extract stylix to separate module, add nixos module with auto-import

README.md

@@ -43,10 +43,18 @@ inputs = {
 ```
 
 ```nix
-# home.nix
+# home.nix (standalone home-manager)
 imports = [ inputs.nova-shell.homeModules.default ];
 ```
 
+Or, if you use home-manager as a NixOS module, import the NixOS module instead -
+it auto-injects the hm module (and the stylix module, if stylix is present):
+
+```nix
+# configuration.nix
+imports = [ inputs.nova-shell.nixosModules.default ];
+```
+
 ### Without Nix
 
 You poor thing. Here's what the Nix packaging does for you, manually:
@@ -75,11 +83,17 @@ programs.nova-shell.enable = true;
 ```
 
 This installs the bar, the Symbols Nerd Font, and a systemd user service that
-starts with `graphical-session.target`. If you use
-[stylix](https://github.com/danth/stylix), colors and fonts are populated
-automatically — one fewer thing for the AI to have gotten wrong. If you do not
-use stylix, you get Catppuccin Mocha, because my keeper has
-taste and it is purple.
+starts with `graphical-session.target`. If you do not configure a theme,
+you get Catppuccin Mocha, because my keeper has taste and it is purple.
+
+If you use [stylix](https://github.com/danth/stylix), import the stylix module
+to have colors and fonts populated automatically:
+
+```nix
+imports = [ nova-shell.homeModules.stylix ];
+```
+
+You can disable it with `stylix.targets.nova-shell.enable = false`.
 
 ### Disabling modules
 
@@ -142,8 +156,7 @@ nix build .#docs
 
 ### Theme
 
-Theme keys are merged on top of whatever stylix provides. You only need to
-specify what you want to override. Values are written to
+Theme keys are written to
 `~/.config/nova-shell/theme.json`. Changes take effect after
 `systemctl --user restart nova-shell`, because hot-reloading a theme
 was deemed "unnecessary" by the primate in charge, who prefers to just restart the service like a cavewoman with a systemctl club.
@@ -158,7 +171,7 @@ programs.nova-shell.theme = {
   fontSize   = 13;
   fontFamily = "JetBrains Mono";
 
-  # override individual palette entries if stylix's choices personally offend you
+  # override individual palette entries (or stylix defaults, if you imported the stylix module)
   colors.base00 = "#1a1a2e";
   colors.base05 = "#e0e0f0";
 };

flake.nix

@@ -202,7 +202,10 @@
         }
       );
 
+      nixosModules.default = import ./nix/nixos-module.nix self;
+
       homeModules.default = import ./nix/hm-module.nix self;
+      homeModules.stylix = import ./nix/stylix.nix self;
       homeManagerModules.default = self.homeModules.default;
     };
 }

nix/hm-module.nix

@@ -7,40 +7,6 @@ self:
 }:
 let
   cfg = config.programs.nova-shell;
-
-  stylixAvailable = config ? lib && config.lib ? stylix;
-
-  stylixTheme =
-    let
-      c = config.lib.stylix.colors.withHashtag;
-      f = config.stylix.fonts;
-    in
-    {
-      colors = {
-        inherit (c)
-          base00
-          base01
-          base02
-          base03
-          base04
-          base05
-          base06
-          base07
-          base08
-          base09
-          base0A
-          base0B
-          base0C
-          base0D
-          base0E
-          base0F
-          ;
-      };
-      fontFamily = f.sansSerif.name;
-      fontSize = f.sizes.desktop;
-      barOpacity = 1.0 - config.stylix.opacity.desktop;
-      iconFontFamily = "Symbols Nerd Font";
-    };
 in
 {
   options.programs.nova-shell = {
@@ -295,7 +261,7 @@ in
         Keys: colors (base00-base0F), fontFamily, iconFontFamily, fontSize,
         barOpacity, barHeight, barPadding, groupSpacing, groupPadding, moduleSpacing,
         radius, screenRadius, reducedMotion.
-        Automatically populated from stylix when it is available.
+        Populated from stylix when homeModules.stylix is imported.
       '';
     };
 
@@ -327,11 +293,8 @@ in
         cfg.modules;
 
     xdg.configFile."nova-shell/theme.json".source =
-      let
-        stylixDefaults = if stylixAvailable then stylixTheme else { };
-        finalTheme = lib.recursiveUpdate stylixDefaults cfg.theme;
-      in
-      (pkgs.formats.json { }).generate "nova-shell-theme.json" finalTheme;
+      (pkgs.formats.json { }).generate "nova-shell-theme.json"
+        cfg.theme;
 
     # Niri layer rules for backdrop placement (requires niri-flake hm module)
     programs.niri.settings.layer-rules = lib.mkIf (config ? programs && config.programs ? niri) [

nix/nixos-module.nix

@@ -0,0 +1,22 @@
+self:
+{
+  config,
+  options,
+  lib,
+  ...
+}:
+let
+  cfg = config.programs.nova-shell;
+in
+{
+  options.programs.nova-shell.enable = lib.mkEnableOption "nova-shell Quickshell bar";
+
+  config = lib.mkIf cfg.enable (
+    lib.optionalAttrs (options ? home-manager) {
+      home-manager.sharedModules = [
+        self.homeModules.default
+      ]
+      ++ lib.optionals (options ? stylix) [ self.homeModules.stylix ];
+    }
+  );
+}

nix/stylix.nix

@@ -0,0 +1,40 @@
+_:
+{
+  lib,
+  config,
+  ...
+}:
+let
+  inherit (lib) mkDefault mkIf;
+  c = config.lib.stylix.colors.withHashtag;
+  f = config.stylix.fonts;
+in
+{
+  options.stylix.targets.nova-shell.enable = config.lib.stylix.mkEnableTarget "nova-shell" true;
+
+  config = mkIf (config.stylix.enable && config.stylix.targets.nova-shell.enable) {
+    programs.nova-shell.theme = {
+      colors = {
+        base00 = mkDefault c.base00;
+        base01 = mkDefault c.base01;
+        base02 = mkDefault c.base02;
+        base03 = mkDefault c.base03;
+        base04 = mkDefault c.base04;
+        base05 = mkDefault c.base05;
+        base06 = mkDefault c.base06;
+        base07 = mkDefault c.base07;
+        base08 = mkDefault c.base08;
+        base09 = mkDefault c.base09;
+        base0A = mkDefault c.base0A;
+        base0B = mkDefault c.base0B;
+        base0C = mkDefault c.base0C;
+        base0D = mkDefault c.base0D;
+        base0E = mkDefault c.base0E;
+        base0F = mkDefault c.base0F;
+      };
+      fontFamily = mkDefault f.sansSerif.name;
+      fontSize = mkDefault f.sizes.desktop;
+      barOpacity = mkDefault (1.0 - config.stylix.opacity.desktop);
+    };
+  };
+}