MCPKG is a package manager for Minecraft resource packs, data packs, and crafting tweaks, powered by vanillatweaks.net.
You can manually download the latest release from here
Linux & MacOS
If you’re on ArchLinux, there’s a package available from here
Development is happening over at the MCPKG GitHub Page, and is licensed under GPL3, so you can browse the source code and make changes if you like.
Please only use the GitHub Issues page for submitting issues, otherwise I might not see it and won’t be able to help you.