PyQt5 installation on MacOS failing with Environment error

Question

pip3 install PyQt5

results in

Collecting PyQt5
  Using cached PyQt5-5.14.2-5.14.2-cp35.cp36.cp37.cp38-abi3-macosx_10_6_intel.whl (43.1 MB)
Collecting PyQt5-sip<13,>=12.7
  Using cached PyQt5_sip-12.7.2-cp37-cp37m-macosx_10_9_x86_64.whl (63 kB)
Installing collected packages: PyQt5-sip, PyQt5
ERROR: Could not install packages due to an EnvironmentError: [Errno 2] No such file or directory: '/usr/local/bin/pylupdate5'

Anybody an idea what causes this?

Answer 1

Turns out this is caused by a previous installation of PyQt5 with Homebrew:

pylupdate5 (and as it turns out also pyuic5 and pyrcc5 ) is a link generated by Homebrew pointing to ../Cellar/pyqt/5.14.0/bin/ , which does not exists.

Removing the links in /usr/local/bin for pylupdate5 , pyuic5 , and pyrcc5 resolved the problem :

Successfully installed PyQt5-5.14.2 PyQt5-sip-12.7.2

:-)