feat: color previews via nvim-colorizer-lua

extra.nix

@@ -179,11 +179,11 @@ inputs: let
       vim.ui = {
         noice.enable = true;
         smartcolumn.enable = true;
+        colorizer.enable = true;
       };
 
       vim.assistant = {
         copilot.enable = isMaximal;
-        #tabnine.enable = false; # FIXME: this is not working because the plugin depends on an internal script to be ran by the package manager
       };
 
       vim.session = {

flake.lock

@@ -964,6 +964,22 @@
         "type": "github"
       }
     },
+    "nvim-colorizer-lua": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1591879145,
+        "narHash": "sha256-6YrnItxExL2C8pNIdLd+hXCjsB2MbZANwWkah6dreD8=",
+        "owner": "norcalli",
+        "repo": "nvim-colorizer.lua",
+        "rev": "36c610a9717cc9ec426a07c8e6bf3b3abcb139d6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "norcalli",
+        "repo": "nvim-colorizer.lua",
+        "type": "github"
+      }
+    },
     "nvim-compe": {
       "flake": false,
       "locked": {
@@ -1325,6 +1341,7 @@
         "nvim-bufferline-lua": "nvim-bufferline-lua",
         "nvim-cmp": "nvim-cmp",
         "nvim-code-action-menu": "nvim-code-action-menu",
+        "nvim-colorizer-lua": "nvim-colorizer-lua",
         "nvim-compe": "nvim-compe",
         "nvim-cursorline": "nvim-cursorline",
         "nvim-lightbulb": "nvim-lightbulb",

flake.nix

@@ -451,6 +451,11 @@
       flake = false;
     };
 
+    nvim-colorizer-lua = {
+      url = "github:norcalli/nvim-colorizer.lua";
+      flake = false;
+    };
+
     # Assistant
     copilot-lua = {
       url = "github:zbirenbaum/copilot.lua";

lib/types/plugins.nix

@@ -81,9 +81,7 @@ with lib; let
     "project-nvim"
     "elixir-ls"
     "elixir-tools"
-    "vim-svelte"
-    "vim-javascript"
-    "vim-html"
+    "nvim-colorizer-lua"
   ];
   # You can either use the name of the plugin or a package.
   pluginsType = with types;

modules/ui/colorizer/colorizer.nix

@@ -0,0 +1,67 @@
+{
+  config,
+  lib,
+  ...
+}:
+with lib;
+with builtins; {
+  options.vim.ui.colorizer = {
+    enable = mkEnableOption "Enable nvim-colorizer.lua for color highlighting";
+
+    options = {
+      rgb = mkOption {
+        type = types.bool;
+        default = true;
+        description = "#RGB hex codes";
+      };
+
+      rrggbb = mkOption {
+        type = types.bool;
+        default = true;
+        description = "#RRGGBB hex codes";
+      };
+
+      names = mkOption {
+        type = types.bool;
+        default = true;
+        description = ''"Name" codes such as "Blue"'';
+      };
+
+      rgb_fn = mkOption {
+        type = types.bool;
+        default = false;
+        description = "CSS rgb() and rgba() functions";
+      };
+
+      rrggbbaa = mkOption {
+        type = types.bool;
+        default = false;
+        description = "#RRGGBBAA hex codes";
+      };
+
+      hsl_fn = mkOption {
+        type = types.bool;
+        default = false;
+        description = "CSS hsl() and hsla() functions";
+      };
+
+      css = mkOption {
+        type = types.bool;
+        default = true;
+        description = "Enable all CSS features: rgb_fn, hsl_fn, names, RGB, RRGGBB";
+      };
+
+      css_fn = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Enable all CSS *functions*: rgb_fn, hsl_fn";
+      };
+
+      mode = mkOption {
+        type = types.enum ["foreground" "background"];
+        default = "background";
+        description = "Set the display mode";
+      };
+    };
+  };
+}

modules/ui/colorizer/config.nix

@@ -0,0 +1,32 @@
+{
+  pkgs,
+  config,
+  lib,
+  ...
+}:
+with lib;
+with builtins; let
+  cfg = config.vim.ui.colorizer;
+in {
+  config = mkIf cfg.enable {
+    vim.startPlugins = [
+      "nvim-colorizer-lua"
+    ];
+
+    vim.luaConfigRC.colorizer = nvim.dag.entryAnywhere ''
+      require('colorizer').setup({
+         DEFAULT_OPTIONS = {
+           RGB      = ${boolToString cfg.options.rgb};
+           RRGGBB   = ${boolToString cfg.options.rrggbb};
+           names    = ${boolToString cfg.options.names};
+           RRGGBBAA = ${boolToString cfg.options.rrggbbaa};
+           rgb_fn   = ${boolToString cfg.options.rgb_fn};
+           hsl_fn   = ${boolToString cfg.options.hsl_fn};
+           css      = ${boolToString cfg.options.css};
+           css_fn   = ${boolToString cfg.options.css_fn};
+           mode     = '${toString cfg.options.mode}';
+        }
+      })
+    '';
+  };
+}

modules/ui/colorizer/default.nix

@@ -0,0 +1,6 @@
+_: {
+  imports = [
+    ./colorizer.nix
+    ./config.nix
+  ];
+}

modules/ui/default.nix

@@ -4,5 +4,6 @@ _: {
     ./modes
     ./notifications
     ./smartcolumn
+    ./colorizer
   ];
 }