languages/scss: WIP

Author: snoweuph

configuration.nix

@@ -57,6 +57,7 @@ isMaximal: {
       clang.enable = isMaximal;
       cmake.enable = isMaximal;
       css.enable = isMaximal;
+      scss.enable = isMaximal;
       html.enable = isMaximal;
       json.enable = isMaximal;
       sql.enable = isMaximal;

docs/manual/release-notes/rl-0.9.md

@@ -53,6 +53,9 @@
 
 - Added `json5` into `languages.json`. Some options where renamed.
 
+- Split SCSS from `languages.css` into `languages.scss` and add extra tools for
+  SCSS/SASS.
+
 ## Changelog {#sec-release-0-9-changelog}
 
 [midischwarz12](https://github.com/midischwarz12):

modules/plugins/languages/css.nix

@@ -18,13 +18,12 @@
   servers = {
     cssls = {
       cmd = ["${pkgs.vscode-langservers-extracted}/bin/vscode-css-language-server" "--stdio"];
-      filetypes = ["css" "scss" "less"];
+      filetypes = ["css" "less"];
       # needed to enable formatting
       init_options = {provideFormatter = true;};
       root_markers = [".git" "package.json"];
       settings = {
         css.validate = true;
-        scss.validate = true;
         less.validate = true;
       };
     };

modules/plugins/languages/default.nix

@@ -13,6 +13,7 @@ in {
     ./clojure.nix
     ./cmake.nix
     ./css.nix
+    ./scss.nix
     ./elixir.nix
     ./elm.nix
     ./fsharp.nix

modules/plugins/languages/scss.nix

@@ -0,0 +1,129 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}: let
+  inherit (builtins) attrNames;
+  inherit (lib.options) mkEnableOption mkOption;
+  inherit (lib.meta) getExe;
+  inherit (lib.modules) mkIf mkMerge;
+  inherit (lib.types) enum listOf;
+  inherit (lib.nvim.types) mkGrammarOption diagnostics;
+  inherit (lib.nvim.attrsets) mapListToAttrs;
+
+  cfg = config.vim.languages.scss;
+
+  defaultServer = ["scss-cssls"];
+  servers = {
+    scss-cssls = {
+      cmd = ["${pkgs.vscode-langservers-extracted}/bin/vscode-css-language-server" "--stdio"];
+      filetypes = ["scss" "sass"];
+      # needed to enable formatting
+      init_options = {provideFormatter = true;};
+      root_markers = [".git" "package.json"];
+      settings = {
+        scss.validate = true;
+      };
+    };
+  };
+
+  defaultFormat = ["prettier"];
+  formats = {
+    prettier = {
+      command = getExe pkgs.prettier;
+    };
+
+    prettierd = {
+      command = getExe pkgs.prettierd;
+    };
+  };
+
+  defaultDiagnosticsProvider = ["stylelint"];
+  diagnosticsProviders = {
+    stylelint = {
+      config = {
+        cmd = getExe pkgs.stylelint;
+      };
+    };
+  };
+in {
+  options.vim.languages.scss = {
+    enable = mkEnableOption "SCSS/SASS language support";
+
+    treesitter = {
+      enable = mkEnableOption "SCSS treesitter" // {default = config.vim.languages.enableTreesitter;};
+      package = mkGrammarOption pkgs "scss";
+    };
+
+    lsp = {
+      enable = mkEnableOption "SCSS/SASS LSP support" // {default = config.vim.lsp.enable;};
+      servers = mkOption {
+        type = listOf (enum (attrNames servers));
+        default = defaultServer;
+        description = "SCSS/SASS LSP server to use";
+      };
+    };
+
+    format = {
+      enable = mkEnableOption "SCSS/SASS formatting" // {default = config.vim.languages.enableFormat;};
+      type = mkOption {
+        description = "SCSS/SASS formatter to use";
+        type = listOf (enum (attrNames formats));
+        default = defaultFormat;
+      };
+    };
+
+    extraDiagnostics = {
+      enable = mkEnableOption "extra SCSS/SASS diagnostics" // {default = config.vim.languages.enableExtraDiagnostics;};
+      types = diagnostics {
+        langDesc = "SCSS";
+        inherit diagnosticsProviders;
+        inherit defaultDiagnosticsProvider;
+      };
+    };
+  };
+
+  config = mkIf cfg.enable (mkMerge [
+    (mkIf cfg.treesitter.enable {
+      vim.treesitter.enable = true;
+      vim.treesitter.grammars = [cfg.treesitter.package];
+    })
+
+    (mkIf cfg.lsp.enable {
+      vim.lsp.servers =
+        mapListToAttrs (name: {
+          inherit name;
+          value = servers.${name};
+        })
+        cfg.lsp.servers;
+    })
+
+    (mkIf cfg.format.enable {
+      vim.formatter.conform-nvim = {
+        enable = true;
+        setupOpts = {
+          formatters_by_ft.scss = cfg.format.type;
+          formatters_by_ft.sass = cfg.format.type;
+          formatters =
+            mapListToAttrs (name: {
+              inherit name;
+              value = formats.${name};
+            })
+            cfg.format.type;
+        };
+      };
+    })
+
+    (mkIf cfg.extraDiagnostics.enable {
+      vim.diagnostics.nvim-lint = {
+        enable = true;
+        linters_by_ft.scss = cfg.extraDiagnostics.types;
+        linters_by_ft.sass = cfg.extraDiagnostics.types;
+        linters =
+          mkMerge (map (name: {${name} = diagnosticsProviders.${name}.config;})
+            cfg.extraDiagnostics.types);
+      };
+    })
+  ]);
+}