Copy that, Maxime. That makes sense. I'll work towards getting it to build without deleting that phase, then. Thanks for the feedback! On Tue, Dec 21, 2021, 13:02 Maxime Devos > wrote: Christopher Rodriguez schreef op di 21-12-2021 om 12:52 [-0500]: > That said, adding `(delete 'sanity-check)` for both beets and > beets-bandcamp does indeed make them build correctly. Is that the > appropriate fix here, or should I be trying to make them build > correctly > with the sanity check? I'm not super-familiar with that part of > python > development. I don't think we should simply delete the sanity-check phase, for the same reason that we don't set #:tests? #false when a test fails -- presumably, the sanity-check phase failing (or the failing test) indicates a real, though possibly subtle and obscure problem. If I run "guix build beets-bandcamp", I get: starting phase `sanity-check' validating 'beets-bandcamp' /gnu/store/a8zvmrbbvs8fc3gaq9vd4b31qjpkzi5i-beets-bandcamp- 0.1.4/lib/python3.9/site-packages ...checking requirements: ERROR: beets-bandcamp==0.1.4 The 'jellyfish' distribution was not found and is required by beets so I presume 'python-jellyfish' needs to be added to the propagated- inputs.  Or the 'requirements' of beets-bandcamp need can be modified to remove jellyfish.  I don't know if beets-bandcamp actually uses jellyfish, if it is optional and only required by parts of beets- bandcamp, ... Greetings, Maxime