Use setup.py entry_points for installation

This should make the installation via pip more robust.

On Windows the usage of entry_points will install a wrapper executable
for the script that chooses the proper python executable. This
essentially makes the script run correctly when called via `git
filter-repo` (direct execution via `git-filter-repo` was already fine
before).

This fixes an issue on Windows, where the git-installation will choose a
different python executable than the one indicated by the installation
via `pip{x,3} install`.

Signed-off-by: Benjamin Motz <benjamin.motz@mailbox.org>

git-filter-repo

@@ -3951,7 +3951,7 @@ class RepoFilter(object):
     print(_("Completely finished after {:.2f} seconds.")
           .format(time.time()-start))
 
-if __name__ == '__main__':
+def main():
   setup_gettext()
   args = FilteringOptions.parse_args(sys.argv[1:])
   if args.analyze:
@@ -3959,3 +3959,6 @@ if __name__ == '__main__':
   else:
     filter = RepoFilter(args)
     filter.run()
+
+if __name__ == '__main__':
+  main()

release/setup.py

@@ -1,8 +1,21 @@
 from setuptools import setup
 import os
-for f in ['git-filter-repo', 'git_filter_repo.py', 'README.md']:
+
+
+def link_parent(src, target=None):
+    if target is None:
+        target = src
     try:
-        os.symlink("../"+f, f)
+        os.symlink(os.path.join("..", src), target)
     except FileExistsError:
         pass
-setup(use_scm_version=dict(root="..", relative_to=__file__))
+
+
+for f in ['git-filter-repo', 'README.md']:
+    link_parent(f)
+
+link_parent('git-filter-repo', 'git_filter_repo.py')
+
+
+setup(use_scm_version=dict(root="..", relative_to=__file__),
+      entry_points={'console_scripts': ['git-filter-repo = git_filter_repo:main']})