Re: [LAD] installing python extensions

Hi Fons, Le 2022-09-22 à 03 h 56, Fons Adriaensen a écrit : It looks like wheel is not installed (locally or globally). Try installing it with "pip install wheel", or install it on the system (python3-wheel on Debian); it could be enough to fix the issue. My system still use python version 3.8, so for a test I installed python version 3.10.5 using pyenv (https://github.com/pyenv/pyenv) : pyenv install 3.10.5 To create and activate a virtualenv for my test I used: https://github.com/pyenv/pyenv-virtualenv pyenv virtualenv 3.10.5 zita pyenv activate zita But that was not enough; compiling your extension failed because wheel is missing in the virtualenv, so I installed it using "python3 -m pip install wheel", then compiling succeeded. There was one warning about the version of pip; to avoid it (before compiling): "python3 -m pip install --upgrade pip" After my test session, I deactivated the virtualenv using "source deactivate", then I deleted the virtualenv using "pyenv virtualenv-delete zita" To my knowledge, pip does not install a virtual environment, but a virtual environment includes pip. Because wheel is not installed by default, adding a build step (in the makefile) could help: "$(PIP) install wheel". Python is changing faster now, so testing on different versions is a good idea. Marc