feat: more dynamic theming

modules/home-manager/programs/nixvim/default.nix

@@ -1,28 +1,18 @@
 { pkgs }:
-let
-  darkman = pkgs.vimUtils.buildVimPlugin {
-    name = "darkman";
-    src = pkgs.buildGoModule {
-      pname = "darkman.nvim";
-      version = "0.0.1";
-      vendorHash = "sha256-HpyKzvKVN9hVRxxca4sdWRo91H32Ha9gxitr7Qg5MY8=";
-      src = pkgs.fetchFromGitHub {
-        owner = "4e554c4c";
-        repo = "darkman.nvim";
-        rev = "150aa63a13837c44abd87ff20d3a806321a17b2d";
-        sha256 = "sha256-ssEYdM460I1rufjgh63CEkLi4K+bEWbwku/6gQbytno=";
-      };
-      postInstall = ''
-        cp -r lua $out
-      '';
-    };
-  };
-in
 {
   enable = true;
   defaultEditor = true;
   vimAlias = true;
 
+  colorscheme = "matugen";
+  autoCmd = [
+    {
+      event = [ "Signal" ];
+      pattern = [ "SIGUSR1" ];
+      command = "colorscheme matugen";
+    }
+  ];
+
   opts = {
     number = true;
     relativenumber = true;
@@ -449,7 +439,6 @@ in
   ];
   extraPlugins = with pkgs.vimPlugins; [
     vim-mergetool
-    darkman
     rest-nvim
     plenary-nvim
     actions-preview-nvim