Hi Théo, > I don’t understand how this could happen though since the definition of > python-setuptools seems just fine in python-xyz.scm ... unfortunately our python package bundles setuptools 41.2.0, which will collide with python-setuptools. I ran into the same issue with python-jupyter-packaging a while ago too[1]. I tried adding python-setuptools as a native-input, but it failed, because of said collision.
Cheers, Lars [1] https://issues.guix.gnu.org/46848#9
