extensions: make `hg nonexistent` not crash with PyOxidizer
When running `hg nonexistent`, we try to look for extensions that
provide that command. We do that by looking for files in the
`hgext.__file__` directory. However, PyOxidizer doesn't provide a
`__file__`, so we crash when running with PyOxidizer.
We should be able to look for the command in built-in extensions, but
we seem to already have code for skipping the scan when running in a
frozen binary, so I just modified that code instead.
By the way, it also seems like we should be able to search for
extensions in the `hgext3rd` module, but we don't do that yet either
(before or after this patch).
Differential Revision: https://phab.mercurial-scm.org/D8750
--- a/mercurial/extensions.py Thu Jul 09 12:52:04 2020 +0200
+++ b/mercurial/extensions.py Tue Jul 14 11:28:06 2020 -0700
@@ -706,12 +706,17 @@
'''find paths of disabled extensions. returns a dict of {name: path}'''
import hgext
- extpath = os.path.dirname(
- os.path.abspath(pycompat.fsencode(hgext.__file__))
- )
- try: # might not be a filesystem path
- files = os.listdir(extpath)
- except OSError:
+ # The hgext might not have a __file__ attribute (e.g. in PyOxidizer) and
+ # it might not be on a filesystem even if it does.
+ if util.safehasattr(hgext, '__file__'):
+ extpath = os.path.dirname(
+ os.path.abspath(pycompat.fsencode(hgext.__file__))
+ )
+ try:
+ files = os.listdir(extpath)
+ except OSError:
+ return {}
+ else:
return {}
exts = {}