Maxim Cournoyer cb72f9a773 gnu: python: Replace PYTHONPATH by GUIX_PYTHONPATH. ... Using PYTHONPATH as a mean to discover the Python packages had the following issues: 1. It is not versioned, so different versions of Python would clash if installed in a shared profile. 2. It would interfere with the host Python site on foreign distributions, sometimes preventing a a user to login their GDM session (!). 3. It would take precedence over user installed Python packages installed through pip. 4. It would leak into Python virtualenvs, which are supposed to create isolated Python environments. This changes fixes the above issues by making use of a sitecustomize.py module. The newly introduced GUIX_PYTHONPATH environment variable is read from the environment, filtered for the current Python version of the interpreter, and spliced in 'sys.path' just before Python's own site location, which provides the expected behavior. * gnu/packages/aux-files/python/sitecustomize.py: New file. * Makefile.am: Register it. * gnu/packages/python.scm (customize-site) (guix-pythonpath-search-path): New procedures. (python-2.7)[phases]{install-sitecustomize.py}: New phase. [native-inputs]{sitecustomize.py}: New input. [native-search-paths]: Replace PYTHONPATH with GUIX_PYTHONPATH. (python-3.9)[native-search-paths]: Likewise. [phases]{install-sitecustomize}: Override with correct version. [native-search-paths]: Replace PYTHONPATH with GUIX_PYTHONPATH. * gnu/packages/commencement.scm (python-boot0): [phases]{install-sitecustomize}: Likewise. [native-inputs]{sitecustomize.py}: New input. [native-search-paths]: Replace PYTHONPATH with GUIX_PYTHONPATH. * guix/build/python-build-system.scm (site-packages): Do not add a trailing '/'. squash! gnu: python: Replace PYTHONPATH by GUIX_PYTHONPATH.		2021-02-01 11:53:42 -05:00
..
bootloader	system: Allow separated /boot and encrypted root.	2020-12-21 18:41:11 +01:00
build	Merge branch 'staging' into 'core-updates'.	2021-01-13 23:45:53 -05:00
installer
machine	machine: ssh: Do not import the host (guix config), really.	2021-01-04 11:51:48 +01:00
packages	gnu: python: Replace PYTHONPATH by GUIX_PYTHONPATH.	2021-02-01 11:53:42 -05:00
services	services: kernel-module-loader: Return a single 'shepherd-service'.	2021-01-06 19:18:58 +01:00
system	Merge branch 'staging' into 'core-updates'.	2021-01-13 23:45:53 -05:00
tests	tests: monitoring: Use the latest postgresql for testing Zabbix.	2021-01-04 18:07:53 -05:00
artwork.scm
bootloader.scm
ci.scm
image.scm
installer.scm
local.mk	gnu: fontconfig: Update to 2.13.93.	2021-01-29 15:05:41 -05:00
machine.scm
packages.scm
services.scm
system.scm	system: Allow separated /boot and encrypted root.	2020-12-21 18:41:11 +01:00
tests.scm