leanify: init at unstable-2022-12-04

The stable v0.4.3 from 2015 wouldn't compile for me, so I just chose the
last git commit. According to the changelog, there is v0.4.4, but no git
tag or GitHub release is available.

pkgs/tools/misc/leanify/default.nix

@@ -0,0 +1,39 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+}:
+
+stdenv.mkDerivation rec {
+  pname = "leanify";
+  version = "unstable-2022-12-04";
+
+  src = fetchFromGitHub {
+    owner = "JayXon";
+    repo = "Leanify";
+    rev = "7847668ac5bf0df1d940b674bc8b907bd1b37044";
+    hash = "sha256-KxVV7AW9sEfH4YTPDfeJk7fMMGh0eSkECXM/Mv9XqBA=";
+  };
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin
+    cp leanify $out/bin/
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Lightweight lossless file minifier/optimizer";
+    longDescription = ''
+      Leanify is a lightweight lossless file minifier/optimizer.
+      It removes unnecessary data (debug information, comments, metadata, etc.) and recompress the file to reduce file size.
+      It will not reduce image quality at all.
+    '';
+    homepage = "https://github.com/JayXon/Leanify";
+    changelog = "https://github.com/JayXon/Leanify/blob/master/CHANGELOG.md";
+    license = licenses.mit;
+    maintainers = [ maintainers.mynacol ];
+    platforms = platforms.all;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -9448,6 +9448,8 @@ with pkgs;
 
   l3afpad = callPackage ../applications/editors/l3afpad { };
 
+  leanify = callPackage ../tools/misc/leanify { };
+
   leatherman = callPackage ../development/libraries/leatherman { };
 
   ledit = callPackage ../tools/misc/ledit {