flake: refactor packages to fit expectations

.github/workflows/CI.yml

@@ -23,14 +23,14 @@ jobs:
     - name: Maximize build space
       uses: AdityaGarg8/remove-unwanted-software@master
       with:
-       remove-android: 'true'
-       remove-dotnet: 'true'
-       remove-haskell: 'true'
-       remove-codeql: 'true'
-       remove-docker-images: 'true'
-       remove-large-packages: 'true'
-       remove-cached-tools: 'true'
-       remove-swapfile: 'true'
+        remove-android: 'true'
+        remove-dotnet: 'true'
+        remove-haskell: 'true'
+        remove-codeql: 'true'
+        remove-docker-images: 'true'
+        remove-large-packages: 'true'
+        remove-cached-tools: 'true'
+        remove-swapfile: 'true'
     - name: Checkout
       uses: actions/checkout@v4
     - name: "Install Nix"
@@ -47,8 +47,8 @@ jobs:
       env:
         GC_DONT_GC: 1
       run: |
-        for output in $(nix flake show --json | nix run nixpkgs#jq -- -r 'keys[]'); do
-          nix build .#$output --accept-flake-config
+        for output in $(nix flake show --json | nix run nixpkgs#jq -- -r '.packages."x86_64-linux" | keys[]'); do
+          nix build .#packages.x86_64-linux.${output} --accept-flake-config
           if [ $(du -B1M result/iso/*.iso | cut -f1) -gt 2000 ]; then
             split -d result/iso/*.iso -b 2000M nixos-$output.iso.part-
           else

flake.nix

@@ -12,22 +12,29 @@
     extra-trusted-public-keys = [ "cache.soopy.moe-1:0RZVsQeR+GOh0VQI9rvnHz55nVXkFardDqfm4+afjPo=" ];
   };
 
-  outputs = { self, nixpkgs, nixos-hardware }:
-  let
-    system = "x86_64-linux";
-    inherit (nixpkgs) lib;
+  outputs =
+    {
+      self,
+      nixpkgs,
+      nixos-hardware,
+    }:
+    let
+      inherit (nixpkgs) lib;
 
-    mergeMap = fn: list: lib.lists.foldr (a: b: a // b) {} (map fn list);
-  in
-  mergeMap (config: {
-    ${lib.strings.removeSuffix ".nix" (builtins.baseNameOf config)} = (lib.nixosSystem {
-      inherit system;
-
-      modules = [ config ];
-
-      specialArgs = {
-        inherit nixos-hardware;
-      };
-    }).config.system.build.isoImage; 
-  }) (builtins.filter (x: x != null) (lib.attrsets.mapAttrsToList (key: value: if value == "regular" && lib.strings.hasInfix "iso" key then ./nix/${key} else null) (builtins.readDir ./nix)));
+      system = "x86_64-linux";
+      isos = [
+        "gnome"
+        "minimal"
+      ];
+    in
+    {
+      formatter.${system} = nixpkgs.legacyPackages.${system}.nixfmt-rfc-style;
+      packages.${system} = lib.genAttrs isos (
+        iso:
+        (lib.nixosSystem {
+          modules = [ (self + "/nix/t2-iso-${iso}.nix") ];
+          specialArgs = { inherit nixos-hardware; };
+        }).config.system.build.isoImage
+      );
+    };
 }

nix/common.nix

@@ -1,4 +1,9 @@
-{ pkgs, modulesPath, nixos-hardware, ... }:
+{
+  pkgs,
+  modulesPath,
+  nixos-hardware,
+  ...
+}:
 
 {
   imports = [
@@ -14,16 +19,20 @@
       "t2linux.cachix.org-1:P733c5Gt1qTcxsm+Bae0renWnT8OLs0u9+yfaK2Bejw="
     ];
 
-    experimental-features = [ "nix-command" "flakes" ];
+    experimental-features = [
+      "nix-command"
+      "flakes"
+    ];
   };
 
   environment.systemPackages = with pkgs; [
     git
     python3
     dmg2img
-    (pkgs.callPackage ./pkgs/firmware-script.nix {})
+    (pkgs.callPackage ./pkgs/firmware-script.nix { })
   ];
 
   # ZFS is (sometimes) broken and prevents building without this
   nixpkgs.config.allowBroken = true;
+  nixpkgs.hostPlatform = "x86_64-linux"; # t2 is x86_64-linux only
 }

nix/pkgs/firmware-script.nix

@@ -1,4 +1,9 @@
-{ stdenvNoCC, fetchurl, lib }: stdenvNoCC.mkDerivation (final: {
+{
+  stdenvNoCC,
+  fetchurl,
+  lib,
+}:
+stdenvNoCC.mkDerivation (final: {
   pname = "get-apple-firmware";
   version = "fe8c338e6cf1238a390984ba06544833ab8792d3";
   src = fetchurl {