text: Title: [BUG] Can't Install from Cached source and wheel in Container
  Body: **Describe the bug**
  I am trying to install Bottleneck as a dependency in a container using a manually created pip cache.
  
  **To Reproduce**
  To assist in reproducing the bug, please include the following:
  1. Command/code being executed
  ```
  $ cd /tmp
  $ python3 -m pip download Bottleneck -d ./ -v
  $ ls
  Bottleneck-1.3.2.tar.gz numpy-1.18.1-cp36-cp36m-manylinux1_x86_64.whl
  $ python3 -m pip install Bottleneck --find-links /tmp --no-index
  ```
  2. Python version and OS
  ```
  Docker Container FROM nvidia/cuda:10.0-cudnn7-runtime-ubuntu18.04
  Linux ab183940868d 4.19.76-linuxkit #1 SMP Thu Oct 17 19:31:58 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
  Python 3.6.9 (default, Nov  7 2019, 10:44:02)
  [GCC 8.3.0] on linux
  ```
  3. `pip` version
  ```
  pip 20.0.2 from /usr/local/lib/python3.6/dist-packages/pip (python 3.6)
  ```
  4. Output of `pip list` or `conda list`
  ```
  Package       Version
  ------------- -------
  asn1crypto    0.24.0
  cryptography  2.1.4
  idna          2.6
  keyring       10.6.0
  keyrings.alt  3.0
  numpy         1.16.0
  pip           20.0.2
  pycrypto      2.6.1
  pygobject     3.26.1
  pyxdg         0.25
  SecretStorage 2.3.1
  setuptools    39.0.1
  six           1.11.0
  wheel         0.30.0
  ```
  
  **Expected behavior**
  A clear and concise description of what you expected to happen.
  Package should install.
  
  **Additional context**
  Error output:
  ```
  Looking in links: /tmp
  Processing ./Bottleneck-1.3.2.tar.gz
    Installing build dependencies ... error
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python3 /usr/local/lib/python3.6/dist-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-1z33ubip/overlay --no-warn-script-location --no-binary :none: --only-binary :none: --no-index --find-links /tmp -- setuptools wheel 'numpy==1.13.3; python_version=='"'"'2.7'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.13.3; python_version=='"'"'3.5'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.13.3; python_version=='"'"'3.6'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.14.5; python_version=='"'"'3.7'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.17.3; python_version>='"'"'3.8'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.16.0; python_version=='"'"'2.7'"'"' and platform_system=='"'"'AIX'"'"'' 'numpy==1.16.0; python_version=='"'"'3.5'"'"' and platform_system=='"'"'AIX'"'"'' 'numpy==1.16.0; python_version=='"'"'3.6'"'"' and platform_system=='"'"'AIX'"'"'' 'numpy==1.16.0; python_version=='"'"'3.7'"'"' and platform_system=='"'"'AIX'"'"'' 'numpy==1.17.3; python_version>='"'"'3.8'"'"' and platform_system=='"'"'AIX'"'"''
         cwd: None
    Complete output (12 lines):
    Ignoring numpy: markers 'python_version == "2.7" and platform_system != "AIX"' don't match your environment
    Ignoring numpy: markers 'python_version == "3.5" and platform_system != "AIX"' don't match your environment
    Ignoring numpy: markers 'python_version == "3.7" and platform_system != "AIX"' don't match your environment
    Ignoring numpy: markers 'python_version >= "3.8" and platform_system != "AIX"' don't match your environment
    Ignoring numpy: markers 'python_version == "2.7" and platform_system == "AIX"' don't match your environment
    Ignoring numpy: markers 'python_version == "3.5" and platform_system == "AIX"' don't match your environment
    Ignoring numpy: markers 'python_version == "3.6" and platform_system == "AIX"' don't match your environment
    Ignoring numpy: markers 'python_version == "3.7" and platform_system == "AIX"' don't match your environment
    Ignoring numpy: markers 'python_version >= "3.8" and platform_system == "AIX"' don't match your environment
    Looking in links: /tmp
    ERROR: Could not find a version that satisfies the requirement setuptools (from versions: none)
    ERROR: No matching distribution found for setuptools
    ----------------------------------------
  ERROR: Command errored out with exit status 1: /usr/bin/python3 /usr/local/lib/python3.6/dist-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-1z33ubip/overlay --no-warn-script-location --no-binary :none: --only-binary :none: --no-index --find-links /tmp -- setuptools wheel 'numpy==1.13.3; python_version=='"'"'2.7'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.13.3; python_version=='"'"'3.5'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.13.3; python_version=='"'"'3.6'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.14.5; python_version=='"'"'3.7'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.17.3; python_version>='"'"'3.8'"'"' and platform_system!='"'"'AIX'"'"'' 'numpy==1.16.0; python_version=='"'"'2.7'"'"' and platform_system=='"'"'AIX'"'"'' 'numpy==1.16.0; python_version=='"'"'3.5'"'"' and platform_system=='"'"'AIX'"'"'' 'numpy==1.16.0; python_version=='"'"'3.6'"'"' and platform_system=='"'"'AIX'"'"'' 'numpy==1.16.0; python_version=='"'"'3.7'"'"' and platform_system=='"'"'AIX'"'"'' 'numpy==1.17.3; python_version>='"'"'3.8'"'"' and platform_system=='"'"'AIX'"'"'' Check the logs for full command output.
  ```
  