Error compiling langchain with pytorch CPU index URL

[silb-saxobank]

Compiling langchain with the pytorch CPU index URL gives an error:

thread 'main' panicked at crates/uv-resolver/src/resolution.rs:230:50:
no entry found for key

MWE:

echo langchain > requirements.txt && RUST_BACKTRACE=full uv pip compile --verbose -o requirements.out requirements.txt --extra-index-url "https://download.pytorch.org/whl/cpu"

This only (?) seems to occur with this index-url, not with any other random index-url I tested.
If I use pip-tools it seems to work fine.

Running in WSL2 with uv 0.1.17

Am I missing something obvious here?
Of course, in this MWE I can remove the extra-index-url, but in my original requirements I also need pytorch-cpu and still get this error.

Thanks in advance for the help, and thanks for creating this really cool tool!

[silb-saxobank]

Could be related to #1248 ?

[silb-saxobank]

I'm also getting an issue when trying to compile a specific version of the requests library with the extra index URL:

echo requests==2.31.0 > requirements.txt && RUST_BACKTRACE=full uv pip compile --verbose -o requirements.out requirements.txt --extra-index-url "https://download.pytorch.org/whl/cpu"

which outputs:

  × No solution found when resolving dependencies:
  ╰─▶ Because there is no version of requests==2.31.0 and you require requests==2.31.0, we can conclude that the
      requirements are unsatisfiable.

And if I remove the extra index URL it works fine.

[konstin]

Langchain has been fixed in #2360, could you try running from main if that fixes your problem, too?

[charliermarsh]

I suspect the requests issue is that requests exists on https://download.pytorch.org/whl/cpu, but not at that version. We stop at the first index that contains the dependency.

[charliermarsh]

Closing in favor of some other issues. The no entry found for key is fixed in the latest release. The "requests not found" is discussed in detail here: #171.