feat: add a home-manager example configuration

This adds a home-manager example configuration to ensure the
home-manager standalone module works properly.

.forgejo/workflows/check.yml

@@ -66,10 +66,22 @@ jobs:
       - name: Build VM configuration
         run: |
           nix build --print-build-logs '.#nixosConfigurations.vm.config.system.build.toplevel'
+  build-hm:
+    runs-on: nixos
+    needs:
+      - build-package
+      - check-nvim
+    steps:
+      - uses: "https://git.salame.cl/actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683" # v4
+      - run: nix --version
+      - name: Build Home Manager configuration
+        run: |
+          nix build --print-build-logs '.#homeConfigurations.example.activationPackage'
   report-size:
     runs-on: nixos
     needs:
       - build-vm
+      - build-hm
     steps:
       - uses: "https://git.salame.cl/actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683" # v4
       - run: nix --version

example-hm/home.nix

@@ -0,0 +1,70 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
+{
+  home = {
+    homeDirectory = "/home/jdoe";
+    stateVersion = "25.05";
+    username = "jdoe";
+  };
+
+  jhome = {
+    enable = true;
+    dev = {
+      enable = true;
+      neovimAsManPager = true;
+      rust.enable = true;
+    };
+    gui.enable = false;
+    hostName = "example";
+    user = {
+      enable = true;
+      defaultIdentity = {
+        email = "jdoe@example.org";
+        name = "John Doe";
+      };
+    };
+  };
+
+  programs = {
+    # Switch to fish if bash is started interactively
+    bash.initExtra = ''
+      if [[ $(${pkgs.procps}/bin/ps --no-header --pid=$PPID --format=comm) != "fish" && -z ''${BASH_EXECUTION_STRING} ]]
+      then
+        shopt -q login_shell && LOGIN_OPTION='--login' || LOGIN_OPTION=""
+        exec ${pkgs.fish}/bin/fish $LOGIN_OPTION
+      fi
+    '';
+
+    # Enable zellij (tmux like terminal session manager)
+    zellij.enable = lib.mkForce true;
+  };
+
+  nix = {
+    package = pkgs.lix;
+    gc = {
+      automatic = true;
+      frequency = "weekly";
+      options = "--delete-older-than 30d";
+      # run between 0 and 45min after boot if run was missed
+      randomizedDelaySec = "45min";
+    };
+    settings = {
+      # Add my personal binary cache to the mix (only for personal computers)
+      extra-substituters = [ "https://cache.salame.cl" ];
+      extra-trusted-public-keys = [ "cache.salame.cl:D+pBaoutwxja7qKGpju+CmM1LRbVmf2gqEQ/9c7qHrw=" ];
+      auto-optimise-store = true;
+    };
+  };
+
+  stylix = {
+    image = config.jhome.gui.sway.background;
+    base16Scheme = "${pkgs.base16-schemes}/share/themes/gruvbox-dark-hard.yaml";
+  };
+
+  # Let Home Manager install and manage itself.
+  programs.home-manager.enable = true;
+}

flake-modules/default.nix

@@ -5,7 +5,7 @@
 
     ./devshells.nix
     ./docs.nix
-    ./example-vm.nix
+    ./example-configs.nix
     ./nixos-modules.nix
     ./home-modules.nix
     ./nixvim-modules.nix

flake-modules/example-configs.nix

@@ -0,0 +1,33 @@
+{ inputs, lib, ... }:
+{
+  flake = {
+    # Example vm configuration
+    nixosConfigurations.vm = lib.nixosSystem {
+      modules = [
+        inputs.self.nixosModules.default
+        ../example-vm # import vm configuration
+        {
+          nixpkgs = {
+            overlays = builtins.attrValues inputs.self.overlays;
+            config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [ "steam-unwrapped" ];
+          };
+          # pin nixpkgs to the one used by the system
+          nix.registry.nixpkgs.flake = inputs.nixpkgs;
+        }
+      ];
+    };
+    homeConfigurations.example = inputs.home-manager.lib.homeManagerConfiguration {
+      pkgs = inputs.nixpkgs.legacyPackages.x86_64-linux;
+      modules = [
+        inputs.self.homeModules.standalone
+        ../example-hm/home.nix # import home-manager configuration
+        {
+          nixpkgs.overlays = [
+            inputs.self.overlays.unstable
+            inputs.lix-module.overlays.default
+          ];
+        }
+      ];
+    };
+  };
+}

flake-modules/example-vm.nix

@@ -1,18 +0,0 @@
-{ inputs, lib, ... }:
-{
-  # Example vm configuration
-  flake.nixosConfigurations.vm = lib.nixosSystem {
-    modules = [
-      inputs.self.nixosModules.default
-      ../example-vm # import vm configuration
-      {
-        nixpkgs = {
-          overlays = builtins.attrValues inputs.self.overlays;
-          config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [ "steam-unwrapped" ];
-        };
-        # pin nixpkgs to the one used by the system
-        nix.registry.nixpkgs.flake = inputs.nixpkgs;
-      }
-    ];
-  };
-}