Installing Qip dependencies in editable mode will always remove existing distribution

[buddly27]

It seems impossible to install a Python library used by Qip in editable mode without removing existing distribution:

>>> qip install -e /path/to/wiz.
debug: python -m pip install --ignore-installed --no-deps --prefix /var/folders/66/yybg1n7n0m90xltv6c356gm0000538/T/tmp8a7r61ko --no-warn-script-location --disable-pip-version-check --cache-dir /var/folders/66/yybg1n7n0m90xltv6c356gm0000538/T/tmpnpvdbbsx -e '.'
debug: Obtaining file:///Users/jeremyr/dev/github/wiz
debug: Installing collected packages: wiz-env
debug:   Found existing installation: wiz-env 3.2.5
debug:     Uninstalling wiz-env-3.2.5:
debug:       Successfully uninstalled wiz-env-3.2.5
debug:   Running setup.py develop for wiz-env
debug: Successfully installed wiz-env
debug: python /Users/jeremyr/dev/github/qip/source/qip/package_data/package_info.py wiz-env
debug: python -m pip show --disable-pip-version-check 'wiz-env' -v
debug: Dependencies: click<8,>=7 colorama<1,>=0.3.9 distro<2,>=1.5.0 packaging<18,>=17.1 pystache<1,>=0.5.4 sawmill<1,>=0.2.1 six<2,>=1.15.0 toml<1,>=0.10.1 ujson<4,>=2.0.3
Traceback (most recent call last):
  File "/Users/jeremyr/.virtualenvs/qip-p38/bin/qip", line 33, in <module>
    sys.exit(load_entry_point('qip-installer', 'console_scripts', 'qip')())
  File "/Users/jeremyr/dev/github/qip/source/qip/__main__.py", line 8, in main
    qip.command_line.main(prog_name="qip")
  File "/Users/jeremyr/.virtualenvs/qip-p38/lib/python3.8/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/Users/jeremyr/.virtualenvs/qip-p38/lib/python3.8/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/Users/jeremyr/.virtualenvs/qip-p38/lib/python3.8/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Users/jeremyr/.virtualenvs/qip-p38/lib/python3.8/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Users/jeremyr/.virtualenvs/qip-p38/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/Users/jeremyr/dev/github/qip/source/qip/command_line.py", line 178, in install
    success = qip.install(
  File "/Users/jeremyr/dev/github/qip/source/qip/__init__.py", line 122, in install
    package_mapping, overwrite = _install(
  File "/Users/jeremyr/dev/github/qip/source/qip/__init__.py", line 251, in _install
    custom_definition = qip.definition.fetch_custom(package_mapping)
  File "/Users/jeremyr/dev/github/qip/source/qip/definition.py", line 91, in fetch_custom
    package_mapping["location"], package_mapping["module_name"],
KeyError: 'location'

It seems to be due to Pip not taking the --ignore-installed option into account when installing packages in editable mode:
https://stackoverflow.com/questions/64108932/pip-install-in-editable-mode-always-uninstall-existing-distribution

[buddly27]

Traceback is due to another issue:
#13