nixpkgs/pkgs/by-name/jo/jol/package.nix
Petr Portnov 1b83b39faa
jol: init at 0.17
Co-authored-by: Denilson S. Ebling <d.ebling8@gmail.com>
2025-08-16 16:45:27 +03:00

63 lines
1.7 KiB
Nix

{
maven,
lib,
fetchFromGitHub,
jre_minimal,
makeWrapper,
nix-update-script,
}:
maven.buildMavenPackage rec {
pname = "jol";
version = "0.17";
src = fetchFromGitHub {
owner = "OpenJDK";
repo = "jol";
tag = version;
hash = "sha256-ZJFuY2QYB8eUS3y3VRMGGwklCS93HHVkNe/dhyIx0SY=";
};
mvnHash = "sha256-yQfiHlAZZgINGAYVlK5JflWX3d8Axtv1Ke89S7x86G4=";
nativeBuildInputs = [ makeWrapper ];
postPatch = ''
substituteInPlace jol-cli/src/main/java/org/openjdk/jol/Main.java \
--replace-fail 'Usage: jol-cli.jar' 'Usage: jol-cli'
'';
installPhase = ''
runHook preInstall
install -Dm644 jol-cli/target/jol-cli.jar $out/share/jol-cli/jol-cli.jar
makeWrapper ${lib.getExe' jre_minimal "java"} $out/bin/jol-cli \
--add-flags "-jar $out/share/jol-cli/jol-cli.jar"
runHook postInstall
'';
passthru.updateScript = nix-update-script { };
meta = {
description = "Java Object Layout (JOL)";
longDescription = ''
JOL (Java Object Layout) is the tiny toolbox to analyze object layout in JVMs.
These tools are using Unsafe, JVMTI, and Serviceability Agent (SA) heavily to decode the actual object layout, footprint, and references.
This makes JOL much more accurate than other tools relying on heap dumps, specification assumptions, etc.
'';
homepage = "https://openjdk.org/projects/code-tools/jol/";
changelog = "https://github.com/openjdk/jol/releases/tag/${version}";
license = lib.licenses.gpl2ClasspathPlus;
sourceProvenance = with lib.sourceTypes; [
fromSource
binaryBytecode
];
mainProgram = "jol-cli";
maintainers = with lib.maintainers; [
debling
progrm_jarvis
];
inherit (jre_minimal.meta) platforms;
};
}