Hi Liliana, Liliana writes: > For the tests that need DISPLAY, the usual thing we do here is to spawn > an Xvfb for display :1 and set DISPLAY accordingly. There are several > variants depending on what exactly else you need (some with dbus, some > without), simply grep for "xorg-server-for-tests" and you ought to find > one that fits your needs. Thanks for your advice, I was able to spawn an Xvfb for display :1 like you suggested but apparently, the tests for python-manim want to create some type of cache folder. The tests now raise a different error: `Failed to create //.cache for shader cache (Permission denied)---disabling.' I have to investigate where this error message comes from. I suppose I have to set some environment variable. Nevertheless, what would be an appriopiate writable location for the cache? > Once we find out the packages that fail regardless, that have no easy > fix, it is still acceptable to fix a few failing tests manually by > patching the test suite, or if all else fails use `#:tests? #f' with an > appropriate comment. Alright, thank you. I will give the other tests another try. Best Daniel