From 98c3a04f93456ec2831848bb2373a4f410a8848a Mon Sep 17 00:00:00 2001
From: Snoweuph <snow@euph.email>
Date: Mon, 1 Jun 2026 23:17:31 +0200
Subject: [PATCH] jls: package in flake

---
 flake/pkgs/by-name/jls/package.nix | 101 +++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 flake/pkgs/by-name/jls/package.nix

diff --git a/flake/pkgs/by-name/jls/package.nix b/flake/pkgs/by-name/jls/package.nix
new file mode 100644
index 00000000..a2253b59
--- /dev/null
+++ b/flake/pkgs/by-name/jls/package.nix
@@ -0,0 +1,101 @@
+# based on <https://github.com/idelice/jls/blob/master/default.nix>
+{
+  lib,
+  jdk25_headless,
+  maven,
+  lombok,
+  protobuf_25,
+  lombokSupport ? true,
+  makeWrapper,
+  fetchFromGitHub,
+}: let
+  inherit (lib.meta) getExe;
+
+  jdk = jdk25_headless;
+  java = getExe jdk;
+  jlinkVmOptions =
+    map
+    (option: ''
+      --add-flags "${option}" \
+    '')
+    [
+      "--add-modules jdk.jdeps"
+      "--add-exports jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED"
+      "--add-exports jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED"
+      "--add-exports jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED"
+      "--add-exports jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED"
+      "--add-exports jdk.compiler/com.sun.tools.javac.jvm=ALL-UNNAMED"
+      "--add-exports jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED"
+      "--add-exports jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED"
+      "--add-exports jdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED"
+      "--add-exports jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED"
+      "--add-exports jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED"
+      "--add-exports jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED"
+      "--add-opens jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED"
+      "--add-opens jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED"
+      "--add-opens jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED"
+      "--add-opens jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED"
+      "--add-opens jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED"
+      "--add-opens jdk.compiler/com.sun.tools.javac.jvm=ALL-UNNAMED"
+      "--add-opens jdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED"
+      "--add-opens jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED"
+      "--add-opens jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED"
+      "--add-opens jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED"
+      "--add-opens jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED"
+    ];
+  wrapperFlags = ''
+    ${lib.concatStringsSep " " jlinkVmOptions} \
+    --add-flags "\$JLS_JVM_OPTS" \
+    --add-flags "-Djava.util.logging.config.file=$out/share/jls/logging.properties" \
+    ${lib.optionalString lombokSupport ''--add-flags "-Dorg.javacs.lombokPath=${lombok}/share/lombok.jar"''} \
+    --add-flags "-classpath '$out/share/jls/classpath/*'" \
+    --set-default JLS_JVM_OPTS "-Xmx2g -Xms512m -XX:MaxHeapFreeRatio=50 -XX:MinHeapFreeRatio=20 -XX:+UseStringDeduplication" \
+  '';
+in
+  maven.buildMavenPackage (finalAttrs: {
+    pname = "jls";
+    version = "0.6.1";
+
+    src = fetchFromGitHub {
+      owner = "idelice";
+      repo = "jls";
+      tag = "v${finalAttrs.version}";
+      hash = "sha256-kZ96OsCMtpS3diUT/4+TEnzNb2G4LfDdrrSKuhIM9NU=";
+    };
+
+    mvnJdk = jdk;
+    mvnHash = "sha256-E/ZNOGIB/00dfhPsagwJUV6TWHCY7Jb5Ewlvyxs3sRI=";
+    mvnParameters = "-DskipTests";
+
+    nativeBuildInputs = [
+      makeWrapper
+      protobuf_25
+    ];
+
+    preBuild = ''
+      bash ./scripts/gen_proto.sh
+    '';
+
+    installPhase = ''
+      runHook preInstall
+
+      mkdir -p $out/bin $out/share/jls/
+      cp -r dist/classpath $out/share/jls/
+      install -Dm644 scripts/logging.properties $out/share/jls
+
+      makeWrapper ${java} $out/bin/jls \
+        ${wrapperFlags} \
+        --add-flags "org.javacs.Main"
+      makeWrapper ${java} $out/bin/jls-dap \
+        ${wrapperFlags} \
+        --add-flags "org.javacs.debug.JavaDebugServer"
+
+      runHook postInstall
+    '';
+
+    meta = {
+      description = "Java Language Server for Neovim";
+      license = lib.licenses.mit;
+      mainProgram = "jls";
+    };
+  })