Cannot install from sourcedist

Comienza reproduciendo el comando pip install ipykernel --no-binary :all: e inspecciona el fallo del aislamiento de compilación durante la instalación de flit. El issue estará completo cuando la distribución de código fuente de ipykernel se instale correctamente con el aislamiento de compilación habilitado.

This appears to fail with flit (even if flit is installed)

Disabling build isolation with --no-build-isolation appears to be fixing it if flit is already installed in the environment.

cc @takluyver

>>> pip install ipykernel --no-binary :all:
Collecting ipykernel
  Using cached https://files.pythonhosted.org/packages/b1/4e/288d4f30d1f121809a0f0df78373ef8b2d9eea9d7eb879cddb0b074af4d1/ipykernel-5.1.3.tar.gz
  Installing build dependencies ... error
  ERROR: Complete output from command /home/sylvain/miniconda3/bin/python /home/sylvain/miniconda3/lib/python3.7/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-k0hs5oyp/overlay --no-warn-script-location --no-binary :all: --only-binary :none: -i https://pypi.org/simple -- setuptools wheel 'ipython>=5' 'jupyter_core>=4.2' jupyter_client:
  ERROR: Collecting setuptools
    Using cached https://files.pythonhosted.org/packages/f4/d5/a6c19dcbcbc267aca376558797f036d9bcdff344c9f785fe7d0fe9a5f2a7/setuptools-41.4.0.zip
  Collecting wheel
    Using cached https://files.pythonhosted.org/packages/59/b0/11710a598e1e148fb7cbf9220fd2a0b82c98e94efbdecb299cb25e7f0b39/wheel-0.33.6.tar.gz
  Collecting ipython>=5
    Using cached https://files.pythonhosted.org/packages/89/60/acb98588d8eba96558e69d90fa54f9908b4e48f6492ff378697f0c2216e2/ipython-7.8.0.tar.gz
  Collecting jupyter_core>=4.2
    Using cached https://files.pythonhosted.org/packages/a4/47/e852cd00ae811939201b7f8118a856f2c6a52db3b31c4185ffbc098405c7/jupyter_core-4.6.0.tar.gz
  Collecting jupyter_client
    Using cached https://files.pythonhosted.org/packages/c4/cf/ccd7bc6935b60fe4470d7c209e4edde5e18058938f6e81aa0e9db5578c54/jupyter_client-5.3.4.tar.gz
  Collecting jedi>=0.10 (from ipython>=5)
    Using cached https://files.pythonhosted.org/packages/85/03/cd5a6e44a5753b4d539288d9d1f9645caac889c17dd2950292a8818f86b2/jedi-0.15.1.tar.gz
  Collecting decorator (from ipython>=5)
    Using cached https://files.pythonhosted.org/packages/ba/19/1119fe7b1e49b9c8a9f154c930060f37074ea2e8f9f6558efc2eeaa417a2/decorator-4.4.0.tar.gz
  Collecting pickleshare (from ipython>=5)
    Using cached https://files.pythonhosted.org/packages/d8/b6/df3c1c9b616e9c0edbc4fbab6ddd09df9535849c64ba51fcb6531c32d4d8/pickleshare-0.7.5.tar.gz
  Collecting traitlets>=4.2 (from ipython>=5)
    Using cached https://files.pythonhosted.org/packages/75/b0/43deb021bc943f18f07cbe3dac1d681626a48997b7ffa1e7fb14ef922b21/traitlets-4.3.3.tar.gz
  Collecting prompt_toolkit<2.1.0,>=2.0.0 (from ipython>=5)
    Using cached https://files.pythonhosted.org/packages/0c/37/7ad3bf3c6dbe96facf9927ddf066fdafa0f86766237cff32c3c7355d3b7c/prompt_toolkit-2.0.10.tar.gz
  Collecting pygments (from ipython>=5)
    Using cached https://files.pythonhosted.org/packages/7e/ae/26808275fc76bf2832deb10d3a3ed3107bc4de01b85dcccbe525f2cd6d1e/Pygments-2.4.2.tar.gz
  Collecting backcall (from ipython>=5)
    Using cached https://files.pythonhosted.org/packages/84/71/c8ca4f5bb1e08401b916c68003acf0a0655df935d74d93bf3f3364b310e0/backcall-0.1.0.tar.gz
  Collecting pexpect (from ipython>=5)
    Using cached https://files.pythonhosted.org/packages/1c/b1/362a0d4235496cb42c33d1d8732b5e2c607b0129ad5fdd76f5a583b9fcb3/pexpect-4.7.0.tar.gz
  Collecting pyzmq>=13 (from jupyter_client)
    Using cached https://files.pythonhosted.org/packages/7a/d2/1eb3a994374802b352d4911f3317313a5b4ea786bc830cc5e343dad9b06d/pyzmq-18.1.0.tar.gz
  Collecting python-dateutil>=2.1 (from jupyter_client)
    Using cached https://files.pythonhosted.org/packages/ad/99/5b2e99737edeb28c71bcbec5b5dda19d0d9ef3ca3e92e3e925e7c0bb364c/python-dateutil-2.8.0.tar.gz
    Installing build dependencies: started
    Installing build dependencies: finished with status 'done'
    Getting requirements to build wheel: started
    Getting requirements to build wheel: finished with status 'done'
      Preparing wheel metadata: started
      Preparing wheel metadata: finished with status 'done'
  Collecting tornado>=4.1 (from jupyter_client)
    Using cached https://files.pythonhosted.org/packages/30/78/2d2823598496127b21423baffaa186b668f73cd91887fcef78b6eade136b/tornado-6.0.3.tar.gz
  Collecting parso>=0.5.0 (from jedi>=0.10->ipython>=5)
    Using cached https://files.pythonhosted.org/packages/21/40/615957db4d178b7504c87b1a5b85fa5945b0b4fa5f5a845e31fc7aad6018/parso-0.5.1.tar.gz
  Collecting ipython_genutils (from traitlets>=4.2->ipython>=5)
    Using cached https://files.pythonhosted.org/packages/e8/69/fbeffffc05236398ebfcfb512b6d2511c622871dca1746361006da310399/ipython_genutils-0.2.0.tar.gz
  Collecting six (from traitlets>=4.2->ipython>=5)
    Using cached https://files.pythonhosted.org/packages/dd/bf/4138e7bfb757de47d1f4b6994648ec67a51efe58fa907c1e11e350cddfca/six-1.12.0.tar.gz
  Collecting wcwidth (from prompt_toolkit<2.1.0,>=2.0.0->ipython>=5)
    Using cached https://files.pythonhosted.org/packages/55/11/e4a2bb08bb450fdbd42cc709dd40de4ed2c472cf0ccb9e64af22279c5495/wcwidth-0.1.7.tar.gz
  Collecting ptyprocess>=0.5 (from pexpect->ipython>=5)
    Using cached https://files.pythonhosted.org/packages/7d/2d/e4b8733cf79b7309d84c9081a4ab558c89d8c89da5961bf4ddb050ca1ce0/ptyprocess-0.6.0.tar.gz
    Installing build dependencies: started
    Installing build dependencies: still running...
    Installing build dependencies: finished with status 'error'
    ERROR: Complete output from command /home/sylvain/miniconda3/bin/python /home/sylvain/miniconda3/lib/python3.7/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-2yzid3qp/overlay --no-warn-script-location --no-binary :all: --only-binary :none: -i https://pypi.org/simple -- flit:
    ERROR: Collecting flit
      Using cached https://files.pythonhosted.org/packages/1f/87/9ea76ab4cdf1fd36710d9688ec36a0053067c47e753b32272f952ff206c5/flit-1.3.tar.gz
      Installing build dependencies: started
      Installing build dependencies: finished with status 'done'
      Getting requirements to build wheel: started
      Getting requirements to build wheel: finished with status 'done'
      Installing backend dependencies: started
      Installing backend dependencies: finished with status 'done'
        Preparing wheel metadata: started
        Preparing wheel metadata: finished with status 'done'
    Collecting docutils (from flit)
      Using cached https://files.pythonhosted.org/packages/93/22/953e071b589b0b1fee420ab06a0d15e5aa0c7470eb9966d60393ce58ad61/docutils-0.15.2.tar.gz
    Collecting pytoml (from flit)
      Using cached https://files.pythonhosted.org/packages/f4/ba/98ee2054a2d7b8bebd367d442e089489250b6dc2aee558b000e961467212/pytoml-0.1.21.tar.gz
    Collecting requests (from flit)
      Using cached https://files.pythonhosted.org/packages/01/62/ddcf76d1d19885e8579acb1b1df26a852b03472c0e46d2b959a714c90608/requests-2.22.0.tar.gz
    Collecting chardet<3.1.0,>=3.0.2 (from requests->flit)
      Using cached https://files.pythonhosted.org/packages/fc/bb/a5768c230f9ddb03acc9ef3f0d4a3cf93462473795d18e9535498c8f929d/chardet-3.0.4.tar.gz
    Collecting idna<2.9,>=2.5 (from requests->flit)
      Using cached https://files.pythonhosted.org/packages/ad/13/eb56951b6f7950cadb579ca166e448ba77f9d24efc03edd7e55fa57d04b7/idna-2.8.tar.gz
    Collecting urllib3!=1.25.0,!=1.25.1,<1.26,>=1.21.1 (from requests->flit)
      Using cached https://files.pythonhosted.org/packages/ff/44/29655168da441dff66de03952880c6e2d17b252836ff1aa4421fba556424/urllib3-1.25.6.tar.gz
    Collecting certifi>=2017.4.17 (from requests->flit)
      Using cached https://files.pythonhosted.org/packages/62/85/7585750fd65599e88df0fed59c74f5075d4ea2fe611deceb95dd1c2fb25b/certifi-2019.9.11.tar.gz
    Skipping bdist_wheel for flit, due to binaries being disabled for it.
    Skipping bdist_wheel for docutils, due to binaries being disabled for it.
    Skipping bdist_wheel for pytoml, due to binaries being disabled for it.
    Skipping bdist_wheel for requests, due to binaries being disabled for it.
    Skipping bdist_wheel for chardet, due to binaries being disabled for it.
    Skipping bdist_wheel for idna, due to binaries being disabled for it.
    Skipping bdist_wheel for urllib3, due to binaries being disabled for it.
    Skipping bdist_wheel for certifi, due to binaries being disabled for it.
    Installing collected packages: docutils, pytoml, chardet, idna, urllib3, certifi, requests, flit
      Running setup.py install for docutils: started
        Running setup.py install for docutils: finished with status 'done'
      Running setup.py install for pytoml: started
        Running setup.py install for pytoml: finished with status 'done'
      Running setup.py install for chardet: started
        Running setup.py install for chardet: finished with status 'done'
      Running setup.py install for idna: started
        Running setup.py install for idna: finished with status 'done'
      Running setup.py install for urllib3: started
        Running setup.py install for urllib3: finished with status 'done'
      Running setup.py install for certifi: started
        Running setup.py install for certifi: finished with status 'done'
      Running setup.py install for requests: started
        Running setup.py install for requests: finished with status 'done'
      Running setup.py install for flit: started
        Running setup.py install for flit: finished with status 'error'
        ERROR: Complete output from command /home/sylvain/miniconda3/bin/python -u -c 'import setuptools, tokenize;__file__='"'"'/tmp/pip-install-3u8xm43a/flit/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-dn9u9vvj/install-record.txt --single-version-externally-managed --prefix /tmp/pip-build-env-2yzid3qp/overlay --compile:
        ERROR: Traceback (most recent call last):
          File "<string>", line 1, in <module>
        ModuleNotFoundError: No module named 'setuptools'
        ----------------------------------------
    ERROR: Command "/home/sylvain/miniconda3/bin/python -u -c 'import setuptools, tokenize;__file__='"'"'/tmp/pip-install-3u8xm43a/flit/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-dn9u9vvj/install-record.txt --single-version-externally-managed --prefix /tmp/pip-build-env-2yzid3qp/overlay --compile" failed with error code 1 in /tmp/pip-install-3u8xm43a/flit/
    ----------------------------------------
  ERROR: Command "/home/sylvain/miniconda3/bin/python /home/sylvain/miniconda3/lib/python3.7/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-2yzid3qp/overlay --no-warn-script-location --no-binary :all: --only-binary :none: -i https://pypi.org/simple -- flit" failed with error code 1 in None
  ----------------------------------------
ERROR: Command "/home/sylvain/miniconda3/bin/python /home/sylvain/miniconda3/lib/python3.7/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-k0hs5oyp/overlay --no-warn-script-location --no-binary :all: --only-binary :none: -i https://pypi.org/simple -- setuptools wheel 'ipython>=5' 'jupyter_core>=4.2' jupyter_client" failed with error code 1 in None