Init coc.nvim extension

dev/vim-coc.nix

@@ -4,7 +4,9 @@ let
   customRC = ''
     source ${./vimrc.vim}
 
-    let $COC_NO_PLUGINS = 1
+    if !empty($COC_NIL_PATH)
+      execute 'set rtp^=' . $COC_NIL_PATH
+    endif
 
     autocmd BufRead,BufNewFile *.nix setf nix
 
@@ -83,21 +85,15 @@ let
   '';
 
   cocSetting = {
-    "coc.preferences.formatOnSaveFiletypes" = [ "nix" ];
-    "links.tooltip" = true;
+    coc.preferences.formatOnSaveFiletypes = [ "nix" ];
+    links.tooltip = true;
     semanticTokens.filetypes = [ "nix" ];
-    languageserver.nix = {
-      command = pkgs.writeShellScript "nil" ''
-        exec "$NIL_PATH" "$@"
-      '';
-      filetypes = [ "nix" ];
-      rootPatterns =  [ "flake.nix" ];
-      settings.nil = {
-        testSetting = 42;
-        formatting.command = [ "${pkgs.nixpkgs-fmt}/bin/nixpkgs-fmt" ];
-        diagnostics.excludedFiles = [ "generated.nix" ];
-      };
-    };
+
+    nil.server.path = pkgs.writeShellScript "nil" ''
+      exec "$NIL_PATH" "$@"
+    '';
+    nil.formatting.command = [ "${pkgs.nixpkgs-fmt}/bin/nixpkgs-fmt" ];
+    nil.diagnostics.excludedFiles = [ "generated.nix" ];
   };
 
 
@@ -115,6 +111,7 @@ pkgs.vim_configurable.customize {
     packages.myPlugins.start = with pkgs.vimPlugins; [
       vim-nix # File type and syntax highlighting.
       coc-nvim
+      coc-json
       # FIXME
       (nightfox-nvim.overrideAttrs (old: {
         src = pkgs.fetchFromGitHub {

editors/coc-nil/.eslintrc.js

@@ -0,0 +1,16 @@
+module.exports = {
+  env: {
+    node: true,
+  },
+  parser: '@typescript-eslint/parser',
+  extends: ['plugin:@typescript-eslint/recommended', 'plugin:prettier/recommended'],
+  rules: {
+    '@typescript-eslint/ban-ts-comment': 'off',
+    '@typescript-eslint/no-explicit-any': 'off',
+    '@typescript-eslint/no-non-null-assertion': 'off',
+    '@typescript-eslint/no-namespace': 'off',
+    '@typescript-eslint/no-empty-function': 'off',
+    '@typescript-eslint/explicit-function-return-type': 'off',
+    '@typescript-eslint/explicit-module-boundary-types': 'off',
+  },
+};

editors/coc-nil/.gitignore

@@ -0,0 +1,2 @@
+/node_modules
+/lib

editors/coc-nil/.npmignore

@@ -0,0 +1,11 @@
+src
+node_modules
+tsconfig.json
+*.map
+.tags
+.DS_Store
+webpack.config.js
+esbuild.js
+.github
+.eslintrc.js
+.prettierrc

editors/coc-nil/LICENSE-APACHE

@@ -0,0 +1 @@
+../../LICENSE-APACHE

editors/coc-nil/LICENSE-MIT

@@ -0,0 +1 @@
+../../LICENSE-MIT

editors/coc-nil/README.md

@@ -0,0 +1,37 @@
+# coc-nil
+
+**WIP**
+
+[nil] language server glue for Vim/Neovim, works as an extension with [coc.nvim].
+
+[nil]: https://github.com/oxalica/nil
+[coc.nvim]: https://github.com/neoclide/coc.nvim
+
+## Install
+
+`:CocInstall coc-nil`
+
+## Configurations
+
+This extension is configured using a jsonc file. You can open this configuration file using the command `:CocConfig`,
+and it is typically located at `$HOME/.config/nvim/coc-settings.json`.
+
+Configurations to the LSP is documentated in
+[`docs/configuration.md` of the LSP repository](https://github.com/oxalica/nil/blob/main/docs/configuration.md#reference),
+with the exception that configuration keys can **ALSO** be written as flattened dot-separated string key.
+That is, `coc-nvim` supports `"nil.nix.binary": "nix"`, `"nil": { "nix": { "binary": "nix" } }"`,
+and even `"nil": { "nix.binary": "nix" }`.
+
+The table below shows all extra configurations for the extension itself.
+
+| Configuration | Description | Default |
+|---|---|---|
+| `nil.enable` | Enable `coc-nil` | `true` |
+| `nil.server.path` | Path to the `nil` LSP server | `"nil"` |
+
+## License
+
+"coc-nil" is primarily distributed under the terms of both the MIT
+license and the Apache License (Version 2.0).
+
+See LICENSE-APACHE and LICENSE-MIT for details.