diff options
| -rw-r--r-- | gnu/packages/aux-files/python/sitecustomize.py | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/gnu/packages/aux-files/python/sitecustomize.py b/gnu/packages/aux-files/python/sitecustomize.py index 71e328b9ac..e2348e0356 100644 --- a/gnu/packages/aux-files/python/sitecustomize.py +++ b/gnu/packages/aux-files/python/sitecustomize.py @@ -18,6 +18,7 @@ # along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. import os +import site import sys # Commentary: @@ -47,9 +48,18 @@ all_sites_norm = [os.path.normpath(p) for p in all_sites_raw] matching_sites = [p for p in all_sites_norm if p.endswith(site_packages_prefix)] -# Insert sites matching the current version into sys.path, right before -# Python's own site. This way, the user can override the libraries provided -# by Python itself. -sys_path_absolute = [os.path.realpath(p) for p in sys.path] -index = sys_path_absolute.index(python_site) -sys.path[index:index] = matching_sites +if matching_sites: + # Deduplicate the entries, append them to sys.path, and handle any + # .pth files they contain. + for s in matching_sites: + site.addsitedir(s) + + # Move the entries that were appended to sys.path in front of + # Python's own site-packages directory. This enables Guix + # packages to override Python's bundled packages, such as 'pip'. + python_site_index = sys.path.index(python_site) + new_site_start_index = sys.path.index(matching_sites[0]) + if python_site_index < new_site_start_index: + sys.path = (sys.path[:python_site_index] + + sys.path[new_site_start_index:] + + sys.path[python_site_index:new_site_start_index]) |