Pennylane-lightning dev dependency in Catalyst build

Catalyst
1

Hi there,

I’m trying to follow the minimal building from source guide for MacOS, but am running into build errors. Specifically, there appears to be a dependency on pennylane-lightning==0.41.0-dev22, and it’s not entirely clear to me how to avoid this. I have tried manually installing a specific non-dev version of these and disabling the uninstall in the Makefile, as well as modifying the PennyLane_Catalyst.egg-info/requires.txt, but neither seemed to help with the dependency error:

install Catalyst Frontend
# Uninstall pennylane before updating Catalyst, since pip will not replace two development
# versions of a package with the same version tag (e.g. 0.38-dev0).
/path/to/catalyst/.venv/bin/python3 -m pip uninstall -y pennylane
Found existing installation: PennyLane 0.40.0
Uninstalling PennyLane-0.40.0:
  Successfully uninstalled PennyLane-0.40.0
/path/to/catalyst/.venv/bin/python3 -m pip install -e . --extra-index-url https://test.pypi.org/simple 
Looking in indexes: https://pypi.org/simple, https://test.pypi.org/simple
Obtaining file:///path/to/catalyst
  Installing build dependencies ... done
  Checking if build backend supports build_editable ... done
  Getting requirements to build editable ... done
  Preparing editable metadata (pyproject.toml) ... done
Collecting pennylane==0.41.0-dev38 (from PennyLane-Catalyst==0.11.0.dev43)
  Using cached https://test-files.pythonhosted.org/packages/a2/7d/b9098fad09757f0bcf2a3c10925a7c77cbbab086f6f8c4cd9cb70671dbd1/pennylane-0.41.0.dev38-py3-none-any.whl.metadata (11 kB)
INFO: pip is looking at multiple versions of pennylane-catalyst to determine which version is compatible with other requirements. This could take a while.
ERROR: Could not find a version that satisfies the requirement pennylane-lightning==0.41.0-dev22 (from pennylane-catalyst) (from versions: 0.11.0, 0.12.0, 0.14.0, 0.15.0, 0.15.1, 0.17.0, 0.18.0, 0.19.0, 0.20.0, 0.20.1, 0.20.2, 0.21.0, 0.22.0, 0.22.1, 0.23.0, 0.24.0, 0.25.0, 0.25.1, 0.26.0, 0.26.1, 0.27.0, 0.28.0, 0.28.1, 0.28.2, 0.29.0, 0.30.0, 0.31.0, 0.32.0, 0.33.0, 0.33.1, 0.34.0, 0.35.0, 0.35.1, 0.36.0, 0.37.0, 0.38.0, 0.39.0, 0.40.0)
ERROR: No matching distribution found for pennylane-lightning==0.41.0-dev22
make: *** [frontend] Error 1
2

Hi @n-io, welcome to the Catalyst community :slight_smile:

Regarding your question, if you are building a development version of Catalyst (from main rather than from release tags), we will often pin a specific development version of lightning and/or pennylane to deal with the concurrent development of both packages, and ensure the build configuration is reproducible in the future.

Let me have a look at the specific versions you posted and get back to you! Would you mind sharing your system information?

3

From what I can tell, Lightning wheels should be available for version 0.41.0-dev22 on macOS 13 and above, both x86 and arm, for Python 3.10-3.12. See the corresponding TestPyPI page:
https://test.pypi.org/project/PennyLane-Lightning/0.41.0.dev22/#files
Does your system fall outside of these parameters?