Installing Valhelsia on Linux
I finally got Valhelsia (a Minecraft mod pack that adds a ton of magic, technology, agriculture and environmental features) running on Linux again! Since CurseForge partially closed their API, MultiMC (A Minecraft launcher that makes it easy to manage multiple configurations of Minecraft on one system) no longer downloads the mods from CurseForge at all.
The CurseForge launcher doesn’t even support Minecraft on Linux.
Someone suggested ATLauncher, which does run on Linux (it even offers actual Linux packages for Fedora, Debian, etc.), and works around the CurseForge API limits by downloading the mods it can, then pointing you directly to the remaining mods to download manually.
Manually downloading two mods was a lot easier than downloading several dozen!