bug#52869: xpra 4.3 appears to be broken

[Lars-Dominik Braun]

Hi,


> $ guix environment --ad-hoc xpra --pure -- xpra start :100
> 2021-12-29 09:44:20,712 Warning: cannot load cython bencode 
> module: No module named 'xpra.net.bencode.cython_bencode'
> Warning: using '/run/user/1000' as XDG_RUNTIME_DIR
> xpra initialization error:
>  start is not supported by this local installation
it’s also broken for me and I couldn’t come up with an easy fix,
so I reverted the upgrade to 4.3 for now. If you `guix pull` it should
be back to 4.2.2.

You definitely can use inferiors to work around something like this. You
could also run a known-good version via `guix shell --commit=xxx`.

Cheers,
Lars