It's been a while since Mozilla enabled an official repository for installing Firefox on Debian/Ubuntu-based distributions. What wasn't surprising was that they did it for Ubuntu-based distros, since the default offering in the official flavors of Canocal's system is a snap package. So they launched a repository where everything can be downloaded, but in DEB format. Now, Mozilla has launched another repositoryHowever, this one is intended for distributions that use RPM packages and to install Firefox Nightly.
They don't explain it in their note, but I'm clear on the differences: as I explained, the Debian/Ubuntu repository also includes the stable version, but that's because Canonical no longer offers the DEB package for that option. Fedora and other distributions that use RPM packages do have a stable Firefox in "normal" packages, but installing the "nighttime" version is a bit more complicated. That's why they released this repository.
How to install the Firefox Nightly RPM on Fedora, openSUSE, and other RPM-based distributions
For users on Fedora 41 and later, or other distributions that use the dnf5 package manager:
sudo dnf config-manager addrepo --id=mozilla --set=baseurl=https://packages.mozilla.org/rpm/firefox --set=gpgcheck=0 --set=repo_gpgcheck=0 sudo dnf makecache --refresh sudo dnf install firefox-nightly
For openSUSE or other distributions that use zypper:
sudo zypper ar -G https://packages.mozilla.org/rpm/firefox mozilla sudo zypper refresh sudo zypper install firefox-nightly
If you use other RPM-based distros such as RHEL, CentOS, Rocky Linux and older versions of Fedora (note that there are different lines for dnf and zypper users):
sudo tee /etc/yum.repos.d/mozilla.repo > /dev/null << EOF [mozilla] name=Mozilla Packages baseurl=https://packages.mozilla.org/rpm/firefox enabled=1 repo_gpgcheck=0 gpgcheck=0 EOF # For dnf users sudo dnf makecache --refresh sudo dnf install firefox-nightly # For zypper users sudo zypper refresh sudo zypper install firefox-nightly
Language packs
In theory, language packs should be installed automatically by extracting information from the language configured in the settings, but this isn't always the case. If the language is incorrect, you can install it with sudo dnf install firefox-nightly-l10n-es For Spanish. The command dns search firefox-nightly-l10n It will display all available languages.
If any of this were to fail, which it shouldn't, there's always something else that can be done. install from your binaries.