+    # allow communication to signald
+    SupplementaryGroups = [ "signald" ];
+    ReadWritePaths = [ "/run/signald" ];
+  };
+
+  sane.persist.sys.plaintext = [
+    { user = "mautrix-signal"; group = "mautrix-signal"; directory = "/var/lib/mautrix-signal"; }
+  ];
+
+  sops.secrets."mautrix_signal_env" = {
+    format = "binary";
+    mode = "0440";
+    owner = config.users.users.mautrix-signal.name;
+    group = config.users.users.matrix-synapse.name;
+  };
+}

hosts/by-name/servo/services/navidrome.nix

@@ -1,8 +1,8 @@
-{ ... }:
+{ lib, ... }:
 
 {
-  sane.impermanence.dirs = [
-    { user = "navidrome"; group = "navidrome"; directory = "/var/lib/private/navidrome"; }
+  sane.persist.sys.plaintext = [
+    { user = "navidrome"; group = "navidrome"; directory = "/var/lib/navidrome"; }
   ];
   services.navidrome.enable = true;
   services.navidrome.settings = {
@@ -15,6 +15,20 @@
     ScanSchedule = "@every 1h";
   };
 
+  systemd.services.navidrome.serviceConfig = {
+    # fix to use a normal user so we can configure perms correctly
+    DynamicUser = lib.mkForce false;
+    User = "navidrome";
+    Group = "navidrome";
+  };
+
+  users.groups.navidrome = {};
+
+  users.users.navidrome = {
+    group = "navidrome";
+    isSystemUser = true;
+  };
+
   services.nginx.virtualHosts."music.uninsane.org" = {
     forceSSL = true;
     enableACME = true;
@@ -22,5 +36,5 @@
     locations."/".proxyPass = "http://127.0.0.1:4533";
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."music" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."music" = "native";
 }

hosts/by-name/servo/services/nginx.nix

@@ -1,9 +1,9 @@
 # docs: https://nixos.wiki/wiki/Nginx
-{ config, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
 let
   # make the logs for this host "public" so that they show up in e.g. metrics
-  publog = vhost: vhost // {
+  publog = vhost: lib.attrsets.unionOfDisjoint vhost {
     extraConfig = (vhost.extraConfig or "") + ''
       access_log /var/log/nginx/public.log vcombined;
     '';
@@ -120,9 +120,7 @@ in
   security.acme.acceptTerms = true;
   security.acme.defaults.email = "admin.acme@uninsane.org";
 
-  users.users.acme.uid = config.sane.allocations.acme-uid;
-  users.groups.acme.gid = config.sane.allocations.acme-gid;
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode?
     { user = "acme"; group = "acme"; directory = "/var/lib/acme"; }
     { user = "colin"; group = "users"; directory = "/var/www/sites"; }

hosts/by-name/servo/services/nixserve.nix

@@ -14,8 +14,8 @@
     '';
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."nixcache" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."nixcache" = "native";
 
   sane.services.nixserve.enable = true;
-  sane.services.nixserve.sopsFile = ../../../secrets/servo.yaml;
+  sane.services.nixserve.sopsFile = ../../../../secrets/servo.yaml;
 }

hosts/by-name/servo/services/pleroma.nix

@@ -6,12 +6,10 @@
 { config, pkgs, ... }:
 
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode? could be more granular
     { user = "pleroma"; group = "pleroma"; directory = "/var/lib/pleroma"; }
   ];
-  users.users.pleroma.uid = config.sane.allocations.pleroma-uid;
-  users.groups.pleroma.gid = config.sane.allocations.pleroma-gid;
   services.pleroma.enable = true;
   services.pleroma.secretConfigFile = config.sops.secrets.pleroma_secrets.path;
   services.pleroma.configs = [
@@ -113,7 +111,7 @@
     ''
   ];
 
-  systemd.services.pleroma.path = [ 
+  systemd.services.pleroma.path = [
     # something inside pleroma invokes `sh` w/o specifying it by path, so this is needed to allow pleroma to start
     pkgs.bash
     # used by Pleroma to strip geo tags from uploads
@@ -137,6 +135,11 @@
   #   CapabilityBoundingSet = lib.mkForce "~";
   # };
 
+  # this is required to allow pleroma to send email.
+  # raw `sendmail` works, but i think pleroma's passing it some funny flags or something, idk.
+  # hack to fix that.
+  users.users.pleroma.extraGroups = [ "postdrop" ];
+
   # Pleroma server and web interface
   # TODO: enable publog?
   services.nginx.virtualHosts."fed.uninsane.org" = {
@@ -179,10 +182,9 @@
     };
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."fed" = [ "native" ];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."fed" = "native";
 
-  sops.secrets.pleroma_secrets = {
-    sopsFile = ../../../secrets/servo.yaml;
+  sops.secrets."pleroma_secrets" = {
     owner = config.users.users.pleroma.name;
   };
 }

hosts/by-name/servo/services/postfix.nix

@@ -16,7 +16,7 @@ let
   };
 in
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode? could be more granular
     { user = "opendkim"; group = "opendkim"; directory = "/var/lib/opendkim"; }
     { user = "root"; group = "root"; directory = "/var/lib/postfix"; }
@@ -45,22 +45,22 @@ in
 
 
   sane.services.trust-dns.zones."uninsane.org".inet = {
-    MX."@" = [ "10 mx.uninsane.org." ];
+    MX."@" = "10 mx.uninsane.org.";
     # XXX: RFC's specify that the MX record CANNOT BE A CNAME
-    A."mx" = [ "185.157.162.178" ];
-    CNAME."imap" = [ "native" ];
+    A."mx" = "185.157.162.178";
+    CNAME."imap" = "native";
 
     # Sender Policy Framework:
     #   +mx     => mail passes if it originated from the MX
     #   +a      => mail passes if it originated from the A address of this domain
     #   +ip4:.. => mail passes if it originated from this IP
     #   -all    => mail fails if none of these conditions were met
-    TXT."@" = [ "v=spf1 a mx -all" ];
+    TXT."@" = "v=spf1 a mx -all";
 
     # DKIM public key:
-    TXT."mx._domainkey" = [
+    TXT."mx._domainkey" =
       "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCkSyMufc2KrRx3j17e/LyB+3eYSBRuEFT8PUka8EDX04QzCwDPdkwgnj3GNDvnB5Ktb05Cf2SJ/S1OLqNsINxJRWtkVfZd/C339KNh9wrukMKRKNELL9HLUw0bczOI4gKKFqyrRE9qm+4csCMAR79Te9FCjGV/jVnrkLdPT0GtFwIDAQAB"
-    ];
+    ;
 
     # DMARC fields <https://datatracker.ietf.org/doc/html/rfc7489>:
     #   p=none|quarantine|reject: what to do with failures
@@ -75,9 +75,9 @@ in
     #   pct = sampling ratio for punishing failures (default 100 for 100%)
     #   rf = report format
     #   ri = report interval
-    TXT."_dmarc" = [
+    TXT."_dmarc" =
       "v=DMARC1;p=quarantine;sp=reject;rua=mailto:admin+mail@uninsane.org;ruf=mailto:admin+mail@uninsane.org;fo=1:d:s"
-    ];
+    ;
   };
 
   services.postfix.enable = true;
@@ -110,8 +110,8 @@ in
   services.postfix.enableSubmissions = true;
   services.postfix.submissionsOptions = submissionOptions;
 
-  systemd.services.postfix.after = [ "wireguard-wg0.service" ];
-  systemd.services.postfix.partOf = [ "wireguard-wg0.service" ];
+  systemd.services.postfix.after = [ "wireguard-wg-ovpns.service" ];
+  systemd.services.postfix.partOf = [ "wireguard-wg-ovpns.service" ];
   systemd.services.postfix.serviceConfig = {
     # run this behind the OVPN static VPN
     NetworkNamespacePath = "/run/netns/ovpns";
@@ -132,8 +132,8 @@ in
   # keeping this the same as the hostname seems simplest
   services.opendkim.selector = "mx";
 
-  systemd.services.opendkim.after = [ "wireguard-wg0.service" ];
-  systemd.services.opendkim.partOf = [ "wireguard-wg0.service" ];
+  systemd.services.opendkim.after = [ "wireguard-wg-ovpns.service" ];
+  systemd.services.opendkim.partOf = [ "wireguard-wg-ovpns.service" ];
   systemd.services.opendkim.serviceConfig = {
     # run this behind the OVPN static VPN
     NetworkNamespacePath = "/run/netns/ovpns";
@@ -197,8 +197,7 @@ in
     # }
   ];
 
-  sops.secrets.dovecot_passwd = {
-    sopsFile = ../../../secrets/servo.yaml;
+  sops.secrets."dovecot_passwd" = {
     owner = config.users.users.dovecot2.name;
     # TODO: debug why mail can't be sent without this being world-readable
     mode = "0444";

hosts/by-name/servo/services/postgres.nix

@@ -1,7 +1,7 @@
 { ... }:
 
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode?
     { user = "postgres"; group = "postgres"; directory = "/var/lib/postgresql"; }
   ];

hosts/by-name/servo/services/prosody.nix

@@ -9,7 +9,7 @@
 # nixnet runs ejabberd, so revisiting that.
 lib.mkIf false
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     { user = "prosody"; group = "prosody"; directory = "/var/lib/prosody"; }
   ];
   networking.firewall.allowedTCPPorts = [

hosts/by-name/servo/services/transmission.nix

@@ -1,7 +1,7 @@
 { pkgs, ... }:
 
 {
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     # TODO: mode? we need this specifically for the stats tracking in .config/
     { user = "transmission"; group = "transmission"; directory = "/var/lib/transmission"; }
   ];
@@ -40,8 +40,8 @@
   # transmission will by default not allow the world to read its files.
   services.transmission.downloadDirPermissions = "775";
 
-  systemd.services.transmission.after = [ "wireguard-wg0.service" ];
-  systemd.services.transmission.partOf = [ "wireguard-wg0.service" ];
+  systemd.services.transmission.after = [ "wireguard-wg-ovpns.service" ];
+  systemd.services.transmission.partOf = [ "wireguard-wg-ovpns.service" ];
   systemd.services.transmission.serviceConfig = {
     # run this behind the OVPN static VPN
     NetworkNamespacePath = "/run/netns/ovpns";
@@ -75,6 +75,6 @@
     };
   };
 
-  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."bt" = ["native"];
+  sane.services.trust-dns.zones."uninsane.org".inet.CNAME."bt" = "native";
 }
 

hosts/by-name/servo/services/trust-dns.nix

@@ -21,25 +21,25 @@
   # Retry = how long secondary NS should wait until re-querying master after a failure (must be < Refresh)
   # Expire = how long secondary NS should continue to reply to queries after master fails (> Refresh + Retry)
   sane.services.trust-dns.zones."uninsane.org".inet = {
-    SOA."@" = [''
+    SOA."@" = ''
       ns1.uninsane.org. admin-dns.uninsane.org. (
                                       2022122101 ; Serial
                                       4h         ; Refresh
                                       30m        ; Retry
                                       7d         ; Expire
                                       5m)        ; Negative response TTL
-    ''];
-    TXT."rev" = [ "2022122101" ];
+    '';
+    TXT."rev" = "2022122101";
 
     # XXX NS records must also not be CNAME
     # it's best that we keep this identical, or a superset of, what org. lists as our NS.
     # so, org. can specify ns2/ns3 as being to the VPN, with no mention of ns1. we provide ns1 here.
-    A."ns1" = [ "%NATIVE%" ];
-    A."ns2" = [ "185.157.162.178" ];
-    A."ns3" = [ "185.157.162.178" ];
-    A."ovpns" = [ "185.157.162.178" ];
-    A."native" = [ "%NATIVE%" ];
-    A."@" = [ "%NATIVE%" ];
+    A."ns1" =    "%NATIVE%";
+    A."ns2" =    "185.157.162.178";
+    A."ns3" =    "185.157.162.178";
+    A."ovpns" =  "185.157.162.178";
+    A."native" = "%NATIVE%";
+    A."@" =      "%NATIVE%";
     NS."@" = [
       "ns1.uninsane.org."
       "ns2.uninsane.org."

hosts/by-name/servo/services/wikipedia.nix

@@ -8,11 +8,8 @@ lib.mkIf false
 {
   sops.secrets."mediawiki_pw" = {
     owner = config.users.users.mediawiki.name;
-    sopsFile = ../../../secrets/servo.yaml;
   };
 
-  users.users.mediawiki.uid = config.sane.allocations.mediawiki-uid;
-
   services.mediawiki.enable = true;
   services.mediawiki.name = "Uninsane Wiki";
   services.mediawiki.passwordFile = config.sops.secrets.mediawiki_pw.path;

hosts/common/bluetooth.nix

@@ -1,18 +0,0 @@
-{ lib, pkgs, ... }:
-
-{
-  # TODO: don't need to depend on binsh if we were to use a nix-style shebang
-  system.activationScripts.linkBluetoothKeys = let
-    unwrapped = ../../scripts/install-bluetooth;
-    install-bluetooth = pkgs.writeShellApplication {
-      name = "install-bluetooth";
-      runtimeInputs = with pkgs; [ coreutils gnused ];
-      text = ''${unwrapped} "$@"'';
-    };
-  in (lib.stringAfter
-    [ "setupSecrets" "binsh" ]
-    ''
-    ${install-bluetooth}/bin/install-bluetooth /run/secrets/bt
-    ''
-  );
-}

hosts/common/cross.nix

@@ -0,0 +1,22 @@
+{ config, ... }:
+
+let
+  mkCrossFrom = localSystem: pkgs: import pkgs.path {
+    inherit localSystem;
+    crossSystem = pkgs.stdenv.hostPlatform.system;
+    inherit (config.nixpkgs) config overlays;
+  };
+in
+{
+  # the configuration of which specific package set `pkgs.cross` refers to happens elsewhere;
+  # here we just define them all.
+  nixpkgs.overlays = [
+    (next: prev: {
+      # non-emulated packages build *from* local *for* target.
+      # for large packages like the linux kernel which are expensive to build under emulation,
+      # the config can explicitly pull such packages from `pkgs.cross` to do more efficient cross-compilation.
+      crossFrom."x86_64-linux" = mkCrossFrom "x86_64-linux" next;
+      crossFrom."aarch64-linux" = mkCrossFrom "aarch64-linux" next;
+    })
+  ];
+}

hosts/common/default.nix

@@ -1,10 +1,12 @@
 { pkgs, ... }:
 {
   imports = [
-    ./bluetooth.nix
+    ./cross.nix
+    ./feeds.nix
     ./fs.nix
-    ./hardware
+    ./hardware.nix
     ./i2p.nix
+    ./ids.nix
     ./machine-id.nix
     ./net.nix
     ./secrets.nix
@@ -18,16 +20,18 @@
   sane.packages.enableConsolePkgs = true;
   sane.packages.enableSystemPkgs = true;
 
-  sane.impermanence.dirs = [
+  sane.persist.sys.plaintext = [
     "/var/log"
     "/var/backup"  # for e.g. postgres dumps
     # TODO: move elsewhere
     "/var/lib/alsa"                # preserve output levels, default devices
-    "/var/lib/bluetooth"           # preserve bluetooth handshakes
     "/var/lib/colord"              # preserve color calibrations (?)
     "/var/lib/machines"            # maybe not needed, but would be painful to add a VM and forget.
   ];
 
+  # some services which use private directories error if the parent (/var/lib/private) isn't 700.
+  sane.fs."/var/lib/private".dir.acl.mode = "0700";
+
   nixpkgs.config.allowUnfree = true;
 
   # time.timeZone = "America/Los_Angeles";
@@ -37,6 +41,11 @@
   nix.extraOptions = ''
     experimental-features = nix-command flakes
   '';
+  # allow `nix-shell` (and probably nix-index?) to locate our patched and custom packages
+  nix.nixPath = [
+    "nixpkgs=${pkgs.path}"
+    "nixpkgs-overlays=${../..}/overlays"
+  ];
 
   # TODO: move this into home-manager?
   fonts = {

hosts/common/feeds.nix

@@ -1,5 +1,4 @@
-{ lib }:
-
+{ lib, sane-data, ... }:
 let
   hourly = { freq = "hourly"; };
   daily = { freq = "daily"; };
@@ -14,65 +13,87 @@ let
   uncat = { cat = "uncat"; };
 
   text = { format = "text"; };
-  image = { format = "image"; };
-  podcast = { format = "podcast"; };
 
   mkRss = format: url: { inherit url format; } // uncat // infrequent;
   # format-specific helpers
-  mkText = mkRss text;
-  mkImg = mkRss image;
-  mkPod = mkRss podcast;
+  mkText = mkRss "text";
+  mkImg = mkRss "image";
+  mkPod = mkRss "podcast";
 
   # host-specific helpers
-  mkSubstack = subdomain: mkText "https://${subdomain}.substack.com/feed";
+  mkSubstack = subdomain: { substack = subdomain; };
+
+  fromDb = name:
+    let
+      raw = sane-data.feeds."${name}";
+    in {
+      url = raw.url;
+      # not sure the exact mapping with velocity here: entries per day?
+      freq = lib.mkDefault (
+        if raw.velocity or 0 > 2 then
+          "hourly"
+        else if raw.velocity or 0 > 0.5 then
+          "daily"
+        else if raw.velocity or 0 > 0.1 then
+          "weekly"
+        else
+          "infrequent"
+      );
+    } // lib.optionalAttrs (raw.is_podcast or false) {
+      format = "podcast";
+    } // lib.optionalAttrs (raw.title or "" != "") {
+      title = lib.mkDefault raw.title;
+    };
 
-  # merge the attrs `new` into each value of the attrs `addTo`
-  addAttrs = new: addTo: builtins.mapAttrs (k: v: v // new) addTo;
-  # for each value in `attrs`, add a value to the child attrs which holds its key within the parent attrs.
-  withInverseMapping = key: attrs: builtins.mapAttrs (k: v: v // { "${key}" = k; }) attrs;
-in rec {
   podcasts = [
-    (mkPod "https://lexfridman.com/feed/podcast/" // rat // weekly)
+    (fromDb "lexfridman.com/podcast" // rat)
     ## Astral Codex Ten
-    (mkPod "http://feeds.libsyn.com/108018/rss" // rat // daily)
+    (fromDb "sscpodcast.libsyn.com" // rat)
     ## Econ Talk
-    (mkPod "https://feeds.simplecast.com/wgl4xEgL" // rat // daily)
-    ## Cory Doctorow
-    (mkPod "https://feeds.feedburner.com/doctorow_podcast" // pol // infrequent)
+    (fromDb "feeds.simplecast.com/wgl4xEgL" // rat)
+    ## Cory Doctorow -- both podcast & text entries
+    (fromDb "craphound.com" // pol)
     (mkPod "https://congressionaldish.libsyn.com/rss" // pol // infrequent)
-    ## Civboot
-    (mkPod "https://anchor.fm/s/34c7232c/podcast/rss" // tech // infrequent)
-    (mkPod "https://feeds.feedburner.com/80000HoursPodcast" // rat // weekly)
-    (mkPod "https://allinchamathjason.libsyn.com/rss" // pol // weekly)
-    (mkPod "https://acquired.libsyn.com/rss" // tech // infrequent)
-    (mkPod "https://rss.acast.com/deconstructed" // pol // infrequent)
+    ## Civboot -- https://anchor.fm/civboot
+    (fromDb "anchor.fm/s/34c7232c/podcast/rss" // tech)
+    (fromDb "feeds.feedburner.com/80000HoursPodcast" // rat)
+    (fromDb "allinchamathjason.libsyn.com" // pol)
+    (fromDb "acquired.libsyn.com" // tech)
+    # The Intercept - Deconstructed; also available: <rss.acast.com/deconstructed>
+    (fromDb "rss.prod.firstlook.media/deconstructed/podcast.rss" // pol)
     ## The Daily
     (mkPod "https://feeds.simplecast.com/54nAGcIl" // pol // daily)
-    (mkPod "https://rss.acast.com/intercepted-with-jeremy-scahill" // pol // weekly)
-    (mkPod "https://podcast.posttv.com/itunes/post-reports.xml" // pol // weekly)
+    # The Intercept - Intercepted; also available: <https://rss.acast.com/intercepted-with-jeremy-scahill>
+    (fromDb "rss.prod.firstlook.media/intercepted/podcast.rss" // pol)
+    (fromDb "podcast.posttv.com/itunes/post-reports.xml" // pol)
     ## Eric Weinstein
-    (mkPod "https://rss.art19.com/the-portal" // rat // infrequent)
-    (mkPod "https://feeds.megaphone.fm/darknetdiaries" // tech // infrequent)
-    (mkPod "http://feeds.wnyc.org/radiolab" // pol // infrequent)
-    (mkPod "https://wakingup.libsyn.com/rss" // pol // infrequent)
-    ## 99% Invisible
-    (mkPod "https://feeds.simplecast.com/BqbsxVfO" // pol // infrequent)
-    (mkPod "https://rss.acast.com/ft-tech-tonic" // tech // infrequent)
-    (mkPod "https://feeds.feedburner.com/dancarlin/history?format=xml" // rat // infrequent)
-    ## 60 minutes (NB: this features more than *just* audio?)
-    (mkPod "https://www.cbsnews.com/latest/rss/60-minutes" // pol // infrequent)
+    (fromDb "rss.art19.com/the-portal" // rat)
+    (fromDb "darknetdiaries.com" // tech)
+    ## Radiolab -- also available here, but ONLY OVER HTTP: <http://feeds.wnyc.org/radiolab>
+    (fromDb "feeds.feedburner.com/radiolab" // pol)
+    ## Sam Harris
+    (fromDb "wakingup.libsyn.com" // pol)
+    ## 99% Invisible -- also available here: <https://feeds.simplecast.com/BqbsxVfO>
+    (fromDb "feeds.99percentinvisible.org/99percentinvisible" // pol)
+    (fromDb "rss.acast.com/ft-tech-tonic" // tech)
+    (fromDb "feeds.feedburner.com/dancarlin/history" // rat)
+    (fromDb "rss.art19.com/60-minutes" // pol)
     ## The Verge - Decoder
-    (mkPod "https://feeds.megaphone.fm/recodedecode" // tech // weekly)
+    (fromDb "feeds.megaphone.fm/recodedecode" // tech)
     ## Matrix (chat) Live
-    (mkPod "https://feed.podbean.com/matrixlive/feed.xml" // tech // weekly)
-    ## Michael Malice - Your Welcome
-    (mkPod "https://www.podcastone.com/podcast?categoryID2=2232" // pol // weekly)
+    (fromDb "feed.podbean.com/matrixlive/feed.xml" // tech)
+    ## Michael Malice - Your Welcome -- also available here: <https://origin.podcastone.com/podcast?categoryID2=2232>
+    (fromDb "rss.art19.com/your-welcome" // pol)
+    (fromDb "seattlenice.buzzsprout.com" // pol)
+    ## Sci-Fi? has Peter Watts; author of No Moods, Ads or Cutesy Fucking Icons (rifters.com)
+    (fromDb "talesfromthebridge.buzzsprout.com" // tech)
   ];
 
   texts = [
     # AGGREGATORS (> 1 post/day)
-    (mkText "https://www.lesswrong.com/feed.xml" // rat // hourly)
-    (mkText "http://www.econlib.org/index.xml" // pol // hourly)
+    (fromDb "lwn.net" // tech)
+    (fromDb "lesswrong.com" // rat)
+    (fromDb "econlib.org" // pol)
 
     # AGGREGATORS (< 1 post/day)
     (mkText "https://palladiummag.com/feed" // uncat // weekly)
@@ -85,10 +106,13 @@ in rec {
     (mkText "https://www.rifters.com/crawl/?feed=rss2" // uncat // weekly)
 
     # DEVELOPERS
-    (mkText "https://uninsane.org/atom.xml" // infrequent // tech)
-    (mkText "https://mg.lol/blog/rss/" // infrequent // tech)
+    (fromDb "uninsane.org" // tech)
+    (fromDb "mg.lol" // tech)
+    (fromDb "drewdevault.com" // tech)
     ## Ken Shirriff
-    (mkText "https://www.righto.com/feeds/posts/default" // tech // infrequent)
+    (fromDb "righto.com" // tech)
+    ## shared blog by a few NixOS devs, notably onny
+    (fromDb "project-insanity.org" // tech)
     ## Vitalik Buterin
     (mkText "https://vitalik.ca/feed.xml" // tech // infrequent)
     ## ian (Sanctuary)
@@ -104,7 +128,7 @@ in rec {
     (mkText "https://pomeroyb.com/feed.xml" // tech // infrequent)
 
     # (TECH; POL) COMMENTATORS
-    (mkSubstack "edwardsnowden" // pol // infrequent)
+    (fromDb "edwardsnowden.substack.com" // pol // text)
     (mkText "http://benjaminrosshoffman.com/feed" // pol // weekly)
     ## Ben Thompson
     (mkText "https://www.stratechery.com/rss" // pol // weekly)
@@ -149,46 +173,20 @@ in rec {
   images = [
     (mkImg "https://www.smbc-comics.com/comic/rss" // humor // daily)
     (mkImg "https://xkcd.com/atom.xml" // humor // daily)
-    (mkImg "http://dilbert.com/feed" // humor // daily)
+    (mkImg "https://pbfcomics.com/feed" // humor // infrequent)
+    # (mkImg "http://dilbert.com/feed" // humor // daily)
 
     # ART
     (mkImg "https://miniature-calendar.com/feed" // art // daily)
   ];
+in
+{
+  sane.feeds = texts ++ images ++ podcasts;
 
-  all = texts ++ images ++ podcasts;
-
-  # return only the feed items which match this category (e.g. "tech")
-  filterCat = cat: feeds: builtins.filter (item: item.cat == cat) feeds;
-  # return only the feed items which match this format (e.g. "podcast")
-  filterFormat = format: feeds: builtins.filter (item: item.format == format) feeds;
-
-  # transform a list of feeds into an attrs mapping cat => [ feed0 feed1 ... ]
-  partitionByCat = feeds: builtins.groupBy (f: f.cat) feeds;
-
-  # represents a single RSS feed.
-  opmlTerminal = feed: ''<outline xmlUrl="${feed.url}" type="rss"/>'';
-  # a list of RSS feeds.
-  opmlTerminals = feeds: lib.strings.concatStringsSep "\n" (builtins.map opmlTerminal feeds);
-  # one node which packages some flat grouping of terminals.
-  opmlGroup = title: feeds: ''
-    <outline text="${title}" title="${title}">
-      ${opmlTerminals feeds}
-    </outline>
-  '';
-  # a list of groups (`groupMap` is an attrs mapping groupName => [ feed0 feed1 ... ]).
-  opmlGroups = groupMap: lib.strings.concatStringsSep "\n" (
-    builtins.attrValues (builtins.mapAttrs opmlGroup groupMap)
-  );
-  # top-level OPML file which could be consumed by something else.
-  opmlTopLevel = body: ''
-    <?xml version="1.0" encoding="utf-8"?>
-    <opml version="2.0">
-      <body>
-        ${body}
-      </body>
-    </opml>
-  '';
-
-  # **primary API**: generate a OPML file from the provided feeds
-  feedsToOpml = feeds: opmlTopLevel (opmlGroups (partitionByCat feeds));
+  assertions = builtins.map
+    (p: {
+      assertion = p.format or "unknown" == "podcast";
+      message = ''${p.url} is not a podcast: ${p.format or "unknown"}'';
+    })
+    podcasts;
 }

hosts/common/ids.nix

@@ -0,0 +1,66 @@
+{ ... }:
+
+{
+  # legacy servo users, some are inconvenient to migrate
+  sane.ids.dhcpcd.gid = 991;
+  sane.ids.dhcpcd.uid = 992;
+  sane.ids.gitea.gid = 993;
+  sane.ids.git.uid = 994;
+  sane.ids.jellyfin.gid = 994;
+  sane.ids.pleroma.gid = 995;
+  sane.ids.jellyfin.uid = 996;
+  sane.ids.acme.gid = 996;
+  sane.ids.pleroma.uid = 997;
+  sane.ids.acme.uid = 998;
+
+  # greetd (used by sway)
+  sane.ids.greeter.uid = 999;
+  sane.ids.greeter.gid = 999;
+
+  # new servo users
+  sane.ids.freshrss.uid = 2401;
+  sane.ids.freshrss.gid = 2401;
+  sane.ids.mediawiki.uid = 2402;
+  sane.ids.signald.uid = 2403;
+  sane.ids.signald.gid = 2403;
+  sane.ids.mautrix-signal.uid = 2404;
+  sane.ids.mautrix-signal.gid = 2404;
+  sane.ids.navidrome.uid = 2405;
+  sane.ids.navidrome.gid = 2405;
+
+  sane.ids.colin.uid = 1000;
+  sane.ids.guest.uid = 1100;
+
+  # found on all hosts
+  sane.ids.sshd.uid = 2001;  # 997
+  sane.ids.sshd.gid = 2001;  # 997
+  sane.ids.polkituser.gid = 2002;  # 998
+  sane.ids.systemd-coredump.gid = 2003;  # 996
+  sane.ids.nscd.uid = 2004;
+  sane.ids.nscd.gid = 2004;
+  sane.ids.systemd-oom.uid = 2005;
+  sane.ids.systemd-oom.gid = 2005;
+
+  # found on graphical hosts
+  sane.ids.nm-iodine.uid = 2101;  # desko/moby/lappy
+
+  # found on desko host
+  # from services.usbmuxd
+  sane.ids.usbmux.uid = 2204;
+  sane.ids.usbmux.gid = 2204;
+
+
+  # originally found on moby host
+  # gnome core-shell
+  sane.ids.avahi.uid = 2304;
+  sane.ids.avahi.gid = 2304;
+  sane.ids.colord.uid = 2305;
+  sane.ids.colord.gid = 2305;
+  sane.ids.geoclue.uid = 2306;
+  sane.ids.geoclue.gid = 2306;
+  # gnome core-os-services
+  sane.ids.rtkit.uid = 2307;
+  sane.ids.rtkit.gid = 2307;
+  # phosh
+  sane.ids.feedbackd.gid = 2308;
+}

hosts/common/net.nix

@@ -1,16 +1,6 @@
 { config, lib, pkgs, ... }:
 
 {
-  # if using router's DNS, these mappings will already exist.
-  # if using a different DNS provider (which servo does), then we need to explicity provide them.
-  # ugly hack. would be better to get servo to somehow use the router's DNS
-  networking.hosts = {
-    "192.168.0.5" = [ "servo" ];
-    "192.168.0.20" = [ "lappy" ];
-    "192.168.0.22" = [ "desko" ];
-    "192.168.0.48" = [ "moby" ];
-  };
-
   # the default backend is "wpa_supplicant".
   # wpa_supplicant reliably picks weak APs to connect to.
   # see: <https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/474>
@@ -30,20 +20,4 @@
     General.RoamThreshold = "-52";  # default -70
     General.RoamThreshold5G = "-52";  # default -76
   };
-
-  # TODO: don't need to depend on binsh if we were to use a nix-style shebang
-  system.activationScripts.linkIwdKeys = let
-    unwrapped = ../../scripts/install-iwd;
-    install-iwd = pkgs.writeShellApplication {
-      name = "install-iwd";
-      runtimeInputs = with pkgs; [ coreutils gnused ];
-      text = ''${unwrapped} "$@"'';
-    };
-  in (lib.stringAfter
-    [ "setupSecrets" "binsh" ]
-    ''
-    mkdir -p /var/lib/iwd
-    ${install-iwd}/bin/install-iwd /run/secrets/iwd /var/lib/iwd
-    ''
-  );
 }

hosts/common/ssh.nix

@@ -1,10 +1,33 @@
-{ config, lib, ... }:
+{ config, lib, sane-data, sane-lib, ... }:
+
+let
+  inherit (builtins) head map mapAttrs tail;
+  inherit (lib) concatStringsSep mkMerge reverseList;
+in
 {
-  environment.etc."ssh/host_keys".source = "/nix/persist/etc/ssh/host_keys";
-
-  services.openssh.hostKeys = [
-    { type = "rsa"; bits = 4096; path = "/etc/ssh/host_keys/ssh_host_rsa_key"; }
-    { type = "ed25519"; path = "/etc/ssh/host_keys/ssh_host_ed25519_key"; }
-  ];
+  sane.ssh.pubkeys =
+  let
+    # path is a DNS-style path like [ "org" "uninsane" "root" ]
+    keyNameForPath = path:
+      let
+        rev = reverseList path;
+        name = head rev;
+        host = concatStringsSep "." (tail rev);
+      in
+      "${name}@${host}";
 
+    # [{ path :: [String], value :: String }] for the keys we want to install
+    globalKeys = sane-lib.flattenAttrs sane-data.keys;
+    domainKeys = sane-lib.flattenAttrs (
+      mapAttrs (host: cfg: {
+        colin = cfg.ssh.user_pubkey;
+        root = cfg.ssh.host_pubkey;
+      }) config.sane.hosts.by-name
+    );
+  in mkMerge (map
+    ({ path, value }: {
+      "${keyNameForPath path}" = lib.mkIf (value != null) value;
+    })
+    (globalKeys ++ domainKeys)
+  );
 }

hosts/common/users.nix

@@ -1,13 +1,10 @@
-{ config, pkgs, lib, ... }:
+{ config, pkgs, lib, sane-lib, ... }:
 
 # installer docs: https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/profiles/installation-device.nix
 with lib;
 let
   cfg = config.sane.users;
-  # see nixpkgs/nixos/modules/services/networking/dhcpcd.nix
-  hasDHCP = config.networking.dhcpcd.enable &&
-    (config.networking.useDHCP || any (i: i.useDHCP == true) (attrValues config.networking.interfaces));
-
+  fs = sane-lib.fs;
 in
 {
   options = {
@@ -28,8 +25,7 @@ in
       isNormalUser = true;
       home = "/home/colin";
       createHome = true;
-      homeMode = "700";
-      uid = config.sane.allocations.colin-uid;
+      homeMode = "0700";
       # i don't get exactly what this is, but nixos defaults to this non-deterministically
       # in /var/lib/nixos/auto-subuid-map and i don't want that.
       subUidRanges = [
@@ -52,53 +48,66 @@ in
       passwordFile = lib.mkIf (config.sops.secrets ? "colin-passwd") config.sops.secrets.colin-passwd.path;
 
       shell = pkgs.zsh;
-      openssh.authorizedKeys.keys = builtins.attrValues (import ../../modules/pubkeys.nix).users;
 
+      # mount encrypted stuff at login
       # some other nix pam users:
       # - <https://github.com/g00pix/nixconf/blob/32c04f6fa843fed97639dd3f09e157668d3eea1f/profiles/sshfs.nix>
       # - <https://github.com/lourkeur/distro/blob/11173454c6bb50f7ccab28cc2c757dca21446d1d/nixos/profiles/users/louis-full.nix>
       # - <https://github.com/dnr/sample-nix-code/blob/03494480c1fae550c033aa54fd96aeb3827761c5/nixos/laptop.nix>
-      pamMount = {
-        # mount encrypted stuff at login
-        # requires that login password == fs encryption password
-        fstype = "fuse";
-        path = "gocryptfs#/nix/persist/home/colin/private";
-        # path = "${pkgs.gocryptfs}/bin/gocryptfs#/nix/persist/home/colin/private";
-        # fstype = "fuse.gocryptfs";
-        # path = "/nix/persist/home/colin/private";
-        mountpoint = "/home/colin/private";
-        # without allow_other, *root* isn't allowed to list anything in ~/private.
-        # which is weird (root can just `su colin`), but probably doesn't *hurt* anything -- right?
-        options="nodev,nosuid,quiet";  # allow_other
+      pamMount = let
+        priv = config.fileSystems."/home/colin/private";
+      in {
+        fstype = priv.fsType;
+        path = priv.device;
+        mountpoint = priv.mountPoint;
+        options = builtins.concatStringsSep "," priv.options;
       };
     };
 
-    # required for PAM to find gocryptfs
-    security.pam.mount.additionalSearchPaths = [ pkgs.gocryptfs ];
     security.pam.mount.enable = true;
-    # security.pam.mount.debugLevel = 1;
-    # security.pam.enableSSHAgentAuth = true; # ??
-    # needed for `allow_other` in e.g. gocryptfs mounts
-    # or i guess going through mount.fuse sets suid so that's not necessary?
-    # programs.fuse.userAllowOther = true;
 
-    sane.impermanence.home-dirs = [
-      # cache is probably too big to fit on the tmpfs
-      # { directory = ".cache"; encryptedClearOnBoot = true; }
-      { directory = ".cache/mozilla"; encryptedClearOnBoot = true; }
+    # ensure ~ perms are known to sane.fs module.
+    # TODO: this is generic enough to be lifted up into sane.fs itself.
+    sane.fs."/home/colin".dir.acl = {
+      user = "colin";
+      group = config.users.users.colin.group;
+      mode = config.users.users.colin.homeMode;
+    };
+
+    sane.persist.home.plaintext = [
+      "archive"
+      "dev"
+      # TODO: records should be private
+      "records"
+      "ref"
+      "tmp"
+      "use"
+      "Music"
+      "Pictures"
+      "Videos"
+
+      ".cache/nix"
       ".cargo"
       ".rustup"
-      # TODO: move this to ~/private!
-      ".local/share/keyrings"
     ];
 
-    sane.impermanence.dirs = mkIf cfg.guest.enable [
-      { user = "guest"; group = "users"; directory = "/home/guest"; }
+    # convenience
+    sane.fs."/home/colin/knowledge" = fs.wantedSymlinkTo "/home/colin/private/knowledge";
+    sane.fs."/home/colin/nixos" = fs.wantedSymlinkTo "/home/colin/dev/nixos";
+    sane.fs."/home/colin/Videos/servo" = fs.wantedSymlinkTo "/mnt/servo-media/Videos";
+    sane.fs."/home/colin/Videos/servo-incomplete" = fs.wantedSymlinkTo "/mnt/servo-media/incomplete";
+    sane.fs."/home/colin/Music/servo" = fs.wantedSymlinkTo "/mnt/servo-media/Music";
+
+    # used by password managers, e.g. unix `pass`
+    sane.fs."/home/colin/.password-store" = fs.wantedSymlinkTo "/home/colin/knowledge/secrets/accounts";
+
+    sane.persist.sys.plaintext = mkIf cfg.guest.enable [
+      # intentionally allow other users to write to the guest folder
+      { directory = "/home/guest"; user = "guest"; group = "users"; mode = "0775"; }
     ];
     users.users.guest = mkIf cfg.guest.enable {
       isNormalUser = true;
       home = "/home/guest";
-      uid = config.sane.allocations.guest-uid;
       subUidRanges = [
         { startUid=200000; count=1; }
       ];
@@ -110,13 +119,6 @@ in
       ];
     };
 
-    users.users.dhcpcd = mkIf hasDHCP {
-      uid = config.sane.allocations.dhcpcd-uid;
-    };
-    users.groups.dhcpcd = mkIf hasDHCP {
-      gid = config.sane.allocations.dhcpcd-gid;
-    };
-
     security.sudo = {
       enable = true;
       wheelNeedsPassword = false;
@@ -124,34 +126,8 @@ in
 
     services.openssh = {
       enable = true;
-      permitRootLogin = "no";
-      passwordAuthentication = false;
+      settings.PermitRootLogin = "no";
+      settings.PasswordAuthentication = false;
     };
-
-    # affix some UIDs which were historically auto-generated
-    users.users.sshd.uid = config.sane.allocations.sshd-uid;
-    users.groups.polkituser.gid = config.sane.allocations.polkituser-gid;
-    users.groups.sshd.gid = config.sane.allocations.sshd-gid;
-    users.groups.systemd-coredump.gid = config.sane.allocations.systemd-coredump-gid;
-    users.users.nscd.uid = config.sane.allocations.nscd-uid;
-    users.groups.nscd.gid = config.sane.allocations.nscd-gid;
-    users.users.systemd-oom.uid = config.sane.allocations.systemd-oom-uid;
-    users.groups.systemd-oom.gid = config.sane.allocations.systemd-oom-gid;
-
-    # guarantee determinism in uid/gid generation for users:
-    assertions = let
-      uidAssertions = builtins.attrValues (builtins.mapAttrs (name: user: {
-        assertion = user.uid != null;
-        message = "non-deterministic uid detected for: ${name}";
-      }) config.users.users);
-      gidAssertions = builtins.attrValues (builtins.mapAttrs (name: group: {
-        assertion = group.gid != null;
-        message = "non-deterministic gid detected for: ${name}";
-      }) config.users.groups);
-      autoSubAssertions = builtins.attrValues (builtins.mapAttrs (name: user: {
-        assertion = !user.autoSubUidGidRange;
-        message = "non-deterministic subUids/Guids detected for: ${name}";
-      }) config.users.users);
-    in uidAssertions ++ gidAssertions ++ autoSubAssertions;
   };
 }

hosts/instantiate.nix

@@ -1,10 +1,27 @@
 # trampoline from flake.nix into the specific host definition, while doing a tiny bit of common setup
 
-hostName: { ... }: {
+# args from flake-level `import`
+{ hostName, localSystem }:
+
+# module args
+{ config, ... }:
+
+{
   imports = [
-    ./${hostName}
+    ./by-name/${hostName}
     ./common
+    ./modules
   ];
 
   networking.hostName = hostName;
+
+  nixpkgs.overlays = [
+    (next: prev: {
+      # for local != target we by default just emulate the target while building.
+      # provide a `pkgs.cross.<pkg>` alias that consumers can use instead of `pkgs.<foo>`
+      # to explicitly opt into non-emulated cross compilation for any specific package.
+      # this is most beneficial for large packages with few pre-requisites -- like Linux.
+      cross = next.crossFrom."${localSystem}";
+    })
+  ];
 }

hosts/modules/default.nix

@@ -0,0 +1,12 @@
+{ ... }:
+
+{
+  imports = [
+    ./derived-secrets.nix
+    ./hardware
+    ./hostnames.nix
+    ./hosts.nix
+    ./roles
+    ./wg-home.nix
+  ];
+}

hosts/modules/derived-secrets.nix

@@ -0,0 +1,47 @@
+{ config, lib, ... }:
+
+let
+  inherit (builtins) toString;
+  inherit (lib) mapAttrs mkOption types;
+  cfg = config.sane.derived-secrets;
+  secret = types.submodule {
+    options = {
+      len = mkOption {
+        type = types.int;
+      };
+      encoding = mkOption {
+        type = types.enum [ "base64" ];
+      };
+    };
+  };
+in
+{
+  options = {
+    sane.derived-secrets = mkOption {
+      type = types.attrsOf secret;
+      default = {};
+      description = ''
+        fs path => secret options.
+        for each entry, we create an item at the given path whose value is deterministic,
+        but also pseudo-random and not predictable by anyone without root access to the machine.
+        as PRNG source we use the host ssh key, and derived secrets are salted based on the destination path.
+      '';
+    };
+  };
+
+  config = {
+    sane.fs = mapAttrs (path: c: {
+      generated.script.script = ''
+        echo "$1" | cat /dev/stdin /etc/ssh/host_keys/ssh_host_ed25519_key \
+          | sha512sum \
+          | cut -c 1-${toString (c.len * 2)} \
+          | tr a-z A-Z \
+          | basenc -d --base16 \
+          | basenc --${c.encoding} \
+          > "$1"
+      '';
+      generated.script.scriptArgs = [ path ];
+      generated.acl.mode = "0600";
+    }) cfg;
+  };
+}

hosts/modules/hardware/default.nix

@@ -2,7 +2,6 @@
 
 {
   imports = [
-    ./all.nix
     ./x86_64.nix
   ];
 }

hosts/modules/hardware/x86_64.nix

@@ -1,8 +1,7 @@
 { lib, pkgs, ... }:
 
-with lib;
 {
-  config = mkIf (pkgs.system == "x86_64-linux") {
+  config = lib.mkIf (pkgs.system == "x86_64-linux") {
     boot.initrd.availableKernelModules = [
       "xhci_pci" "ahci" "sd_mod" "sdhci_pci"  # nixos-generate-config defaults
       "usb_storage"   # rpi needed this to boot from usb storage, i think.

hosts/modules/hostnames.nix

@@ -0,0 +1,11 @@
+{ config, lib, ... }:
+
+{
+  # if using router's DNS, these mappings will already exist.
+  # if using a different DNS provider (which servo does), then we need to explicity provide them.
+  # ugly hack. would be better to get servo to somehow use the router's DNS
+  networking.hosts = lib.mapAttrs' (host: cfg: {
+    name = cfg.lan-ip;
+    value = [ host ];
+  }) config.sane.hosts.by-name;
+}

hosts/modules/hosts.nix

@@ -0,0 +1,100 @@
+{ config, lib, ... }:
+
+let
+  inherit (lib) attrValues filterAttrs mkMerge mkOption types;
+  cfg = config.sane.hosts;
+
+  host = types.submodule ({ config, ... }: {
+    options = {
+      ssh.user_pubkey = mkOption {
+        type = types.str;
+        description = ''
+          ssh pubkey that the primary user of this machine will use when connecting to other machines.
+          e.g. "ssh-ed25519 AAAA<base64>".
+        '';
+      };
+      ssh.host_pubkey = mkOption {
+        type = types.str;
+        description = ''
+          ssh pubkey which this host will present to connections initiated against it.
+          e.g. "ssh-ed25519 AAAA<base64>".
+        '';
+      };
+      wg-home.pubkey = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = ''
+          wireguard public key for the wg-home VPN.
+          e.g. "pWtnKW7f7sNIZQ2M83uJ7cHg3IL1tebE3IoVkCgjkXM=".
+        '';
+      };
+      wg-home.ip = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = ''
+          IP address to use on the wg-home VPN.
+          e.g. "10.0.10.5";
+        '';
+      };
+      wg-home.endpoint = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+      };
+      lan-ip = mkOption {
+        type = types.str;
+        description = ''
+          ip address when on the lan.
+          e.g. "192.168.0.5";
+        '';
+      };
+    };
+  });
+in
+{
+  options = {
+    sane.hosts.by-name = mkOption {
+      type = types.attrsOf host;
+      default = {};
+      description = ''
+        map of hostname => attrset of information specific to that host,
+        like its ssh pubkey, etc.
+      '';
+    };
+  };
+
+  config = {
+    # TODO: this should be populated per-host
+    sane.hosts.by-name."desko" = {
+      ssh.user_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPU5GlsSfbaarMvDA20bxpSZGWviEzXGD8gtrIowc1pX";
+      ssh.host_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFw9NoRaYrM6LbDd3aFBc4yyBlxGQn8HjeHd/dZ3CfHk";
+      wg-home.pubkey = "17PMZssYi0D4t2d0vbmhjBKe1sGsE8kT8/dod0Q2CXc=";
+      wg-home.ip = "10.0.10.22";
+      lan-ip = "192.168.0.22";
+    };
+
+    sane.hosts.by-name."lappy" = {
+      ssh.user_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDpmFdNSVPRol5hkbbCivRhyeENzb9HVyf9KutGLP2Zu";
+      ssh.host_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAILSJnqmVl9/SYQ0btvGb0REwwWY8wkdkGXQZfn/1geEc";
+      wg-home.pubkey = "FTUWGw2p4/cEcrrIE86PWVnqctbv8OYpw8Gt3+dC/lk=";
+      wg-home.ip = "10.0.10.20";
+      lan-ip = "192.168.0.20";
+    };
+
+    sane.hosts.by-name."moby" = {
+      ssh.user_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICrR+gePnl0nV/vy7I5BzrGeyVL+9eOuXHU1yNE3uCwU";
+      ssh.host_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIO1N/IT3nQYUD+dBlU1sTEEVMxfOyMkrrDeyHcYgnJvw";
+      wg-home.pubkey = "I7XIR1hm8bIzAtcAvbhWOwIAabGkuEvbWH/3kyIB1yA=";
+      wg-home.ip = "10.0.10.48";
+      lan-ip = "192.168.0.48";
+    };
+
+    sane.hosts.by-name."servo" = {
+      ssh.user_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPS1qFzKurAdB9blkWomq8gI1g0T3sTs9LsmFOj5VtqX";
+      ssh.host_pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOfdSmFkrVT6DhpgvFeQKm3Fh9VKZ9DbLYOPOJWYQ0E8";
+      wg-home.pubkey = "roAw+IUFVtdpCcqa4khB385Qcv9l5JAB//730tyK4Wk=";
+      wg-home.ip = "10.0.10.5";
+      wg-home.endpoint = "uninsane.org:51820";
+      lan-ip = "192.168.0.5";
+    };
+  };
+}

hosts/modules/roles/client/bluetooth-pairings.nix

@@ -0,0 +1,18 @@
+{ config, lib, pkgs, ... }:
+
+{
+  config = lib.mkIf config.sane.roles.client {
+    # persist external pairings by default
+    sane.persist.sys.plaintext = [ "/var/lib/bluetooth" ];
+
+    sane.fs."/var/lib/bluetooth".generated.acl.mode = "0700";
+    sane.fs."/var/lib/bluetooth/.secrets.stamp" = {
+      wantedBeforeBy = [ "bluetooth.service" ];
+      # XXX: install-bluetooth uses sed, but that's part of the default systemd unit path, it seems
+      generated.script.script = builtins.readFile ../../../../scripts/install-bluetooth + ''
+        touch "/var/lib/bluetooth/.secrets.stamp"
+      '';
+      generated.script.scriptArgs = [ "/run/secrets/bt" ];
+    };
+  };
+}

hosts/modules/roles/client/default.nix

@@ -0,0 +1,17 @@
+{ config, lib, ... }:
+
+let
+  inherit (lib) mkIf mkOption types;
+in
+{
+  imports = [
+    ./bluetooth-pairings.nix
+    ./wifi-pairings.nix
+  ];
+
+  # option is consumed by the other imports in this dir
+  options.sane.roles.client = mkOption {
+    type = types.bool;
+    default = false;
+  };
+}

hosts/modules/roles/client/wifi-pairings.nix

@@ -0,0 +1,15 @@
+{ config, lib, pkgs, ... }:
+
+{
+  config = lib.mkIf config.sane.roles.client {
+    sane.fs."/var/lib/iwd/.secrets.psk.stamp" = {
+      wantedBeforeBy = [ "iwd.service" ];
+      generated.acl.mode = "0600";
+      # XXX: install-iwd uses sed, but that's part of the default systemd unit path, it seems
+      generated.script.script = builtins.readFile ../../../../scripts/install-iwd + ''
+        touch "/var/lib/iwd/.secrets.psk.stamp"
+      '';
+      generated.script.scriptArgs = [ "/run/secrets/iwd" "/var/lib/iwd" ];
+    };
+  };
+}

hosts/modules/roles/default.nix

@@ -0,0 +1,6 @@
+{ ... }:
+{
+  imports = [
+    ./client
+  ];
+}

hosts/modules/wg-home.nix

@@ -0,0 +1,80 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (builtins) filter map;
+  inherit (lib) concatMap mapAttrsToList mkIf mkMerge mkOption optionalAttrs types;
+  cfg = config.sane.services.wg-home;
+  server-cfg = config.sane.hosts.by-name."servo".wg-home;
+  mkPeer = { ips, pubkey, endpoint }: {
+    publicKey = pubkey;
+    allowedIPs = map (k: "${k}/32") ips;
+  } // (optionalAttrs (endpoint != null) {
+    inherit endpoint;
+    # send keepalives every 25 seconds to keep NAT routes live.
+    # only need to do this from client -> server though, i think.
+    persistentKeepalive = 25;
+    # allows wireguard to notice DNS/hostname changes, with this much effective TTL.
+    dynamicEndpointRefreshSeconds = 600;
+  });
+  # make separate peers to route each given host
+  mkClientPeers = hosts: map (p: mkPeer {
+    inherit (p) pubkey endpoint;
+    ips = [ p.ip ];
+  }) hosts;
+  # make a single peer which routes all the given hosts
+  mkServerPeer = hosts: mkPeer {
+    inherit (server-cfg) pubkey endpoint;
+    ips = map (h: h.ip) hosts;
+  };
+in
+{
+  options = {
+    sane.services.wg-home.enable = mkOption {
+      type = types.bool;
+      default = false;
+    };
+    sane.services.wg-home.ip = mkOption {
+      type = types.str;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    # generate a (deterministic) wireguard private key
+    sane.derived-secrets."/run/wg-home.priv" = {
+      len = 32;
+      encoding = "base64";
+    };
+
+    # wireguard VPN which allows everything on my domain to speak to each other even when
+    # not behind a shared LAN.
+    # this config defines both the endpoint (server) and client configs
+
+    # for convenience, have both the server and client use the same port for their wireguard connections.
+    networking.firewall.allowedUDPPorts = [ 51820 ];
+    networking.wireguard.interfaces.wg-home = {
+      listenPort = 51820;
+      privateKeyFile = "/run/wg-home.priv";
+      preSetup =
+        let
+          gen-key = config.sane.fs."/run/wg-home.priv".unit;
+        in
+          "${pkgs.systemd}/bin/systemctl start '${gen-key}'";
+
+      ips = [
+        "${cfg.ip}/24"
+      ];
+
+      peers =
+        let
+          all-peers = mapAttrsToList (_: hostcfg: hostcfg.wg-home) config.sane.hosts.by-name;
+          peer-list = filter (p: p.ip != null && p.ip != cfg.ip && p.pubkey != null) all-peers;
+        in
+          if cfg.ip == server-cfg.ip then
+            # if we're the server, then we maintain the entire client list
+            mkClientPeers peer-list
+          else
+            # but if we're a client, we maintain a single peer -- the server -- which does the actual routing
+            [ (mkServerPeer peer-list) ];
+    };
+  };
+}

hosts/servo/users.nix

@@ -1,25 +0,0 @@
-{ config, ... }:
-
-# installer docs: https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/profiles/installation-device.nix
-{
-  # automatically log in at the virtual consoles.
-  # using root here makes sure we always have an escape hatch
-  services.getty.autologinUser = "root";
-
-  # gitea doesn't create the git user
-  users.users.git = {
-    description = "Gitea Service";
-    home = "/var/lib/gitea";
-    useDefaultShell = true;
-    group = "gitea";
-    uid = config.sane.allocations.git-uid;
-    isSystemUser = true;
-    # sendmail access (not 100% sure if this is necessary)
-    extraGroups = [ "postdrop" ];
-  };
-
-  # this is required to allow pleroma to send email.
-  # raw `sendmail` works, but i think pleroma's passing it some funny flags or something, idk.
-  # hack to fix that.
-  users.users.pleroma.extraGroups = [ "postdrop" ];
-}

modules/allocations.nix

@@ -1,63 +0,0 @@
-{ lib, ... }:
-
-with lib;
-let
-  mkId = id: mkOption {
-    default = id;
-    type = types.int;
-  };
-in
-{
-  options = {
-    # legacy servo users, some are inconvenient to migrate
-    sane.allocations.dhcpcd-gid = mkId 991;
-    sane.allocations.dhcpcd-uid = mkId 992;
-    sane.allocations.gitea-gid = mkId 993;
-    sane.allocations.git-uid = mkId 994;
-    sane.allocations.jellyfin-gid = mkId 994;
-    sane.allocations.pleroma-gid = mkId 995;
-    sane.allocations.jellyfin-uid = mkId 996;
-    sane.allocations.acme-gid = mkId 996;
-    sane.allocations.pleroma-uid = mkId 997;
-    sane.allocations.acme-uid = mkId 998;
-    sane.allocations.greeter-uid = mkId 999;
-    sane.allocations.greeter-gid = mkId 999;
-
-    # new servo users
-    sane.allocations.freshrss-uid = mkId 2401;
-    sane.allocations.freshrss-gid = mkId 2401;
-    sane.allocations.mediawiki-uid = mkId 2402;
-
-    sane.allocations.colin-uid = mkId 1000;
-    sane.allocations.guest-uid = mkId 1100;
-
-    # found on all hosts
-    sane.allocations.sshd-uid = mkId 2001;  # 997
-    sane.allocations.sshd-gid = mkId 2001;  # 997
-    sane.allocations.polkituser-gid = mkId 2002;  # 998
-    sane.allocations.systemd-coredump-gid = mkId 2003;  # 996
-    sane.allocations.nscd-uid = mkId 2004;
-    sane.allocations.nscd-gid = mkId 2004;
-    sane.allocations.systemd-oom-uid = mkId 2005;
-    sane.allocations.systemd-oom-gid = mkId 2005;
-
-    # found on graphical hosts
-    sane.allocations.nm-iodine-uid = mkId 2101;  # desko/moby/lappy
-
-    # found on desko host
-    sane.allocations.usbmux-uid = mkId 2204;
-    sane.allocations.usbmux-gid = mkId 2204;
-
-
-    # originally found on moby host
-    sane.allocations.avahi-uid = mkId 2304;
-    sane.allocations.avahi-gid = mkId 2304;
-    sane.allocations.colord-uid = mkId 2305;
-    sane.allocations.colord-gid = mkId 2305;
-    sane.allocations.geoclue-uid = mkId 2306;
-    sane.allocations.geoclue-gid = mkId 2306;
-    sane.allocations.rtkit-uid = mkId 2307;
-    sane.allocations.rtkit-gid = mkId 2307;
-    sane.allocations.feedbackd-gid = mkId 2308;
-  };
-}

modules/data/default.nix

@@ -0,0 +1,12 @@
+# this directory contains data of a factual nature.
+# for example, public ssh keys, GPG keys, DNS-type name mappings.
+#
+# don't put things like fully-specific ~/.config files in here,
+# even if they're "relatively unopinionated".
+
+moduleArgs:
+
+{
+  feeds = import ./feeds moduleArgs;
+  keys = import ./keys.nix;
+}

modules/data/feeds/default.nix

@@ -0,0 +1,51 @@
+{ lib, ... }:
+
+let
+  inherit (builtins) concatLists concatStringsSep foldl' fromJSON map readDir readFile;
+  inherit (lib) hasSuffix listToAttrs mapAttrsToList removeSuffix splitString;
+
+  # given a path to a .json file relative to sources, construct the best feed object we can.
+  # the .json file could be empty, in which case we make assumptions about the feed based
+  # on its fs path.
+  # Type: feedFromSourcePath :: String -> { name = String; value = feed; }
+  feedFromSourcePath = json-path:
+    assert hasSuffix "/default.json" json-path;
+    let
+      canonical-name = removeSuffix "/default.json" json-path;
+      default-url = "https://${canonical-name}";
+      feed-details = { url = default-url; } // (tryImportJson (./sources/${json-path}));
+    in { name = canonical-name; value = mkFeed feed-details; };
+
+  # TODO: for now, feeds are just ordinary Attrs.
+  # in the future, we'd like to set them up with an update script.
+  mkFeed = { url, ... }@details: details;
+
+  # return an AttrSet representing the json at the provided path,
+  # or {} if the path is empty.
+  tryImportJson = path:
+    let
+      as-str = readFile path;
+    in
+      if as-str == "" then
+        {}
+      else
+        fromJSON as-str;
+
+  sources = enumerateFilePaths ./sources;
+
+  # like `lib.listFilesRecursive` but does not mangle paths.
+  # Type: enumerateFilePaths :: path -> [String]
+  enumerateFilePaths = base:
+    concatLists (
+      mapAttrsToList
+        (name: type:
+          if type == "directory" then
+            # enumerate this directory and then prefix each result with the directory's name
+            map (e: "${name}/${e}") (enumerateFilePaths (base + "/${name}"))
+          else
+            [ name ]
+        )
+        (readDir base)
+    );
+in
+  listToAttrs (map feedFromSourcePath sources)

modules/data/feeds/sources/acquired.libsyn.com/default.json

@@ -0,0 +1,21 @@
+{
+  "bozo": 0,
+  "content_length": 1369733,
+  "content_type": "application/rss+xml; charset=utf-8",
+  "description": "Every company has a story. Learn the playbooks that built the world’s greatest companies — and how you can apply them as a founder, operator, or investor.",
+  "favicon": null,
+  "hubs": [],
+  "is_podcast": true,
+  "is_push": false,
+  "item_count": 173,
+  "last_seen": "2023-01-11T15:26:37.515527+00:00",
+  "last_updated": "2022-12-19T07:22:28+00:00",
+  "score": 18,
+  "self_url": "https://acquired.libsyn.com/rss",
+  "site_name": null,
+  "site_url": null,
+  "title": "Acquired",
+  "url": "https://acquired.libsyn.com/rss",
+  "velocity": 0.066,
+  "version": "rss20"
+}

modules/data/feeds/sources/allinchamathjason.libsyn.com/default.json

@@ -0,0 +1,21 @@
+{
+  "bozo": 0,
+  "content_length": 1030773,
+  "content_type": "application/rss+xml; charset=utf-8",
+  "description": "Industry veterans, degenerate gamblers & besties Chamath Palihapitiya, Jason Calacanis, David Sacks & David Friedberg cover all things economic, tech, political, social & poker.",
+  "favicon": null,
+  "hubs": [],
+  "is_podcast": true,
+  "is_push": false,
+  "item_count": 124,
+  "last_seen": "2023-01-11T12:44:53.606606+00:00",
+  "last_updated": "2023-01-06T10:51:00+00:00",
+  "score": 18,
+  "self_url": "https://allinchamathjason.libsyn.com/rss",
+  "site_name": "All-In with Chamath, Jason, Sacks & Friedberg",
+  "site_url": "https://allinchamathjason.libsyn.com",
+  "title": "All-In with Chamath, Jason, Sacks & Friedberg",
+  "url": "https://allinchamathjason.libsyn.com/rss",
+  "velocity": 0.12,
+  "version": "rss20"
+}

modules/data/feeds/sources/anchor.fm/s/34c7232c/podcast/rss/default.json

@@ -0,0 +1,23 @@
+{
+  "bozo": 0,
+  "content_length": 13316,
+  "content_type": "application/rss+xml; charset=utf-8",
+  "description": "A podcast around the idea of creating a Civilizational Bootstrapper, a set of tools and technology that can be used to replicate the foundations of civilization along with itself.",
+  "favicon": null,
+  "hubs": [
+    "https://pubsubhubbub.appspot.com/"
+  ],
+  "is_podcast": true,
+  "is_push": true,
+  "item_count": 6,
+  "last_seen": "2023-01-11T16:11:01.720399+00:00",
+  "last_updated": "2022-04-13T19:37:17+00:00",
+  "score": 22,
+  "self_url": "https://anchor.fm/s/34c7232c/podcast/rss",
+  "site_name": "Anchor",
+  "site_url": "https://anchor.fm",
+  "title": "Civboot",
+  "url": "https://anchor.fm/s/34c7232c/podcast/rss",
+  "velocity": 0.009,
+  "version": "rss20"
+}

modules/data/feeds/sources/benjaminrosshoffman.com/default.json

@@ -0,0 +1,21 @@
+{
+  "bozo": 0,
+  "content_length": 12669,
+  "content_type": "application/rss+xml; charset=utf-8",
+  "description": "The territory is a map of the map.",
+  "favicon": "http://benjaminrosshoffman.com/favicon.ico",
+  "hubs": [],
+  "is_podcast": false,
+  "is_push": false,
+  "item_count": 10,
+  "last_seen": "2023-01-11T12:32:52.176940+00:00",
+  "last_updated": "2023-01-09T04:33:31+00:00",
+  "score": -15,
+  "self_url": "http://benjaminrosshoffman.com/comments/feed/",
+  "site_name": "Compass Rose",
+  "site_url": "http://benjaminrosshoffman.com",
+  "title": "Comments for Compass Rose",
+  "url": "http://benjaminrosshoffman.com/comments/feed/",
+  "velocity": 0.312,
+  "version": "rss20"
+}

modules/data/feeds/sources/craphound.com/default.json

@@ -0,0 +1,21 @@
+{
+  "bozo": 0,
+  "content_length": 56666,
+  "content_type": "application/rss+xml; charset=utf-8",
+  "description": "Cory Doctorow's Literary Works",
+  "favicon": "https://craphound.com/favicon.ico",
+  "hubs": [],
+  "is_podcast": true,
+  "is_push": false,
+  "item_count": 20,
+  "last_seen": "2023-01-11T12:55:10.545856+00:00",
+  "last_updated": "2022-12-12T14:46:35+00:00",
+  "score": 12,
+  "self_url": "https://craphound.com/feed/",
+  "site_name": "Cory Doctorow's craphound.com | Cory Doctorow's Literary Works",
+  "site_url": "https://craphound.com",
+  "title": "Cory Doctorow's craphound.com",
+  "url": "https://craphound.com/feed/",
+  "velocity": 0.069,
+  "version": "rss20"
+}

modules/data/feeds/sources/darknetdiaries.com/default.json

@@ -0,0 +1,21 @@
+{
+  "bozo": 0,
+  "content_length": 227480,
+  "content_type": "application/xml; charset=utf-8",
+  "description": "True stories from the dark side of the Internet",
+  "favicon": "https://darknetdiaries.com/imgs/favicon.png",
+  "hubs": [],
+  "is_podcast": true,
+  "is_push": false,
+  "item_count": 131,
+  "last_seen": "2023-01-11T14:49:53.136566+00:00",
+  "last_updated": "2022-12-27T08:00:00+00:00",
+  "score": 20,
+  "self_url": "https://darknetdiaries.com/feedfree.xml",
+  "site_name": "Darknet Diaries – True stories from the dark side of the Internet.",
+  "site_url": "https://darknetdiaries.com",
+  "title": "Darknet Diaries (ad free)",
+  "url": "https://darknetdiaries.com/feedfree.xml",
+  "velocity": 0.067,
+  "version": "rss20"
+}

modules/data/feeds/sources/econlib.org/default.json

@@ -0,0 +1,21 @@
+{
+  "bozo": 0,
+  "content_length": 66775,
+  "content_type": "application/rss+xml; charset=utf-8",
+  "description": "The Library of Economics and Liberty",
+  "favicon": null,
+  "hubs": [],
+  "is_podcast": false,
+  "is_push": false,
+  "item_count": 10,
+  "last_seen": "2023-01-11T10:46:38.526754+00:00",
+  "last_updated": "2023-01-10T05:21:31+00:00",
+  "score": 14,
+  "self_url": "https://www.econlib.org/feed/",
+  "site_name": "Econlib",
+  "site_url": "https://www.econlib.org",
+  "title": "Econlib",
+  "url": "https://www.econlib.org/feed/",
+  "velocity": 2.549,
+  "version": "rss20"
+}

modules/data/feeds/sources/econtalk.org/default.json

@@ -0,0 +1,21 @@
+{
+  "bozo": 0,
+  "content_length": 27185,
+  "content_type": "application/rss+xml; charset=utf-8",
+  "description": "The Library of Economics and Liberty",
+  "favicon": null,
+  "hubs": [],
+  "is_podcast": false,
+  "is_push": false,
+  "item_count": 10,
+  "last_seen": "2023-01-11T13:05:47.318206+00:00",
+  "last_updated": "2023-01-09T11:30:25+00:00",
+  "score": 14,
+  "self_url": "https://www.econtalk.org/feed/",
+  "site_name": null,
+  "site_url": null,
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