view hg @ 44277:a7f8160cc4e4

setup: don't skip the search for global hg.exe if there is no local instance The point of trying not to blindly execute `hg` on Windows is that the local hg.exe would be given precedence, and if py3 isn't on PATH, it errors out with a modal dialog. But that's not a problem if there is no local executable that could be run. The problem that I recently ran into was I upgraded the repo format to use zstd. But doing a `make clean` deletes all of the supporting libraries, causing the next run to abort with a message about not understanding the `revlog-compression-zstd` requirement. By getting rid of the local executable in the previous commit when cleaning, we avoid leaving a broken executable around, and avoid the py3 PATH problem too. There is still a small hole in that `hg.exe` needs to be deleted before switching between py2/py3/PyOxidizer builds, because the zstd module won't load. But that seems like good hygiene anyway. Differential Revision: https://phab.mercurial-scm.org/D8038
author Matt Harbison <matt_harbison@yahoo.com>
date Tue, 28 Jan 2020 22:27:30 -0500
parents 99e231afc29c
children c102b704edb5
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#!/usr/bin/env python
#
# 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)

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()