inconsistent user of install prefix
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Description
I'm working on Ubuntu 18.04, using the system Python version 3.6.9, trying to install my own Python project.
Running python3 setup.py install --prefix=/usr/local will result in modules being installed into /usr/local/lib/python3.6/dist-packages/. However, when I want to switch to "developer mode", i.e. I replace the "install" command by "develop" (python3 setup.py develop --prefix=/usr/local), setuptools attempt to install the package into /usr/local/lib/python3.6/site-packages instead. (notice the difference between dist-packages and site-packages in the path).
Where does this inconsistency stem from, and how can I force the path to be consistent ?
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Research direction
Start by reproducing the two commands in setup.py: install and develop, using Python 3.6.9 on Ubuntu 18.04 with --prefix=/usr/local. Trace how each command selects dist-packages versus site-packages, then document or test a consistent path-selection behavior and verify both installation modes.
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Assessment
- Tech stack
- python
- Domain
- build-system
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100