Arch Linux / Manjaro #

There are several AUR packages available:

# stable source package:
yay -S polymc
# stable binary package:
yay -S polymc-bin
# latest git package:
yay -S polymc-git

If you want to use Qt 5 to build the packages instead:

# stable Qt 5 source package:
yay -S polymc-qt5
# stable Qt 5 binary package:
yay -S polymc-qt5-bin
# latest Qt 5 git package:
yay -S polymc-qt5-git

You can replace yay -S with your preferred AUR helper's install command.

Nix #

A Nix derivation is available.

RPM #

An RPM package is available on COPR:

dnf copr enable polymc/polymc

Gentoo Linux #

ebuilds for PolyMC can be downloaded from the polymc overlay.

Write the following to /etc/portage/repos.conf/polymc.conf:

[polymc]
location = /var/db/repos/polymc
sync-type = git
sync-uri = https://git.swurl.xyz/PolyMC/overlay.git

If you want to build and install the latest version from git, then unmask the 9999 ebuild:

echo "=games-action/polymc-9999 **" | sudo tee -a /etc/portage/package.accept_keywords/polymc

If your package.accept_keywords is simply a file, remove the /polymc at the end.

Finally, sync the overlay:

sudo emaint sync -r polymc

And emerge:

sudo emerge -a polymc