Nixpkgs: `python37Packages.pip2nix` doesn't work properly

[btlvr]

Describe the bug
I have installed the package python37Packages.pip2nix. When I try to use pip2nix, it does not work as expected, and throws an error.

To Reproduce
Steps to reproduce the behavior:

1. Install python37Packages.pip2nix
2. Run pip2nix generate wfuzz

Expected behavior
The program should not crash.

Additional context
The error:

λ pip2nix generate wfuzz                                                                                                                                                                             ~/tmp/pyp
Traceback (most recent call last):
  File "/nix/store/q19vsfmd6wdp089076dh19m4q3r5nmm3-python3.7-pip2nix-0.7.0/bin/.pip2nix-wrapped", line 11, in <module>
    sys.exit(cli())
  File "/nix/store/5xr7mcmiiqxcyd6c2540i8dyxvjrhxc0-python3.7-click-7.0/lib/python3.7/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/nix/store/5xr7mcmiiqxcyd6c2540i8dyxvjrhxc0-python3.7-click-7.0/lib/python3.7/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/nix/store/5xr7mcmiiqxcyd6c2540i8dyxvjrhxc0-python3.7-click-7.0/lib/python3.7/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/nix/store/5xr7mcmiiqxcyd6c2540i8dyxvjrhxc0-python3.7-click-7.0/lib/python3.7/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/nix/store/5xr7mcmiiqxcyd6c2540i8dyxvjrhxc0-python3.7-click-7.0/lib/python3.7/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/nix/store/q19vsfmd6wdp089076dh19m4q3r5nmm3-python3.7-pip2nix-0.7.0/lib/python3.7/site-packages/pip2nix/cli.py", line 70, in generate
    from pip2nix.main import main
  File "/nix/store/q19vsfmd6wdp089076dh19m4q3r5nmm3-python3.7-pip2nix-0.7.0/lib/python3.7/site-packages/pip2nix/main.py", line 9, in <module>
    from .generate import NixFreezeCommand
  File "/nix/store/q19vsfmd6wdp089076dh19m4q3r5nmm3-python3.7-pip2nix-0.7.0/lib/python3.7/site-packages/pip2nix/generate.py", line 12, in <module>
    from pip import cmdoptions
ImportError: cannot import name 'cmdoptions' from 'pip' (/nix/store/mi4khdvzgabzg170an0rjc61cw02sr2f-python3.7-pip-19.2.3/lib/python3.7/site-packages/pip/__init__.py)

Metadata

 - system: `"x86_64-linux"`
 - host os: `Linux 4.19.88, NixOS, 19.09.1548.3a1861fcabc (Loris)`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.3`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`

[FRidh]

In pip 18 or 19 or so that module was moved to _internal. pip2nix needs to be fixed and updated. Until then that package is broken.

[xaverdh]

There is fork, that appears to be maintained. Maybe we want to switch the nixpkgs derivation to use that?

[stale[bot]]

I marked this as stale due to inactivity. → More info