hg
author Matt Harbison <matt_harbison@yahoo.com>
Sun, 06 Dec 2020 20:38:01 -0500
changeset 46059 7740d5102760
parent 45849 c102b704edb5
child 46819 d4ba4d51f85f
permissions -rwxr-xr-x
hg: add user-site to `sys.path` on Windows to allow pip-installed extensions This has been in the TortoiseHg builds for several cycles now on Windows, and even longer on macOS. It allows an extension to be configured with `ext =` syntax, instead of requiring the full path to be specified. It's confusing for a user to be hit with messages about not being able to load extensions, based solely on which `hg.exe` is being run. This only applies to py2exe binaries, since wrapper.exe already sees into the user site area. There are no frozen binaries on other platforms (that I'm aware of), and an equivalent change will need to be made to `dispatch.py` in order to work with PyOxidizer, since it bypasses this module completely. (It also has the ability to use the `site` module, so it will look completely different.) Differential Revision: https://phab.mercurial-scm.org/D9531

#!/usr/bin/env python3
#
# mercurial - scalable distributed SCM
#
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import

import os
import sys

libdir = '@LIBDIR@'

if libdir != '@' 'LIBDIR' '@':
    if not os.path.isabs(libdir):
        libdir = os.path.join(
            os.path.dirname(os.path.realpath(__file__)), libdir
        )
        libdir = os.path.abspath(libdir)
    sys.path.insert(0, libdir)

# Make `pip install --user ...` packages available to the official Windows
# build.  Most py2 packaging installs directly into the system python
# environment, so no changes are necessary for other platforms.  The Windows
# py2 package uses py2exe, which lacks a `site` module.  Hardcode it according
# to the documentation.
if getattr(sys, 'frozen', None) == 'console_exe':
    vi = sys.version_info
    sys.path.append(
        os.path.join(
            os.environ['APPDATA'],
            'Python',
            'Python%d%d' % (vi[0], vi[1]),
            'site-packages',
        )
    )

from hgdemandimport import tracing

with tracing.log('hg script'):
    # enable importing on demand to reduce startup time
    try:
        if sys.version_info[0] < 3 or sys.version_info >= (3, 6):
            import hgdemandimport

            hgdemandimport.enable()
    except ImportError:
        sys.stderr.write(
            "abort: couldn't find mercurial libraries in [%s]\n"
            % ' '.join(sys.path)
        )
        sys.stderr.write("(check your install and PYTHONPATH)\n")
        sys.exit(-1)

    from mercurial import dispatch

    dispatch.run()