Error in case conda-lock is started from another drive than the default temporary directory lies on

[wagnerpeer]

Hi there

I am using conda-lock for a while now and I am experiencing issues since the update to the new major version.

Issue

If I run conda-lock from a path where the drive is different to the drive from the path of the lockfile I want to generate, the process crashes with a ValueError: Paths don't have the same drive.

Environment

conda-lock version installed: 1.0.2=pyhd8ed1ab_0
python version: 3.8.10
System used: Windows 10 Enterprise 20H2

Details

I am using a full build-recipe for conda-build, a meta.yaml file as source.

The invocation is equivalent to:
conda lock -p win-64 --file E:\recipe\meta.yaml --lockfile C:\Temp\lock.lock

The issue lies in conda_lock\common.py, line 122, in the function relative_path. There is an implicit assumption, that the source and target paths have a common drive.

All 1.x.x versions show this behavior, whereas the last prior version 0.13.2 is working as expected.

[mariusvniekerk]

Can you provide the stack trace please? I don't have ready access to a windows machine with >1 drive on it.

[wagnerpeer]

Deleted original message as it contained the wrong stack trace.

[mariusvniekerk]

That stack trace has nothing to do with relative path?

[wagnerpeer]

Sorry. Mixed this with the other issue I filed yesterday. 🙈

C:\Users\Username\Miniconda3\lib\site-packages\setuptools\command\install.py:34: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools.
  warnings.warn(
Locking dependencies for ['win-64']...
INFO:conda_lock.conda_solver:win-64 using specs ['python >=3.0']
Traceback (most recent call last):
  File "C:\Users\Username\Miniconda3\Scripts\conda-lock-script.py", line 9, in <module>
    sys.exit(main())
  File "C:\Users\Username\Miniconda3\lib\site-packages\click\core.py", line 1137, in __call__
    return self.main(*args, **kwargs)
  File "C:\Users\Username\Miniconda3\lib\site-packages\click\core.py", line 1062, in main
    rv = self.invoke(ctx)
  File "C:\Users\Username\Miniconda3\lib\site-packages\click\core.py", line 1668, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "C:\Users\Username\Miniconda3\lib\site-packages\click\core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "C:\Users\Username\Miniconda3\lib\site-packages\click\core.py", line 763, in invoke
    return __callback(*args, **kwargs)
  File "C:\Users\Username\Miniconda3\lib\site-packages\click\decorators.py", line 26, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "C:\Users\Username\Miniconda3\lib\site-packages\conda_lock\conda_lock.py", line 1166, in lock
    lock_func(
  File "C:\Users\Username\Miniconda3\lib\site-packages\conda_lock\conda_lock.py", line 936, in run_lock
    make_lock_files(
  File "C:\Users\Username\Miniconda3\lib\site-packages\conda_lock\conda_lock.py", line 388, in make_lock_files
    lock_content = lock_content | create_lockfile_from_spec(
  File "C:\Users\Username\Miniconda3\lib\site-packages\conda_lock\conda_lock.py", line 739, in create_lockfile_from_spec
    sources=[
  File "C:\Users\Username\Miniconda3\lib\site-packages\conda_lock\conda_lock.py", line 740, in <listcomp>
    relative_path(lockfile_path.parent, source) for source in spec.sources
  File "C:\Users\Username\Miniconda3\lib\site-packages\conda_lock\common.py", line 122, in relative_path
    os.path.commonpath((source.resolve(strict=True), target.resolve(strict=True)))
  File "C:\Users\Username\Miniconda3\lib\ntpath.py", line 763, in commonpath
    raise ValueError("Paths don't have the same drive")
ValueError: Paths don't have the same drive