From 6d33406492d8efa8aeeb610757f6948ac6fd6db4 Mon Sep 17 00:00:00 2001
From: foo-dogsquared <foo.dogsquared@gmail.com>
Date: Sat, 25 Dec 2021 20:32:52 +0800
Subject: [PATCH] Update themes module

Setting themes should be in `modules.themes.themes` for namespacing and
the module itself is gaining options.
---
 hosts/ni/default.nix                          |  5 +++-
 .../nixos/themes/a-happy-gnome/default.nix    | 19 ++----------
 modules/nixos/themes/default.nix              | 30 +++++++++++++------
 3 files changed, 27 insertions(+), 27 deletions(-)

diff --git a/hosts/ni/default.nix b/hosts/ni/default.nix
index 16232d09..7063d49e 100644
--- a/hosts/ni/default.nix
+++ b/hosts/ni/default.nix
@@ -27,8 +27,11 @@
       virtualization.enable = true;
     };
     editors.neovim.enable = true;
-    themes.a-happy-gnome.enable = true;
     users.users.foo-dogsquared = {};
+    themes = {
+      disableLimit = true;
+      themes.a-happy-gnome.enable = true;
+    };
     hardware-setup.backup-archive.enable = true;
   };
 
diff --git a/modules/nixos/themes/a-happy-gnome/default.nix b/modules/nixos/themes/a-happy-gnome/default.nix
index d9eef2b3..3efd1b0e 100644
--- a/modules/nixos/themes/a-happy-gnome/default.nix
+++ b/modules/nixos/themes/a-happy-gnome/default.nix
@@ -4,7 +4,7 @@
 # See https://github.com/NixOS/nixpkgs/issues/54150 for more details.
 let
   name = "a-happy-gnome";
-  cfg = config.modules.themes.a-happy-gnome;
+  cfg = config.modules.themes.themes.a-happy-gnome;
   dconf = pkgs.gnome3.dconf;
   customDconfDb = pkgs.stdenv.mkDerivation {
     name = "${name}-dconf-db";
@@ -12,7 +12,7 @@ let
   };
 in
 {
-  options.modules.themes.a-happy-gnome.enable = lib.mkEnableOption "'A happy GNOME', foo-dogsquared's configuration of GNOME desktop environment";
+  options.modules.themes.themes.a-happy-gnome.enable = lib.mkEnableOption "'A happy GNOME', foo-dogsquared's configuration of GNOME desktop environment";
 
   config = lib.mkIf cfg.enable {
     services.xserver.enable = true;
@@ -41,21 +41,6 @@ in
       gnome-tour
     ]);
 
-    programs.dconf = {
-      enable = true;
-
-      # This is an internal function which is subject to change.
-      # However, this seems to be in for some time but still, be wary.
-      # The function is found on `nixos/programs/dconf.nix` from nixpkgs.
-      profiles.customGnomeConfig = pkgs.writeTextFile {
-        name = "${name}-dconf-profile";
-        text = ''
-          user-db:user
-          file-db:${customDconfDb}
-        '';
-      };
-    };
-
     # I'm pretty sure this is already done but just to make sure.
     services.gnome.chrome-gnome-shell.enable = true;
 
diff --git a/modules/nixos/themes/default.nix b/modules/nixos/themes/default.nix
index 49ea8c84..8113a447 100644
--- a/modules/nixos/themes/default.nix
+++ b/modules/nixos/themes/default.nix
@@ -3,14 +3,26 @@
 # You can also show your desktop being modularized like this.
 { config, options, lib, pkgs, ... }:
 
-let
-  cfg = config.modules.themes;
-in
-{
-  assertions = [{
-    assertion = (lib.countAttrs (_: theme: theme.enable) cfg) < 2;
-    message = "Can't have more than one theme enabled at any given time.";
-  }];
+let cfg = config.modules.themes;
+in {
+  options.modules.themes.disableLimit = lib.mkOption {
+    type = lib.types.bool;
+    default = false;
+    description = ''
+      Whether to unlock the limit for themes. Since themes may overlap with
+      packages and configurations, this should be enabled at your own risk.
+    '';
+  };
 
-  imports = lib.mapAttrsToList (n: v: import v) (lib.filterAttrs (n: v: n != "default") (lib.filesToAttr ./.));
+  imports = lib.mapAttrsToList (n: v: import v)
+    (lib.filterAttrs (n: v: n != "default") (lib.filesToAttr ./.));
+
+  config = {
+    assertions = [{
+      assertion =
+        let enabledThemes = lib.countAttrs (_: theme: theme.enable) cfg.themes;
+        in cfg.disableLimit && (enabledThemes < 2);
+      message = "Can't have more than one theme enabled at any given time.";
+    }];
+  };
 }