Nginix problem on clicking the source code

If you go on the following link you will receive the 502 error

502 Bad Gateway

hope it helps

It was because we still use mercurial with Python2 and the Gentoo distribution removed the support of pygments for it. I installed it with pip2 for the hg user.
It is really time to fix Issue 9158: Replace mercurial-server by hg-ssh - Tryton issue tracker.