lappy-gpt: inline nixos-generate logic for better boot consistency

this image boots!

flake.lock

@@ -56,42 +56,6 @@
         "type": "github"
       }
     },
-    "nixlib": {
-      "locked": {
-        "lastModified": 1636849918,
-        "narHash": "sha256-nzUK6dPcTmNVrgTAC1EOybSMsrcx+QrVPyqRdyKLkjA=",
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "rev": "28a5b0557f14124608db68d3ee1f77e9329e9dd5",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "type": "github"
-      }
-    },
-    "nixos-generators": {
-      "inputs": {
-        "nixlib": "nixlib",
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1652457860,
-        "narHash": "sha256-fZZRON0geucxAFCEamzuZ5z4oj7xJj+6C9HWm1JY2n0=",
-        "owner": "nix-community",
-        "repo": "nixos-generators",
-        "rev": "11f97f971383d036159edd9221f1b3a60ed78c4f",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "nixos-generators",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1629048390,
@@ -156,7 +120,6 @@
       "inputs": {
         "home-manager": "home-manager",
         "mobile-nixos": "mobile-nixos",
-        "nixos-generators": "nixos-generators",
         "nixpkgs": "nixpkgs_2",
         "pkgs-gitea": "pkgs-gitea",
         "pkgs-mobile": "pkgs-mobile"

flake.nix

@@ -22,13 +22,9 @@
       url = "github:nix-community/home-manager/release-21.11";
       inputs.nixpkgs.follows = "nixpkgs";
     };
-    nixos-generators = {
-      url = "github:nix-community/nixos-generators";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
   };
 
-  outputs = { self, nixpkgs, pkgs-gitea, pkgs-mobile, mobile-nixos, home-manager, nixos-generators }: {
+  outputs = { self, nixpkgs, pkgs-gitea, pkgs-mobile, mobile-nixos, home-manager }: {
     nixosConfigurations.uninsane = self.decl-machine {
       system = "aarch64-linux";
       extraModules = [ ./uninsane ];
@@ -39,45 +35,19 @@
       extraModules = [ ./lappy ];
     };
 
-    nixosConfigurations.lappy-iso = self.decl-machine {
-      system = "x86_64-linux";
-      extraModules = [
-        ./lappy
-        "${nixpkgs}/nixos/modules/installer/cd-dvd/iso-image.nix"
-        ({ pkgs, ...}: {
-          isoImage.isoName = "lappy-iso";
-          isoImage.makeEfiBootable = true;
-          isoImage.makeUsbBootable = true;
-          isoImage.edition = "minimal";
-          isoImage.squashfsCompression = "gzip";
-        })
-      ];
-    };
-
-    nixosConfigurations.lappy-sd = self.decl-machine {
-      system = "x86_64-linux";
-      extraModules = [
-        ./lappy
-        "${nixpkgs}/nixos/modules/installer/sd-card/sd-image.nix"
-        ({ pkgs, ...}: {
-          sdImage.imageName = "lappy-sd";
-          sdImage.compressImage = false;
-          sdImage.populateRootCommands = "";
-          sdImage.populateFirmwareCommands = "";
-        })
-      ];
-    };
-
-    packages.x86_64-linux.lappy-gpt = (nixos-generators.nixosGenerate {
-      pkgs = self.genpkgs.x86_64-linux.pkgs;
-      specialArgs = { home-manager = home-manager; };
-      modules = [
-        ./configuration.nix
-        ./lappy
-        ./modules
-      ];
-      format = "raw-efi";
-    }).content;
+    packages.x86_64-linux.lappy-gpt = let
+      image = nixpkgs.lib.nixosSystem {
+        pkgs = self.genpkgs.x86_64-linux.pkgs;
+        system = "x86_64-linux";
+        specialArgs = { home-manager = home-manager; };
+        modules = [
+          ./configuration.nix
+          ./lappy
+          ./modules
+          ./image.nix
+        ];
+      };
+      in image.config.system.build.raw;
 
     nixosConfigurations.pda = pkgs-mobile.lib.nixosSystem {
       # inherit (self.genpkgs.aarch64-linux) pkgs;

image.nix

@@ -0,0 +1,20 @@
+{ config, lib, pkgs, modulesPath, ... }:
+{
+  fileSystems."/" = {
+    # boot by label instead of unpredictable uuid
+    device = "/dev/disk/by-label/nixos";
+    # make-disk-image only supports ext4
+    fsType = "ext4";
+  };
+  # fileSystems."/boot".device = "/dev/vda1";
+  fileSystems."/boot".device = "/dev/disk/by-label/ESP";
+
+  system.build.raw = import "${toString modulesPath}/../lib/make-disk-image.nix" {
+    inherit lib config pkgs;
+    partitionTableType = "efi";
+    fsType = config.fileSystems."/".fsType;
+    diskSize = "auto";
+    format = "raw";
+  };
+}
+

lappy/hardware.nix

@@ -6,6 +6,8 @@
   # find more of these with sensors-detect
   boot.kernelModules = [ "coretemp" "kvm-intel" ];
   boot.extraModulePackages = [ ];
+  boot.kernelParams = [ "boot.shell_on_fail" ];
+  boot.consoleLogLevel = 7;
 
   # Use the systemd-boot EFI boot loader.
   boot.loader.systemd-boot.enable = true;
@@ -27,21 +29,17 @@
     pkgs.vaapiIntel
   ];
 
-  # funky defaulting/forcing here because:
-  # - we want to support image generation, where fs is defined by label instead of UUID
-  # - we want images to have btrfs roots, not ext4 default
-  fileSystems."/" = {
-    device = lib.mkDefault "/dev/disk/by-uuid/75230e56-2c69-4e41-b03e-68475f119980";
-    fsType = lib.mkForce "btrfs";
-    options = lib.mkDefault [
+  fileSystems."/" = lib.mkDefault {
+    device = "/dev/disk/by-uuid/75230e56-2c69-4e41-b03e-68475f119980";
+    fsType = "btrfs";
+    options = [
       "compress=zstd"
       "defaults"
     ];
-    autoResize = lib.mkForce false;
   };
 
-  fileSystems."/boot" = lib.mkDefault {
-    device = "/dev/disk/by-uuid/BD79-D6BB";
+  fileSystems."/boot" = {
+    device = lib.mkDefault "/dev/disk/by-uuid/BD79-D6BB";
     fsType = "vfat";
   };