lsp/presets/jls: init

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

@@ -323,6 +323,9 @@
 
 [Snoweuph](https://github.com/snoweuph)
 
+- Added {option}`vim.lsp.presets.jls.enable` and made it available under
+  `vim.languages.java.lsp.servers`.
+
 - Allow the usage of `pks.tree-sitter-grammars` in
   {option}`vim.treesitter.grammars` and language module tree-sitter package
   options created via `mkGrammarOption`.

modules/plugins/languages/java.nix

@@ -14,7 +14,7 @@
   cfg = config.vim.languages.java;
 
   defaultServers = ["jdt-language-server"];
-  servers = ["jdt-language-server"];
+  servers = ["jdt-language-server" "jls"];
 in {
   options.vim.languages.java = {
     enable = mkEnableOption "Java language support";

modules/plugins/lsp/presets/default.nix

@@ -28,6 +28,7 @@
     ./intelephense.nix
     ./jdt-language-server.nix
     ./jinja-lsp.nix
+    ./jls.nix
     ./jq-lsp.nix
     ./julia-languageserver.nix
     ./just-lsp.nix

modules/plugins/lsp/presets/jls.nix

@@ -0,0 +1,34 @@
+{
+  config,
+  lib,
+  pkgs,
+  inputs,
+  ...
+}: let
+  inherit (lib.meta) getExe;
+  inherit (lib.modules) mkIf;
+  inherit (lib.nvim.types) mkLspPresetEnableOption;
+
+  cfg = config.vim.lsp.presets.jls;
+in {
+  options.vim.lsp.presets.jls = {
+    enable = mkLspPresetEnableOption "jls" "NeoVim Java" [];
+  };
+
+  config = mkIf cfg.enable {
+    vim.lsp.servers.jls = {
+      enable = true;
+      cmd = [(getExe inputs.self.packages.${pkgs.stdenv.hostPlatform.system}.jls)];
+      root_markers = [
+        ".git"
+        ".java-version"
+        "pom.xml"
+        "build.xml"
+        "build.gradle"
+        "build.gradle.kts"
+        "settings.gradle"
+        "settings.gradle.kts"
+      ];
+    };
+  };
+}