From the comment in python-xyz.scm: ;; Make sure to upgrade python-llvmlite in (gnu packages llvm) together with ;; python-numba. They have a very unflexible relationship. -- Efraim Flashner אפרים פלשנר GPG key = A28B F40C 3E55 1372 662D 14F7 41AA E7DC CA3D 8351 Confidentiality cannot be guaranteed on emails sent or received unencrypted