Jagged Alliance 2: Wine extraction failed

[sharkwouter]

This was the original issue, which was not solved yet:

I'm using the flatpak package of Minigalaxy. When installing Jagged Alliance 2 I get a "Wine extraction failed" error, with no further details.

I tried running with MG_DEBUG=1, but this did not reveal more details in the logs. What can I do to debug this issue?

I checked the code, and it looks as if minigalaxy discards the stdout and stderr of the wine process; perhaps logging could be improved here?