dev: Add a script to generate the none-ls builtins

flake-modules/updates/default.nix

@@ -9,14 +9,18 @@
           repo_root=$(git rev-parse --show-toplevel)
           generated_dir=$repo_root/generated
 
-          # Rust-Analyzer
+          echo "Rust-Analyzer"
           nix build .#rust-analyzer-options
           cat ./result >"$generated_dir"/rust-analyzer.nix
 
-          # efmls-configs
+          echo "efmls-configs"
           nix build .#efmls-configs-sources
           cat ./result >"$generated_dir"/efmls-configs.nix
 
+          echo "none-ls"
+          nix build .#none-ls-builtins
+          cat ./result >"$generated_dir"/none-ls.nix
+
           nix fmt
         '';
       };
@@ -24,6 +28,7 @@
       packages = {
         rust-analyzer-options = pkgs.callPackage ./rust-analyzer.nix { };
         efmls-configs-sources = pkgs.callPackage ./efmls-configs.nix { };
+        none-ls-builtins = pkgs.callPackage ./none-ls.nix { };
       };
     };
 }

flake-modules/updates/none-ls.nix

@@ -0,0 +1,32 @@
+{
+  vimPlugins,
+  lib,
+  writeText,
+  pkgs,
+}:
+let
+  inherit (import ../../plugins/none-ls/packages.nix pkgs) packaged noPackage unpackaged;
+
+  builtinSources = lib.trivial.importJSON "${vimPlugins.none-ls-nvim.src}/doc/builtins.json";
+
+  builtinSourceNames = lib.mapAttrs (_: lib.attrNames) builtinSources;
+
+  toolNames = lib.unique (lib.flatten (lib.attrValues builtinSourceNames));
+
+  undeclaredTool = lib.filter (
+    name: !(lib.hasAttr name packaged || lib.elem name noPackage || lib.elem name unpackaged)
+  ) toolNames;
+
+  uselesslyDeclaredTool = lib.filter (name: !(lib.elem name toolNames)) (
+    unpackaged ++ noPackage ++ (lib.attrNames packaged)
+  );
+in
+assert lib.assertMsg (lib.length undeclaredTool == 0)
+  "Undeclared tools: ${lib.generators.toPretty { } undeclaredTool}";
+assert lib.assertMsg (lib.length uselesslyDeclaredTool == 0)
+  "Tool is not supported upstream: ${lib.generators.toPretty { } uselesslyDeclaredTool}";
+writeText "efmls-configs-sources.nix" (
+  "# WARNING: DO NOT EDIT\n"
+  + "# This file is generated with packages.<system>.none-ls-builtins, which is run automatically by CI\n"
+  + (lib.generators.toPretty { } builtinSourceNames)
+)