run-tests: stuff a `python3.exe` into the test bin directory on Windows
Windows doesn't have `python3.exe` as part of the python.org distribution, and
that broke every script with a shebang after c102b704edb5. Windows itself
provides a `python3.exe` app execution alias[1], but it is some sort of reparse
point that MSYS is incapable of handling[2]. When run by MSYS, it simply prints
$ python3 -V
- Cannot open
That in turn caused every `hghave` check, and test that invokes shebang scripts
directly, to fail. Rather than try to patch up every script call to be invoked
with `$PYTHON` (and regress when non Windows developers forget), copying the
executable into the test binary directory with the new name just works. Since
this directory is prepended to the system PATH value, it also overrides the
broken execution alias. (The `_tmpbindir` is used instead of `_bindir` because
the latter causes python3.exe to be copied into the repo next to hg.exe when
`test-run-tests.t` runs. Something runs with this version of the executable and
subsequent runs of `run-tests.py` inside `test-run-tests.t` try to copy over it
while it is in use, and fail. This avoids the failures and the clutter.)
I didn't conditionalize this on py3 because `python3.exe` needs to be present
(for the shebangs) even when running py2 tests. It shouldn't matter to these
simple scripts, and I think the intention is to make the test runner use py3
always, even if testing a py2 build. For now, still supporting py2 is helping
to clean up the mess that is py3 tests.
[1] https://stackoverflow.com/a/57168165
[2] https://stackoverflow.com/questions/59148628/solved-unable-to-run-python-3-7-on-windows-10-permission-denied#comment104524397_59148666
Differential Revision: https://phab.mercurial-scm.org/D9543
# fetch.py - pull and merge remote changes
#
# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
'''pull, update and merge in one command (DEPRECATED)'''
from __future__ import absolute_import
from mercurial.i18n import _
from mercurial.node import short
from mercurial import (
cmdutil,
error,
exchange,
hg,
lock,
pycompat,
registrar,
util,
)
from mercurial.utils import dateutil
release = lock.release
cmdtable = {}
command = registrar.command(cmdtable)
# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
# be specifying the version(s) of Mercurial they are tested with, or
# leave the attribute unspecified.
testedwith = b'ships-with-hg-core'
@command(
b'fetch',
[
(
b'r',
b'rev',
[],
_(b'a specific revision you would like to pull'),
_(b'REV'),
),
(b'', b'edit', None, _(b'invoke editor on commit messages')),
(b'', b'force-editor', None, _(b'edit commit message (DEPRECATED)')),
(b'', b'switch-parent', None, _(b'switch parents when merging')),
]
+ cmdutil.commitopts
+ cmdutil.commitopts2
+ cmdutil.remoteopts,
_(b'hg fetch [SOURCE]'),
helpcategory=command.CATEGORY_REMOTE_REPO_MANAGEMENT,
)
def fetch(ui, repo, source=b'default', **opts):
"""pull changes from a remote repository, merge new changes if needed.
This finds all changes from the repository at the specified path
or URL and adds them to the local repository.
If the pulled changes add a new branch head, the head is
automatically merged, and the result of the merge is committed.
Otherwise, the working directory is updated to include the new
changes.
When a merge is needed, the working directory is first updated to
the newly pulled changes. Local changes are then merged into the
pulled changes. To switch the merge order, use --switch-parent.
See :hg:`help dates` for a list of formats valid for -d/--date.
Returns 0 on success.
"""
opts = pycompat.byteskwargs(opts)
date = opts.get(b'date')
if date:
opts[b'date'] = dateutil.parsedate(date)
parent = repo.dirstate.p1()
branch = repo.dirstate.branch()
try:
branchnode = repo.branchtip(branch)
except error.RepoLookupError:
branchnode = None
if parent != branchnode:
raise error.Abort(
_(b'working directory not at branch tip'),
hint=_(b"use 'hg update' to check out branch tip"),
)
wlock = lock = None
try:
wlock = repo.wlock()
lock = repo.lock()
cmdutil.bailifchanged(repo)
bheads = repo.branchheads(branch)
bheads = [head for head in bheads if len(repo[head].children()) == 0]
if len(bheads) > 1:
raise error.Abort(
_(
b'multiple heads in this branch '
b'(use "hg heads ." and "hg merge" to merge)'
)
)
other = hg.peer(repo, opts, ui.expandpath(source))
ui.status(
_(b'pulling from %s\n') % util.hidepassword(ui.expandpath(source))
)
revs = None
if opts[b'rev']:
try:
revs = [other.lookup(rev) for rev in opts[b'rev']]
except error.CapabilityError:
err = _(
b"other repository doesn't support revision lookup, "
b"so a rev cannot be specified."
)
raise error.Abort(err)
# Are there any changes at all?
modheads = exchange.pull(repo, other, heads=revs).cgresult
if modheads == 0:
return 0
# Is this a simple fast-forward along the current branch?
newheads = repo.branchheads(branch)
newchildren = repo.changelog.nodesbetween([parent], newheads)[2]
if len(newheads) == 1 and len(newchildren):
if newchildren[0] != parent:
return hg.update(repo, newchildren[0])
else:
return 0
# Are there more than one additional branch heads?
newchildren = [n for n in newchildren if n != parent]
newparent = parent
if newchildren:
newparent = newchildren[0]
hg.clean(repo, newparent)
newheads = [n for n in newheads if n != newparent]
if len(newheads) > 1:
ui.status(
_(
b'not merging with %d other new branch heads '
b'(use "hg heads ." and "hg merge" to merge them)\n'
)
% (len(newheads) - 1)
)
return 1
if not newheads:
return 0
# Otherwise, let's merge.
err = False
if newheads:
# By default, we consider the repository we're pulling
# *from* as authoritative, so we merge our changes into
# theirs.
if opts[b'switch_parent']:
firstparent, secondparent = newparent, newheads[0]
else:
firstparent, secondparent = newheads[0], newparent
ui.status(
_(b'updating to %d:%s\n')
% (repo.changelog.rev(firstparent), short(firstparent))
)
hg.clean(repo, firstparent)
p2ctx = repo[secondparent]
ui.status(
_(b'merging with %d:%s\n') % (p2ctx.rev(), short(secondparent))
)
err = hg.merge(p2ctx, remind=False)
if not err:
# we don't translate commit messages
message = cmdutil.logmessage(ui, opts) or (
b'Automated merge with %s' % util.removeauth(other.url())
)
editopt = opts.get(b'edit') or opts.get(b'force_editor')
editor = cmdutil.getcommiteditor(edit=editopt, editform=b'fetch')
n = repo.commit(
message, opts[b'user'], opts[b'date'], editor=editor
)
ui.status(
_(b'new changeset %d:%s merges remote changes with local\n')
% (repo.changelog.rev(n), short(n))
)
return err
finally:
release(lock, wlock)