setup: prevent setuptools from laying an egg Previously, test-hghave.t was failing on Windows (and on Linux if $FORCE_SETUPTOOLS was set) with the following: --- c:/Users/Matt/Projects/hg/tests/test-hghave.t +++ c:/Users/Matt/Projects/hg/tests/test-hghave.t.err @@ -19,7 +19,11 @@ > foo > EOF $ run-tests.py $HGTEST_RUN_TESTS_PURE test-hghaveaddon.t + warning: Testing with unexpected mercurial lib: c:\Users\Matt\Projects\hg\mercurial + (expected ...\hgtests.mu9rou\install\lib\python\mercurial) . + warning: Tested with unexpected mercurial lib: c:\Users\Matt\Projects\hg\mercurial + (expected ...\hgtests.mu9rou\install\lib\python\mercurial) Augie relayed concerns[1] about the first attempt at this, which also excluded 'install_egg_info'. All that needs to be excluded to avoid the egg and make the test work is to filter out 'bdist_egg'. (Actually, the body of this class could simply be 'pass', and 'bdist_egg' still isn't run. But that seems to magical.) Also note that prior to this (and still now), `make clean` doesn't delete the 'mercurial.egg-info' that is generated by `make install`. [1] https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-May/097668.html # no-check-commit

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from __future__ import absolute_import, print_function

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from mercurial import extensions

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def genwrapper(x):

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    def f(orig, *args, **kwds):

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        return [x] + orig(*args, **kwds)

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    f.x = x

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    return f

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def getid(wrapper):

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    return getattr(wrapper, 'x', '-')

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wrappers = [genwrapper(i) for i in range(5)]

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class dummyclass(object):

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    def getstack(self):

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        return ['orig']

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dummy = dummyclass()

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def batchwrap(wrappers):

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    for w in wrappers:

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        extensions.wrapfunction(dummy, 'getstack', w)

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        print('wrap %d: %s' % (getid(w), dummy.getstack()))

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def batchunwrap(wrappers):

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    for w in wrappers:

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        result = None

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        try:

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            result = extensions.unwrapfunction(dummy, 'getstack', w)

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            msg = str(dummy.getstack())

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        except (ValueError, IndexError) as e:

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            msg = e.__class__.__name__

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        print('unwrap %s: %s: %s' % (getid(w), getid(result), msg))

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batchwrap(wrappers + [wrappers[0]])

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batchunwrap([(wrappers[i] if i >= 0 else None)

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             for i in [3, None, 0, 4, 0, 2, 1, None]])