[TypeError]: __init__() got an unexpected keyword argument 'platform'

[Aloxaf]

• I have searched the issue tracker and believe that this is not a duplicate.

Make sure you run commands with -v flag before pasting the output.

Steps to reproduce

Create an new project and run pdm init && pdm install

Actual behavior

Synchronizing working set with lock file: 1 to add, 0 to update, 0 to remove

Installing the project as an editable package...
  ✖ Install test 0.0.0 failed
  See /tmp/pdm-install-fv9v7v7u.log for detailed debug log.
  [TypeError]: __init__() got an unexpected keyword argument 'platform'

BTW the log is empty

Expected behavior

There should be no error

Environment Information

PDM version:        0.11.1.dev20+g4557414
Python Interpreter: /usr/bin/python3 (3.9.0)
Project Root:       /tmp/test
{
  "implementation_name": "cpython",
  "implementation_version": "3.9.0",
  "os_name": "posix",
  "platform_machine": "x86_64",
  "platform_release": "5.9.11-zen2-1-zen",
  "platform_system": "Linux",
  "platform_version": "#1 ZEN SMP PREEMPT Sat, 28 Nov 2020 02:08:52 +0000",
  "python_full_version": "3.9.0",
  "platform_python_implementaiton": "CPython",
  "python_version": "3.9",
  "sys_platform": "linux"
}

---

The code which causes this bug is here:

https://github.com/frostming/pdm/blob/47dd14f92aee101cbe27122d5532717966527670/pdm/utils.py#L170-L171

I think pip may have changed its internal API.

[Aloxaf]

Oh, I noticed that there is also a permission error:

[PermissionError]: [Errno 13] Permission denied: '/usr/lib/python3.9/site-packages/_pdm_pep582.py'

Is this a feature (I must run pdm with root) or a bug (it can be put into ~/.local/lib)?

[frostming]

Oh, thanks for the catch. Will rethink the design.

Also Thanks for testing the unreleased branch, for the original issue, downgrade pip to <20.3 should do the trick