bv_maker_pure_python.pth is never cleared

[denisri]

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Author Name: Cointepas, Yann (@sapetnioc)
Original Redmine Issue: 12733, https://bioproj.extra.cea.fr/redmine/issues/12733
Original Date: 2015-06-11
Original Assignee: Cointepas, Yann

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For pure python bv_maker modules, there is a special configuration code that make sure that the Python source of each component is in sys.path. It rely on a file python/sitecustomize/bv_maker_pure_python.pth located in the build directory. Each component code is independent and just make sure that its source directory is in this file. But this file is never cleared, therefore directories put here once are here forever. Moreover, directories are added at the end. Thus older directories are first in the list.

[sapetnioc]

Re-activate this issue is a good moment to think about this bv_maker_pure_python.pth file. I will try to see if it is possible to replace it by using pip install -e. A priori, it does not seem too difficult now that we have casa-distro.