The source code is stored in a git repository at GNOME's git database. Anyone can clone it using the following command:
git clone git://git.gnome.org/gnome-photos
Alternatively, you can download tarball archives of earlier Photos releases.
Development in Photos is tracked using GNOME's bugtracker. Search the bugtracker for any issues or feature requests you may have. Feel free to work on fixing any bug filed against Photos.
Photos' design space
The objectives of Photos as application. This is also the space for the current tentative design for implemented and upcoming aspects of Photos.
How to debug Photos
When Photos misbehaves, steps can be taken to narrow down the cause of the problem. This can be valuable information when filing a bug report.
Most contributors hang out in #photos on irc.gnome.org. Contributors, users and developers are more than welcome to direct any questions about Photos there. Currently Photos is being developed by: