modules: add base16 Theming support

theme/theme.nix: fix formatting

supported-themes.nix: formatting

clean up base16-colors.nix

theme: fix plugin setup, change base16 flake input

flake.nix

@@ -349,6 +349,11 @@
     };
 
     # Themes
+    plugin-base16 = {
+      url = "github:rrethy/base16-nvim";
+      flake = false;
+    };
+
     plugin-tokyonight = {
       url = "github:folke/tokyonight.nvim";
       flake = false;

lib/types/default.nix

@@ -7,9 +7,11 @@
   typesPlugin = import ./plugins.nix {inherit inputs lib;};
   typesLanguage = import ./languages.nix {inherit lib;};
   typesCustom = import ./custom.nix {inherit lib;};
+  typesTheme = import ./theme.nix {inherit lib;};
 in {
   inherit (typesDag) dagOf;
   inherit (typesPlugin) pluginsOpt extraPluginType mkPluginSetupOption luaInline pluginType borderType;
   inherit (typesLanguage) diagnostics mkGrammarOption;
   inherit (typesCustom) anythingConcatLists char;
+  inherit (typesTheme) hexColorType;
 }

lib/types/theme.nix

@@ -0,0 +1,13 @@
+{lib}: let
+  inherit (lib.strings) isString hasPrefix;
+  inherit (lib.types) mkOptionType;
+  inherit (builtins) stringLength;
+  # This was almost entirely taken from raf himself.
+in {
+  hexColorType = mkOptionType {
+    name = "hex-color";
+    descriptionClass = "noun";
+    description = "RGB color in hex format";
+    check = x: isString x && hasPrefix "#" x && stringLength x == 7;
+  };
+}

modules/plugins/theme/base16-colors.nix

@@ -0,0 +1,69 @@
+{lib}: let
+  inherit (lib.options) mkOption;
+  inherit (lib.nvim.types) hexColorType;
+in {
+  base00 = mkOption {
+    type = hexColorType;
+    default = "#1e1e2e";
+  };
+  base01 = mkOption {
+    type = hexColorType;
+    default = "#181825";
+  };
+  base02 = mkOption {
+    type = hexColorType;
+    default = "#313244";
+  };
+  base03 = mkOption {
+    type = hexColorType;
+    default = "#45475a";
+  };
+  base04 = mkOption {
+    type = hexColorType;
+    default = "#585b70";
+  };
+  base05 = mkOption {
+    type = hexColorType;
+    default = "#cdd6f4";
+  };
+  base06 = mkOption {
+    type = hexColorType;
+    default = "#f5e0dc";
+  };
+  base07 = mkOption {
+    type = hexColorType;
+    default = "#b4befe";
+  };
+  base08 = mkOption {
+    type = hexColorType;
+    default = "#f38ba8";
+  };
+  base09 = mkOption {
+    type = hexColorType;
+    default = "#fab387";
+  };
+  base0A = mkOption {
+    type = hexColorType;
+    default = "#a6e3a1";
+  };
+  base0B = mkOption {
+    type = hexColorType;
+    default = "#94e2d5";
+  };
+  base0C = mkOption {
+    type = hexColorType;
+    default = "#a6e3a1";
+  };
+  base0D = mkOption {
+    type = hexColorType;
+    default = "#89b4fa";
+  };
+  base0E = mkOption {
+    type = hexColorType;
+    default = "#cba6f4";
+  };
+  base0F = mkOption {
+    type = hexColorType;
+    default = "#f2cdcd";
+  };
+}

modules/plugins/theme/supported-themes.nix

@@ -4,7 +4,15 @@
 }: let
   inherit (lib.strings) optionalString;
   inherit (lib.trivial) boolToString warnIf;
+  inherit (lib.nvim.lua) toLuaObject;
+  cfg = config.vim.theme;
 in {
+  base16 = {
+    setup = {base16-colors, ...}: ''
+      -- Base-16 theme
+      require('base16-colorscheme').setup(${toLuaObject cfg.base16-colors})
+    '';
+  };
   onedark = {
     setup = {style ? "dark", ...}: ''
       -- OneDark theme
@@ -20,6 +28,7 @@ in {
     setup = {
       style ? "night",
       transparent,
+      ...
     }: ''
       require('tokyonight').setup {
         transparent = ${boolToString transparent};
@@ -42,6 +51,7 @@ in {
     setup = {
       style ? "mocha",
       transparent ? false,
+      ...
     }: ''
       -- Catppuccin theme
       require('catppuccin').setup {

modules/plugins/theme/theme.nix

@@ -13,13 +13,16 @@
   supportedThemes = import ./supported-themes.nix {
     inherit lib config;
   };
+  base16-colors = import ./base16-colors.nix {
+    inherit lib;
+  };
 in {
   options.vim.theme = {
     enable = mkOption {
       type = bool;
       description = "Enable theming";
     };
-
+    inherit base16-colors;
     name = mkOption {
       type = enum (attrNames supportedThemes);
       description = "Supported themes can be found in `supportedThemes.nix`";
@@ -29,7 +32,6 @@ in {
       type = enum supportedThemes.${cfg.name}.styles;
       description = "Specific style for theme if it supports it";
     };
-
     transparent = mkOption {
       type = bool;
       default = false;
@@ -45,10 +47,12 @@ in {
   config = mkIf cfg.enable {
     vim = {
       startPlugins = [cfg.name];
-      luaConfigRC.theme = entryBefore ["pluginConfigs"] ''
-        ${cfg.extraConfig}
-        ${supportedThemes.${cfg.name}.setup {inherit (cfg) style transparent;}}
-      '';
+      luaConfigRC = {
+        theme = entryBefore ["pluginConfigs"] ''
+          ${cfg.extraConfig}
+          ${supportedThemes.${cfg.name}.setup {inherit (cfg) style transparent base16-colors;}}
+        '';
+      };
     };
   };
 }