rebuild desko and flash it

haven't booted into it yet (we'll see!)

machines/desko/default.nix

@@ -9,6 +9,11 @@
   ];
   colinsane.gui.sway.enable = true;
   colinsane.services.duplicity.enable = true;
+  colinsane.impermanence.enable = true;
+
+  boot.loader.generic-extlinux-compatible.enable = true;
+  boot.loader.efi.canTouchEfiVariables = false;
+  colinsane.image.extraBootFiles = [ pkgs.bootpart-uefi-x86_64 ];
 
   # needed to use libimobiledevice/ifuse, for iphone sync
   services.usbmuxd.enable = true;
@@ -17,10 +22,6 @@
     sopsFile = ../../secrets/desko.yaml;
   };
 
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.systemd-boot.configurationLimit = 40;  # keep this many generations
-  boot.loader.efi.canTouchEfiVariables = true;
-
   # docs: https://nixos.org/manual/nixos/stable/options.html#opt-system.stateVersion
   system.stateVersion = "21.05";
 }

machines/desko/fs.nix

@@ -1,8 +1,28 @@
 { ... }:
 
 {
+  # root is a tmpfs so that we have an ephemeral system ("impermanence" handles the state)
   fileSystems."/" = {
-    device = "/dev/disk/by-uuid/985a0a32-da52-4043-9df7-615adec2e4ff";
+    device = "none";
+    fsType = "tmpfs";
+    options = [
+      "mode=755"
+      "size=1G"
+      "defaults"
+    ];
+  };
+  # we need a /tmp of default size (half RAM) for building large nix things
+  fileSystems."/tmp" = {
+    device = "none";
+    fsType = "tmpfs";
+    options = [
+      "mode=777"
+      "defaults"
+    ];
+  };
+  fileSystems."/nix" = {
+    # device = "/dev/disk/by-uuid/985a0a32-da52-4043-9df7-615adec2e4ff";
+    device = "/dev/disk/by-uuid/0ab0770b-7734-4167-88d9-6e4e20bb2a56";
     fsType = "btrfs";
     options = [
       "compress=zstd"
@@ -11,7 +31,8 @@
   };
 
   fileSystems."/boot" = {
-    device = "/dev/disk/by-uuid/CAA7-E7D2";
+    # device = "/dev/disk/by-uuid/CAA7-E7D2";
+    device = "/dev/disk/by-uuid/41B6-BAEF";
     fsType = "vfat";
   };
 }

machines/lappy/fs.nix

@@ -1,6 +1,7 @@
 { ... }:
 
 {
+  # root is a tmpfs so that we have an ephemeral system ("impermanence" handles the state)
   fileSystems."/" = {
     device = "none";
     fsType = "tmpfs";

modules/image.nix

@@ -14,6 +14,10 @@ in
       default = 0;
       type = types.int;
     };
+    colinsane.image.bootPartSize = mkOption {
+      default = 512 * 1024 * 1024;
+      type = types.int;
+    };
   };
   config = let
     # return true if super starts with sub
@@ -65,7 +69,7 @@ in
           # partition properties
           partitionLabel = "EFI System";
           partitionUUID = "44444444-4444-4444-4444-4444${vfatUuidFromFs bootFs}";
-          size = imageBuilder.size.MiB 256;
+          size = cfg.bootPartSize;
 
           populateCommands = let
             extras = builtins.toString (builtins.map (d: "cp -R ${d}/* ./") cfg.extraBootFiles);