The with_wheel fixture doesn't have a value and isn't ever referenced
within a test function.

To avoid typing it every test function, change tests to use
pytest.mark.usefixture. It will no longer appear as an argument.

https://docs.pytest.org/en/latest/how-to/fixtures.html#use-fixtures-in-classes-and-modules-with-usefixtures

Unused since 6b541457 when the last test
method was removed.

Removing the class avoids the need to add type annotations.

Use pyupgrade to convert simple string formatting to use f-string
syntax. pyupgrade is intentionally timid and will not create an f-string
if it would make the expression longer or if the substitution parameters
are anything but simple names or dotted names.

Unnecessary since dropping Python 2 support. In Python 3, all classes
are new style classes.

Canonicalize name in check_if_exists

The previous implementation uses pkg_resources.get_distribution(), which
does not canonicalize the package name correctly, and fails when
combined with pip's own get_distribution(), which does canonicalize
names. This makes InstallRequirement.check_if_exists() only use pip's
own canonicalization logic so different package name forms are matched
as expected.

Make more tests run with with_wheel and test
that a .dist-info directory is created.

This check only applies to explicit requirements since we avoid
downloading the dist from finder altogether when there is a matching
installation (although the check wouldn’t change the behaviour in that
case anyway).

We can do this when we build the `ExplicitRequirement` instead, like how
we did for `SpecifierRequirement`, but that would require us to resolve
the direct requirement’s version eagerly, which I don’t want to.

The implemented approach checks the version only after resolution, at
which point the distribution is already built anyway and the operation
is cheap.

=================================== FAILURES ===================================
_______________________________ test_freeze_path _______________________________
tmpdir = Path('/tmp/pytest-of-mockbuild/pytest-0/test_freeze_path0')
script = <tests.lib.PipTestEnvironment object at 0x7fe950a4caf0>
data = <tests.lib.TestData object at 0x7fe950a4cc10>
    def test_freeze_path(tmpdir, script, data):
        """
        Test freeze with --path.
        """
>       script.pip('install', '--find-links', data.find_links,
                   '--target', tmpdir, 'simple==2.0')
tests/functional/test_freeze.py:712:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
tests/lib/__init__.py:593: in run
    _check_stderr(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
stderr = "WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'N...t at 0x7fe6435ef280>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/\n"
allow_stderr_warning = False, allow_stderr_error = False
    def _check_stderr(
        stderr, allow_stderr_warning, allow_stderr_error,
    ):
        """
        Check the given stderr for logged warnings and errors.

        :param stderr: stderr output as a string.
        :param allow_stderr_warning: whether a logged warning (or deprecation
            message) is allowed. Must be True if allow_stderr_error is True.
        :param allow_stderr_error: whether a logged error is allowed.
        """
        assert not (allow_stderr_error and not allow_stderr_warning)

        lines = stderr.splitlines()
        for line in lines:
            # First check for logging errors, which we don't allow during
            # tests even if allow_stderr_error=True (since a logging error
            # would signal a bug in pip's code).
            #    Unlike errors logged with logger.error(), these errors are
            # sent directly to stderr and so bypass any configured log formatter.
            # The "--- Logging error ---" string is used in Python 3.4+, and
            # "Logged from file " is used in Python 2.
            if (line.startswith('--- Logging error ---') or
                    line.startswith('Logged from file ')):
                reason = 'stderr has a logging error, which is never allowed'
                msg = make_check_stderr_message(stderr, line=line, reason=reason)
                raise RuntimeError(msg)
            if allow_stderr_error:
                continue

            if line.startswith('ERROR: '):
                reason = (
                    'stderr has an unexpected error '
                    '(pass allow_stderr_error=True to permit this)'
                )
                msg = make_check_stderr_message(stderr, line=line, reason=reason)
                raise RuntimeError(msg)
            if allow_stderr_warning:
                continue

            if (line.startswith('WARNING: ') or
                    line.startswith(DEPRECATION_MSG_PREFIX)):
                reason = (
                    'stderr has an unexpected warning '
                    '(pass allow_stderr_warning=True to permit this)'
                )
                msg = make_check_stderr_message(stderr, line=line, reason=reason)
>               raise RuntimeError(msg)
E               RuntimeError: stderr has an unexpected warning (pass allow_stderr_warning=True to permit this):
E                Caused by line: "WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fe64364c850>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/"
E                Complete stderr: WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fe64364c850>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
E               WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fe64364cdc0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
E               WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fe64364cf70>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
E               WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fe6435ef130>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
E               WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fe6435ef280>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
tests/lib/__init__.py:404: RuntimeError
________________________ test_freeze_path_exclude_user _________________________
tmpdir = Path('/tmp/pytest-of-mockbuild/pytest-0/test_freeze_path_exclude_user0')
script = <tests.lib.PipTestEnvironment object at 0x7fe950ec8fa0>
data = <tests.lib.TestData object at 0x7fe950ec8a30>
    def test_freeze_path_exclude_user(tmpdir, script, data):
        """
        Test freeze with --path and make sure packages from --user are not picked
        up.
        """
        script.pip_install_local('--find-links', data.find_links,
                                 '--user', 'simple2')
>       script.pip('install', '--find-links', data.find_links,
                   '--target', tmpdir, 'simple==1.0')
tests/functional/test_freeze.py:728:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
tests/lib/__init__.py:593: in run
    _check_stderr(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
stderr = "WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'N...t at 0x7f87ae751310>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/\n"
allow_stderr_warning = False, allow_stderr_error = False
    def _check_stderr(
        stderr, allow_stderr_warning, allow_stderr_error,
    ):
        """
        Check the given stderr for logged warnings and errors.

        :param stderr: stderr output as a string.
        :param allow_stderr_warning: whether a logged warning (or deprecation
            message) is allowed. Must be True if allow_stderr_error is True.
        :param allow_stderr_error: whether a logged error is allowed.
        """
        assert not (allow_stderr_error and not allow_stderr_warning)

        lines = stderr.splitlines()
        for line in lines:
            # First check for logging errors, which we don't allow during
            # tests even if allow_stderr_error=True (since a logging error
            # would signal a bug in pip's code).
            #    Unlike errors logged with logger.error(), these errors are
            # sent directly to stderr and so bypass any configured log formatter.
            # The "--- Logging error ---" string is used in Python 3.4+, and
            # "Logged from file " is used in Python 2.
            if (line.startswith('--- Logging error ---') or
                    line.startswith('Logged from file ')):
                reason = 'stderr has a logging error, which is never allowed'
                msg = make_check_stderr_message(stderr, line=line, reason=reason)
                raise RuntimeError(msg)
            if allow_stderr_error:
                continue

            if line.startswith('ERROR: '):
                reason = (
                    'stderr has an unexpected error '
                    '(pass allow_stderr_error=True to permit this)'
                )
                msg = make_check_stderr_message(stderr, line=line, reason=reason)
                raise RuntimeError(msg)
            if allow_stderr_warning:
                continue

            if (line.startswith('WARNING: ') or
                    line.startswith(DEPRECATION_MSG_PREFIX)):
                reason = (
                    'stderr has an unexpected warning '
                    '(pass allow_stderr_warning=True to permit this)'
                )
                msg = make_check_stderr_message(stderr, line=line, reason=reason)
>               raise RuntimeError(msg)
E               RuntimeError: stderr has an unexpected warning (pass allow_stderr_warning=True to permit this):
E                Caused by line: "WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f87ae7aa8e0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/"
E                Complete stderr: WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f87ae7aa8e0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
E               WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f87ae7aae50>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
E               WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f87ae751040>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
E               WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f87ae7511c0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
E               WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f87ae751310>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
tests/lib/__init__.py:404: RuntimeError
__________________________ test_freeze_path_multiple ___________________________
tmpdir = Path('/tmp/pytest-of-mockbuild/pytest-0/test_freeze_path_multiple0')
script = <tests.lib.PipTestEnvironment object at 0x7fe950b43fd0>
data = <tests.lib.TestData object at 0x7fe950b43df0>
    def test_freeze_path_multiple(tmpdir, script, data):
        """
        Test freeze with multiple --path arguments.
        """
        path1 = tmpdir / "path1"
        os.mkdir(path1)
        path2 = tmpdir / "path2"
        os.mkdir(path2)
>       script.pip('install', '--find-links', data.find_links,
                   '--target', path1, 'simple==2.0')
tests/functional/test_freeze.py:750:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
tests/lib/__init__.py:593: in run
    _check_stderr(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
stderr = "WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'N...t at 0x7f07e6253280>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/\n"
allow_stderr_warning = False, allow_stderr_error = False
    def _check_stderr(
        stderr, allow_stderr_warning, allow_stderr_error,
    ):
        """
        Check the given stderr for logged warnings and errors.

        :param stderr: stderr output as a string.
        :param allow_stderr_warning: whether a logged warning (or deprecation
            message) is allowed. Must be True if allow_stderr_error is True.
        :param allow_stderr_error: whether a logged error is allowed.
        """
        assert not (allow_stderr_error and not allow_stderr_warning)

        lines = stderr.splitlines()
        for line in lines:
            # First check for logging errors, which we don't allow during
            # tests even if allow_stderr_error=True (since a logging error
            # would signal a bug in pip's code).
            #    Unlike errors logged with logger.error(), these errors are
            # sent directly to stderr and so bypass any configured log formatter.
            # The "--- Logging error ---" string is used in Python 3.4+, and
            # "Logged from file " is used in Python 2.
            if (line.startswith('--- Logging error ---') or
                    line.startswith('Logged from file ')):
                reason = 'stderr has a logging error, which is never allowed'
                msg = make_check_stderr_message(stderr, line=line, reason=reason)
                raise RuntimeError(msg)
            if allow_stderr_error:
                continue

            if line.startswith('ERROR: '):
                reason = (
                    'stderr has an unexpected error '
                    '(pass allow_stderr_error=True to permit this)'
                )
                msg = make_check_stderr_message(stderr, line=line, reason=reason)
                raise RuntimeError(msg)
            if allow_stderr_warning:
                continue

            if (line.startswith('WARNING: ') or
                    line.startswith(DEPRECATION_MSG_PREFIX)):
                reason = (
                    'stderr has an unexpected warning '
                    '(pass allow_stderr_warning=True to permit this)'
                )
                msg = make_check_stderr_message(stderr, line=line, reason=reason)
>               raise RuntimeError(msg)
E               RuntimeError: stderr has an unexpected warning (pass allow_stderr_warning=True to permit this):
E                Caused by line: "WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f07e62ae850>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/"
E                Complete stderr: WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f07e62ae850>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
E               WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f07e62aedc0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
E               WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f07e62aef70>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
E               WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f07e6253130>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
E               WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f07e6253280>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/simple/
tests/lib/__init__.py:404: RuntimeError
_________________ test_install_no_binary_builds_pep_517_wheel __________________
script = <tests.lib.PipTestEnvironment object at 0x7fe9509f4e20>
data = <tests.lib.TestData object at 0x7fe9509f4640>, with_wheel = None
    def test_install_no_binary_builds_pep_517_wheel(script, data, with_wheel):
        to_install = data.packages.joinpath('pep517_setup_and_pyproject')
>       res = script.pip(
            'install', '--no-binary=:all:', '-f', data.find_links, to_install
        )
tests/functional/test_install.py:1279:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <tests.lib.PipTestEnvironment object at 0x7fe9509f4e20>
args = ('python', '-m', 'pip', 'install', '--no-binary=:all:', '-f', ...)
kw = {'expect_stderr': True}
cwd = Path('/tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/scratch')
run_from = None, allow_stderr_error = False, allow_stderr_warning = False
expect_error = None
    def run(self, *args, **kw):
        """
        :param allow_stderr_error: whether a logged error is allowed in
            stderr.  Passing True for this argument implies
            `allow_stderr_warning` since warnings are weaker than errors.
        :param allow_stderr_warning: whether a logged warning (or
            deprecation message) is allowed in stderr.
        :param expect_error: if False (the default), asserts that the command
            exits with 0.  Otherwise, asserts that the command exits with a
            non-zero exit code.  Passing True also implies allow_stderr_error
            and allow_stderr_warning.
        :param expect_stderr: whether to allow warnings in stderr (equivalent
            to `allow_stderr_warning`).  This argument is an abbreviated
            version of `allow_stderr_warning` and is also kept for backwards
            compatibility.
        """
        if self.verbose:
            print('>> running %s %s' % (args, kw))

        cwd = kw.pop('cwd', None)
        run_from = kw.pop('run_from', None)
        assert not cwd or not run_from, "Don't use run_from; it's going away"
        cwd = cwd or run_from or self.cwd
        if sys.platform == 'win32':
            # Partial fix for ScriptTest.run using `shell=True` on Windows.
            args = [str(a).replace('^', '^^').replace('&', '^&') for a in args]

        # Remove `allow_stderr_error` and `allow_stderr_warning` before
        # calling run() because PipTestEnvironment doesn't support them.
        allow_stderr_error = kw.pop('allow_stderr_error', None)
        allow_stderr_warning = kw.pop('allow_stderr_warning', None)

        # Propagate default values.
        expect_error = kw.get('expect_error')
        if expect_error:
            # Then default to allowing logged errors.
            if allow_stderr_error is not None and not allow_stderr_error:
                raise RuntimeError(
                    'cannot pass allow_stderr_error=False with '
                    'expect_error=True'
                )
            allow_stderr_error = True

        elif kw.get('expect_stderr'):
            # Then default to allowing logged warnings.
            if allow_stderr_warning is not None and not allow_stderr_warning:
                raise RuntimeError(
                    'cannot pass allow_stderr_warning=False with '
                    'expect_stderr=True'
                )
            allow_stderr_warning = True

        if allow_stderr_error:
            if allow_stderr_warning is not None and not allow_stderr_warning:
                raise RuntimeError(
                    'cannot pass allow_stderr_warning=False with '
                    'allow_stderr_error=True'
                )

        # Default values if not set.
        if allow_stderr_error is None:
            allow_stderr_error = False
        if allow_stderr_warning is None:
            allow_stderr_warning = allow_stderr_error

        # Pass expect_stderr=True to allow any stderr.  We do this because
        # we do our checking of stderr further on in check_stderr().
        kw['expect_stderr'] = True
>       result = super(PipTestEnvironment, self).run(cwd=cwd, *args, **kw)
E       AssertionError: Script returned code: 1
tests/lib/__init__.py:586: AssertionError
----------------------------- Captured stdout call -----------------------------
Script result: python -m pip install --no-binary=:all: -f file:///tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/data/packages /tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/data/packages/pep517_setup_and_pyproject
  return code: 1
-- stderr: --------------------
  ERROR: Command errored out with exit status 1:
   command: /tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/venv/bin/python /builddir/build/BUILDROOT/python-pip-19.3.1-1.fc32.noarch/usr/lib/python3.8/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/tmp/pip-build-env-ntp1m4dh/overlay --no-warn-script-location --no-binary :all: --only-binary :none: -i https://pypi.org/simple --find-links file:///tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/data/packages -- setuptools
       cwd: None
  Complete output (28 lines):
  Looking in links: file:///tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/data/packages
  WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f7234ef1e50>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
  WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f7234e92040>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
  WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f7234e921c0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
  WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f7234e92340>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
  WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f7234e924c0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/setuptools/
  Processing /tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/data/packages/setuptools-0.9.6.tar.gz
      ERROR: Command errored out with exit status 1:
       command: /tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/venv/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/tmp/pip-install-b_6lf4z6/setuptools/setup.py'"'"'; __file__='"'"'/tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/tmp/pip-install-b_6lf4z6/setuptools/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/tmp/pip-install-b_6lf4z6/setuptools/pip-egg-info
           cwd: /tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/tmp/pip-install-b_6lf4z6/setuptools/
      Complete output (15 lines):
      Traceback (most recent call last):
        File "<string>", line 1, in <module>
        File "/tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/tmp/pip-install-b_6lf4z6/setuptools/setuptools/__init__.py", line 2, in <module>
          from setuptools.extension import Extension, Library
        File "/tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/tmp/pip-install-b_6lf4z6/setuptools/setuptools/extension.py", line 5, in <module>
          from setuptools.dist import _get_unpatched
        File "/tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/tmp/pip-install-b_6lf4z6/setuptools/setuptools/dist.py", line 7, in <module>
          from setuptools.command.install import install
        File "/tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/tmp/pip-install-b_6lf4z6/setuptools/setuptools/command/__init__.py", line 8, in <module>
          from setuptools.command import install_scripts
        File "/tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/tmp/pip-install-b_6lf4z6/setuptools/setuptools/command/install_scripts.py", line 3, in <module>
          from pkg_resources import Distribution, PathMetadata, ensure_directory
        File "/tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/tmp/pip-install-b_6lf4z6/setuptools/pkg_resources.py", line 1545, in <module>
          register_loader_type(importlib_bootstrap.SourceFileLoader, DefaultProvider)
      AttributeError: module 'importlib._bootstrap' has no attribute 'SourceFileLoader'
      ----------------------------------------
  ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
  ----------------------------------------
ERROR: Command errored out with exit status 1: /tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/venv/bin/python /builddir/build/BUILDROOT/python-pip-19.3.1-1.fc32.noarch/usr/lib/python3.8/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/workspace/tmp/pip-build-env-ntp1m4dh/overlay --no-warn-script-location --no-binary :all: --only-binary :none: -i https://pypi.org/simple --find-links file:///tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/data/packages -- setuptools Check the logs for full command output.
-- stdout: --------------------
Looking in links: file:///tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/data/packages
Processing /tmp/pytest-of-mockbuild/pytest-0/test_install_no_binary_builds_0/data/packages/pep517_setup_and_pyproject
  Installing build dependencies: started
  Installing build dependencies: finished with status 'error'
_______________________ test_config_file_override_stack ________________________
script = <tests.lib.PipTestEnvironment object at 0x7fe950d9b7f0>
virtualenv = <VirtualEnvironment /tmp/pytest-of-mockbuild/pytest-0/test_config_file_override_stac0/workspace/venv>
    def test_config_file_override_stack(script, virtualenv):
        """
        Test config files (global, overriding a global config with a
        local, overriding all with a command line flag).

        """
        fd, config_file = tempfile.mkstemp('-pip.cfg', 'test-')
        try:
>           _test_config_file_override_stack(script, virtualenv, config_file)
tests/functional/test_install_config.py:144:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
tests/functional/test_install_config.py:172: in _test_config_file_override_stack
    result = script.pip(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <tests.lib.PipTestEnvironment object at 0x7fe950d9b7f0>
args = ('python', '-m', 'pip', 'install', '-vvv', '--index-url', ...)
kw = {'expect_stderr': True}
cwd = Path('/tmp/pytest-of-mockbuild/pytest-0/test_config_file_override_stac0/workspace/scratch')
run_from = None, allow_stderr_error = False, allow_stderr_warning = False
expect_error = None
    def run(self, *args, **kw):
        """
        :param allow_stderr_error: whether a logged error is allowed in
            stderr.  Passing True for this argument implies
            `allow_stderr_warning` since warnings are weaker than errors.
        :param allow_stderr_warning: whether a logged warning (or
            deprecation message) is allowed in stderr.
        :param expect_error: if False (the default), asserts that the command
            exits with 0.  Otherwise, asserts that the command exits with a
            non-zero exit code.  Passing True also implies allow_stderr_error
            and allow_stderr_warning.
        :param expect_stderr: whether to allow warnings in stderr (equivalent
            to `allow_stderr_warning`).  This argument is an abbreviated
            version of `allow_stderr_warning` and is also kept for backwards
            compatibility.
        """
        if self.verbose:
            print('>> running %s %s' % (args, kw))

        cwd = kw.pop('cwd', None)
        run_from = kw.pop('run_from', None)
        assert not cwd or not run_from, "Don't use run_from; it's going away"
        cwd = cwd or run_from or self.cwd
        if sys.platform == 'win32':
            # Partial fix for ScriptTest.run using `shell=True` on Windows.
            args = [str(a).replace('^', '^^').replace('&', '^&') for a in args]

        # Remove `allow_stderr_error` and `allow_stderr_warning` before
        # calling run() because PipTestEnvironment doesn't support them.
        allow_stderr_error = kw.pop('allow_stderr_error', None)
        allow_stderr_warning = kw.pop('allow_stderr_warning', None)

        # Propagate default values.
        expect_error = kw.get('expect_error')
        if expect_error:
            # Then default to allowing logged errors.
            if allow_stderr_error is not None and not allow_stderr_error:
                raise RuntimeError(
                    'cannot pass allow_stderr_error=False with '
                    'expect_error=True'
                )
            allow_stderr_error = True

        elif kw.get('expect_stderr'):
            # Then default to allowing logged warnings.
            if allow_stderr_warning is not None and not allow_stderr_warning:
                raise RuntimeError(
                    'cannot pass allow_stderr_warning=False with '
                    'expect_stderr=True'
                )
            allow_stderr_warning = True

        if allow_stderr_error:
            if allow_stderr_warning is not None and not allow_stderr_warning:
                raise RuntimeError(
                    'cannot pass allow_stderr_warning=False with '
                    'allow_stderr_error=True'
                )

        # Default values if not set.
        if allow_stderr_error is None:
            allow_stderr_error = False
        if allow_stderr_warning is None:
            allow_stderr_warning = allow_stderr_error

        # Pass expect_stderr=True to allow any stderr.  We do this because
        # we do our checking of stderr further on in check_stderr().
        kw['expect_stderr'] = True
>       result = super(PipTestEnvironment, self).run(cwd=cwd, *args, **kw)
E       AssertionError: Script returned code: 1
tests/lib/__init__.py:586: AssertionError
----------------------------- Captured stdout call -----------------------------
Script result: python -m pip install -vvv --index-url https://pypi.org/simple/ INITools
  return code: 1
-- stderr: --------------------
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f9669c3d8b0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/initools/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f9669c3da60>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/initools/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f9669c3dbe0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/initools/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f9669c3dd60>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/initools/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f966900f490>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/initools/
ERROR: Could not find a version that satisfies the requirement INITools (from versions: none)
ERROR: No matching distribution found for INITools
-- stdout: --------------------
Created temporary directory: /tmp/pytest-of-mockbuild/pytest-0/test_config_file_override_stac0/workspace/tmp/pip-ephem-wheel-cache-6gj33ens
Created temporary directory: /tmp/pytest-of-mockbuild/pytest-0/test_config_file_override_stac0/workspace/tmp/pip-req-tracker-s7_2cwgc
Created requirements tracker '/tmp/pytest-of-mockbuild/pytest-0/test_config_file_override_stac0/workspace/tmp/pip-req-tracker-s7_2cwgc'
Created temporary directory: /tmp/pytest-of-mockbuild/pytest-0/test_config_file_override_stac0/workspace/tmp/pip-install-_91mh3df
Looking in indexes: https://pypi.org/simple/
1 location(s) to search for versions of INITools:
* https://pypi.org/simple/initools/
Getting page https://pypi.org/simple/initools/
Found index url https://pypi.org/simple/
Looking up "https://pypi.org/simple/initools/" in the cache
Request header has "max_age" as 0, cache bypassed
Starting new HTTPS connection (1): pypi.org:443
Incremented Retry for (url='/simple/initools/'): Retry(total=4, connect=None, read=None, redirect=None, status=None)
Starting new HTTPS connection (2): pypi.org:443
Incremented Retry for (url='/simple/initools/'): Retry(total=3, connect=None, read=None, redirect=None, status=None)
Starting new HTTPS connection (3): pypi.org:443
Incremented Retry for (url='/simple/initools/'): Retry(total=2, connect=None, read=None, redirect=None, status=None)
Starting new HTTPS connection (4): pypi.org:443
Incremented Retry for (url='/simple/initools/'): Retry(total=1, connect=None, read=None, redirect=None, status=None)
Starting new HTTPS connection (5): pypi.org:443
Incremented Retry for (url='/simple/initools/'): Retry(total=0, connect=None, read=None, redirect=None, status=None)
Starting new HTTPS connection (6): pypi.org:443
Could not fetch URL https://pypi.org/simple/initools/: connection error: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/initools/ (Caused by NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7f9669c15b50>: Failed to establish a new connection: [Errno -2] Name or service not known')) - skipping
Given no hashes to check 0 links for project 'INITools': discarding no candidates
Cleaning up...
Removed build tracker '/tmp/pytest-of-mockbuild/pytest-0/test_config_file_override_stac0/workspace/tmp/pip-req-tracker-s7_2cwgc'
Exception information:
Traceback (most recent call last):
  File "/builddir/build/BUILDROOT/python-pip-19.3.1-1.fc32.noarch/usr/lib/python3.8/site-packages/pip/_internal/cli/base_command.py", line 153, in _main
    status = self.run(options, args)
  File "/builddir/build/BUILDROOT/python-pip-19.3.1-1.fc32.noarch/usr/lib/python3.8/site-packages/pip/_internal/commands/install.py", line 401, in run
    resolver.resolve(requirement_set)
  File "/builddir/build/BUILDROOT/python-pip-19.3.1-1.fc32.noarch/usr/lib/python3.8/site-packages/pip/_internal/legacy_resolve.py", line 202, in resolve
    self._resolve_one(requirement_set, req)
  File "/builddir/build/BUILDROOT/python-pip-19.3.1-1.fc32.noarch/usr/lib/python3.8/site-packages/pip/_internal/legacy_resolve.py", line 368, in _resolve_one
    abstract_dist = self._get_abstract_dist_for(req_to_install)
  File "/builddir/build/BUILDROOT/python-pip-19.3.1-1.fc32.noarch/usr/lib/python3.8/site-packages/pip/_internal/legacy_resolve.py", line 314, in _get_abstract_dist_for
    req.populate_link(self.finder, upgrade_allowed, self.require_hashes)
  File "/builddir/build/BUILDROOT/python-pip-19.3.1-1.fc32.noarch/usr/lib/python3.8/site-packages/pip/_internal/req/req_install.py", line 226, in populate_link
    self.link = finder.find_requirement(self, upgrade)
  File "/builddir/build/BUILDROOT/python-pip-19.3.1-1.fc32.noarch/usr/lib/python3.8/site-packages/pip/_internal/index.py", line 905, in find_requirement
    raise DistributionNotFound(
pip._internal.exceptions.DistributionNotFound: No matching distribution found for INITools
_______________________ test_no_upgrade_unless_requested _______________________
script = <tests.lib.PipTestEnvironment object at 0x7fe950d86070>
    def test_no_upgrade_unless_requested(script):
        """
        No upgrade if not specifically requested.

        """
>       script.pip('install', 'INITools==0.1')
tests/functional/test_install_upgrade.py:16:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <tests.lib.PipTestEnvironment object at 0x7fe950d86070>
args = ('python', '-m', 'pip', 'install', 'INITools==0.1')
kw = {'expect_stderr': True}
cwd = Path('/tmp/pytest-of-mockbuild/pytest-0/test_no_upgrade_unless_request0/workspace/scratch')
run_from = None, allow_stderr_error = False, allow_stderr_warning = False
expect_error = None
    def run(self, *args, **kw):
        """
        :param allow_stderr_error: whether a logged error is allowed in
            stderr.  Passing True for this argument implies
            `allow_stderr_warning` since warnings are weaker than errors.
        :param allow_stderr_warning: whether a logged warning (or
            deprecation message) is allowed in stderr.
        :param expect_error: if False (the default), asserts that the command
            exits with 0.  Otherwise, asserts that the command exits with a
            non-zero exit code.  Passing True also implies allow_stderr_error
            and allow_stderr_warning.
        :param expect_stderr: whether to allow warnings in stderr (equivalent
            to `allow_stderr_warning`).  This argument is an abbreviated
            version of `allow_stderr_warning` and is also kept for backwards
            compatibility.
        """
        if self.verbose:
            print('>> running %s %s' % (args, kw))

        cwd = kw.pop('cwd', None)
        run_from = kw.pop('run_from', None)
        assert not cwd or not run_from, "Don't use run_from; it's going away"
        cwd = cwd or run_from or self.cwd
        if sys.platform == 'win32':
            # Partial fix for ScriptTest.run using `shell=True` on Windows.
            args = [str(a).replace('^', '^^').replace('&', '^&') for a in args]

        # Remove `allow_stderr_error` and `allow_stderr_warning` before
        # calling run() because PipTestEnvironment doesn't support them.
        allow_stderr_error = kw.pop('allow_stderr_error', None)
        allow_stderr_warning = kw.pop('allow_stderr_warning', None)

        # Propagate default values.
        expect_error = kw.get('expect_error')
        if expect_error:
            # Then default to allowing logged errors.
            if allow_stderr_error is not None and not allow_stderr_error:
                raise RuntimeError(
                    'cannot pass allow_stderr_error=False with '
                    'expect_error=True'
                )
            allow_stderr_error = True

        elif kw.get('expect_stderr'):
            # Then default to allowing logged warnings.
            if allow_stderr_warning is not None and not allow_stderr_warning:
                raise RuntimeError(
                    'cannot pass allow_stderr_warning=False with '
                    'expect_stderr=True'
                )
            allow_stderr_warning = True

        if allow_stderr_error:
            if allow_stderr_warning is not None and not allow_stderr_warning:
                raise RuntimeError(
                    'cannot pass allow_stderr_warning=False with '
                    'allow_stderr_error=True'
                )

        # Default values if not set.
        if allow_stderr_error is None:
            allow_stderr_error = False
        if allow_stderr_warning is None:
            allow_stderr_warning = allow_stderr_error

        # Pass expect_stderr=True to allow any stderr.  We do this because
        # we do our checking of stderr further on in check_stderr().
        kw['expect_stderr'] = True
>       result = super(PipTestEnvironment, self).run(cwd=cwd, *args, **kw)
E       AssertionError: Script returned code: 1
tests/lib/__init__.py:586: AssertionError
----------------------------- Captured stdout call -----------------------------
Script result: python -m pip install INITools==0.1
  return code: 1
-- stderr: --------------------
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fd66cc36700>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/initools/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fd66cc36c40>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/initools/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fd66cc36dc0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/initools/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fd66cc36f40>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/initools/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fd66be48100>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/initools/
ERROR: Could not find a version that satisfies the requirement INITools==0.1 (from versions: none)
ERROR: No matching distribution found for INITools==0.1

* Run isort on the codebase

Command: isort --recursive --skip __main__.py --skip _vendor -o pip._vendor -sd THIRDPARTY -m 5 -p pip -p tests ./pip ./tests

* 📰

Add a --no-index to avoid network calls

Try to test against Python 3.5
(cherry picked from commit 91172f57)

With wheel autobuilding in place a release blocker is some granular
way to opt-out of wheels for known-bad packages. This patch introduces
two new options: --no-binary and --only-binary to control what
archives we are willing to use on both a global and per-package basis.

This also closes #2084