New resolver: can't install package with extras_require

[jcugat]

Hi! I'm testing the new resolver as explained in this blogpost (@ei8fdb @nlhkabu)

I have the following empty package with setup.py:

from setuptools import find_packages, setup

install_requires = [
    "aiohttp~=3.6.2",
]

dev_requires = [
    "pytest==5.4.1",
]


setup(
    name="myprivateandinternalpackage",
    version="0.0.1",
    packages=find_packages(),
    include_package_data=True,
    platforms="any",
    install_requires=install_requires,
    python_requires=">=3.7",
    extras_require={"dev": dev_requires},
)

If I install it with pip install --unstable-feature=resolver "." everything works correctly:

$ pip install --unstable-feature=resolver "."
Processing /Users/josepcugat/workspace/piptest
Collecting aiohttp~=3.6.2
  Using cached aiohttp-3.6.2-cp37-cp37m-macosx_10_13_x86_64.whl (642 kB)
Collecting async-timeout<4.0,>=3.0
  Using cached async_timeout-3.0.1-py3-none-any.whl (8.2 kB)
Collecting attrs>=17.3.0
  Using cached attrs-19.3.0-py2.py3-none-any.whl (39 kB)
Collecting chardet<4.0,>=2.0
  Using cached chardet-3.0.4-py2.py3-none-any.whl (133 kB)
Collecting multidict<5.0,>=4.5
  Using cached multidict-4.7.6-cp37-cp37m-macosx_10_14_x86_64.whl (48 kB)
Collecting yarl<2.0,>=1.0
  Using cached yarl-1.4.2-cp37-cp37m-macosx_10_13_x86_64.whl (125 kB)
Collecting idna>=2.0
  Using cached idna-2.9-py2.py3-none-any.whl (58 kB)
Using legacy setup.py install for myprivateandinternalpackage, since package 'wheel' is not installed.
Installing collected packages: multidict, idna, yarl, chardet, attrs, async-timeout, aiohttp, myprivateandinternalpackage
    Running setup.py install for myprivateandinternalpackage ... done
Successfully installed aiohttp-3.6.2 async-timeout-3.0.1 attrs-19.3.0 chardet-3.0.4 idna-2.9 multidict-4.7.6 myprivateandinternalpackage-0.0.1 yarl-1.4.2

But as soon as I add the dev extras like this pip install --unstable-feature=resolver ".[dev]" it fails:

$ pip install --unstable-feature=resolver ".[dev]"
Processing /Users/josepcugat/workspace/piptest
ERROR: Could not find a version that satisfies the requirement myprivateandinternalpackage==0.0.1 (from myprivateandinternalpackage[dev])
ERROR: No matching distribution found for myprivateandinternalpackage

Version information:

$ python -V
Python 3.7.6
$ pip -V
pip 20.2b1 from /Users/josepcugat/.pyenv/versions/3.7.6/envs/piptest/lib/python3.7/site-packages/pip (python 3.7)
$ pip list
Package    Version
---------- -------
pip        20.2b1
setuptools 46.4.0

It might be a duplicate of #8150 but don't know enough to confirm it.

[uranusjr]

Can you try whether the master works here? I think #8291 may have solved this. The master can be installed with the following command:

python -m pip install -U "pip @ git+https://github.com/pypa/pip.git"

[jcugat]

Yes, that works! Thanks @uranusjr 👏

Output for reference

$ python -m pip install -U "pip @ git+https://github.com/pypa/pip.git"
Looking in indexes: https://josepcugat:****@artifactory.skyscannertools.net/artifactory/api/pypi/pypi/simple, https://pypi.python.org/simple/
Collecting pip@ git+https://github.com/pypa/pip.git
  Cloning https://github.com/pypa/pip.git to /private/var/folders/45/0xpqxx110_75h3m1086vmrq40000gp/T/pip-install-9b54kv29/pip
  Running command git clone -q https://github.com/pypa/pip.git /private/var/folders/45/0xpqxx110_75h3m1086vmrq40000gp/T/pip-install-9b54kv29/pip
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
Building wheels for collected packages: pip
  Building wheel for pip (PEP 517) ... done
  Created wheel for pip: filename=pip-20.2.dev1-py2.py3-none-any.whl size=1495854 sha256=e70710cf5683f4bcf21c694685163f232cecd7c493ed636651c202e109c4f6bf
  Stored in directory: /private/var/folders/45/0xpqxx110_75h3m1086vmrq40000gp/T/pip-ephem-wheel-cache-sizzyhr4/wheels/78/23/38/69fd32b3e89cb27e0fcecb586a68db700444351bc9b75ff96d
Successfully built pip
Installing collected packages: pip
  Attempting uninstall: pip
    Found existing installation: pip 20.2b1
    Uninstalling pip-20.2b1:
      Successfully uninstalled pip-20.2b1
Successfully installed pip-20.2.dev1
$ pip -V
pip 20.2.dev1 from /Users/josepcugat/.pyenv/versions/piptest/lib/python3.7/site-packages/pip (python 3.7)
$ pip list
Package    Version
---------- ---------
pip        20.2.dev1
setuptools 46.4.0
$ pip install --unstable-feature=resolver ".[dev]"
Looking in indexes: https://josepcugat:****@artifactory.skyscannertools.net/artifactory/api/pypi/pypi/simple, https://pypi.python.org/simple/
Processing /Users/josepcugat/workspace/piptest
Collecting aiohttp~=3.6.2
  Using cached aiohttp-3.6.2-cp37-cp37m-macosx_10_13_x86_64.whl (642 kB)
Collecting pytest==5.4.1
  Downloading pytest-5.4.1-py3-none-any.whl (246 kB)
     |████████████████████████████████| 246 kB 469 kB/s
Collecting async-timeout<4.0,>=3.0
  Using cached async_timeout-3.0.1-py3-none-any.whl (8.2 kB)
Collecting pluggy<1.0,>=0.12
  Downloading pluggy-0.13.1-py2.py3-none-any.whl (18 kB)
Collecting attrs>=17.3.0
  Using cached attrs-19.3.0-py2.py3-none-any.whl (39 kB)
Collecting chardet<4.0,>=2.0
  Using cached chardet-3.0.4-py2.py3-none-any.whl (133 kB)
Collecting py>=1.5.0
  Downloading py-1.8.1-py2.py3-none-any.whl (83 kB)
     |████████████████████████████████| 83 kB 4.5 MB/s
Collecting wcwidth
  Downloading wcwidth-0.1.9-py2.py3-none-any.whl (19 kB)
Collecting multidict<5.0,>=4.5
  Using cached multidict-4.7.6-cp37-cp37m-macosx_10_14_x86_64.whl (48 kB)
Collecting yarl<2.0,>=1.0
  Using cached yarl-1.4.2-cp37-cp37m-macosx_10_13_x86_64.whl (125 kB)
Collecting idna>=2.0
  Using cached idna-2.9-py2.py3-none-any.whl (58 kB)
Collecting more-itertools>=4.0.0
  Downloading more_itertools-8.3.0-py3-none-any.whl (44 kB)
     |████████████████████████████████| 44 kB 6.0 MB/s
Collecting importlib-metadata>=0.12
  Using cached importlib_metadata-1.6.0-py2.py3-none-any.whl (30 kB)
Collecting zipp>=0.5
  Using cached zipp-3.1.0-py3-none-any.whl (4.9 kB)
Collecting packaging
  Downloading packaging-20.4-py2.py3-none-any.whl (37 kB)
Collecting six
  Using cached six-1.15.0-py2.py3-none-any.whl (10 kB)
Collecting pyparsing>=2.0.2
  Downloading pyparsing-2.4.7-py2.py3-none-any.whl (67 kB)
     |████████████████████████████████| 67 kB 7.3 MB/s
Using legacy setup.py install for myprivateandinternalpackage, since package 'wheel' is not installed.
Installing collected packages: zipp, multidict, idna, yarl, six, pyparsing, importlib-metadata, chardet, attrs, async-timeout, wcwidth, py, pluggy, packaging, more-itertools, aiohttp, pytest, myprivateandinternalpackage
    Running setup.py install for myprivateandinternalpackage ... done
Successfully installed aiohttp-3.6.2 async-timeout-3.0.1 attrs-19.3.0 chardet-3.0.4 idna-2.9 importlib-metadata-1.6.0 more-itertools-8.3.0 multidict-4.7.6 myprivateandinternalpackage-0.0.1 packaging-20.4 pluggy-0.13.1 py-1.8.1 pyparsing-2.4.7 pytest-5.4.1 six-1.15.0 wcwidth-0.1.9 yarl-1.4.2 zipp-3.1.0