feat(sass): switch to @use and setup lsp server

packages/some-sass-language-server/default.nix

@@ -0,0 +1,38 @@
+{
+  writeShellApplication,
+  nodejs_latest,
+  prefetch-npm-deps,
+  jq,
+  buildNpmPackage,
+  makeWrapper,
+  ...
+}: let
+  package = builtins.fromJSON (builtins.readFile ./package.json);
+in
+  buildNpmPackage {
+    pname = "some-sass-language-server";
+    version = package.dependencies.some-sass-language-server;
+
+    src = ./.;
+    dontNpmBuild = true;
+
+    nativeBuildInputs = [makeWrapper];
+
+    installPhase = ''
+      mkdir -p $out/bin
+      cp -r node_modules $out
+      makeWrapper $out/node_modules/.bin/some-sass-language-server $out/bin/some-sass-language-server
+    '';
+
+    npmDepsHash = "sha256-4VYm0UDbdOh2jo8/YkVG4mt0nvkHWTllJWxaZvRuxCc=";
+
+    passthru.update = writeShellApplication {
+      name = "update";
+      runtimeInputs = [
+        nodejs_latest
+        prefetch-npm-deps
+        jq
+      ];
+      text = import ./update.nix;
+    };
+  }