Install or upgrade

mozregression-gui

For the graphical interface, we provide a simple installation process:

Windows: Download the latest mozregression-gui.exe file from the github releases. Once the file is downloaded double-click on it and follow the installation process. Some anti-virus programs falsely claim that mozregression is a virus, you can ignore this warning: see bug 1647533.
Mac: Download the latest mozregression-gui.dmg file from the github releases. Once the file is downloaded, click on it and drag the “mozregression GUI” icon to “Applications”. Note that on recent versions of MacOS X you will need to override the setting that disallows installing applications from unidentified developers since at present we do not sign mozregression (see bug 1366570).
Linux: Download the latest mozregression-gui.tar.gz file from the github releases. Once the file is downloaded, extract it and run the mozregression-gui file in the mozregression-gui directory. Example:
```
tar xf mozregression-gui.tar.gz
mozregression-gui/mozregression-gui
```

The original command line tool, mozregression, is a Python (3.6+) package installable via pip. You can find it on pypi, as mozregression

If you have an existing Firefox source checkout, you can install and use mozregression via mach. For example:

./mach mozregression --help