Repository hosting builds of Firefox Nightly for Flatpak.

Add this repo as a Flatpak remote and install Firefox Nightly with:

flatpak --user remote-add --no-gpg-verify --if-not-exists firefox-nightly https://kierandrewett.github.io/firefox-nightly-flatpak/
flatpak install --user -y firefox-nightly org.mozilla.FirefoxNightly

To update later:

flatpak update org.mozilla.FirefoxNightly

To build and install locally, run:

./build.sh

This will:

• Download the latest Firefox Nightly.
• Build the Flatpak via flatpak-builder.
• Create or update a local Flatpak remote firefox-nightly-local pointing at the local repo/ directory.
• Install or update org.mozilla.FirefoxNightly from that local remote.

I wanted Firefox Nightly on Linux and couldn't find an option that wasn't half-broken. On Fedora especially, the COPR repos are either dead or need more effort to keep working than they're worth.

Flatpak ended up being the least annoying option. It's distro-agnostic, updates cleanly and generally has less hassle.