Pytorch-lightning: Release Pytorch Lightning as a conda package

[dangpzanco]

🚀 Feature

Please make the pytorch-lightning package available from the conda package manager. This would probably be done through conda-forge: conda install pytorch-lightning -c conda-forge

Motivation

The default way of installing Pytorch is via their conda channel, so (probably) most users of Lightning already use the conda package manager.

Conda packages provide automatic updates (conda update --all) and better package dependencies management, which could make the user's life a lot easier.

Pitch

I'd like to install pytorch-lightning and its dependencies via this command:

conda install pytorch-lightning -c conda-forge

Ideally, this wouldn't force reinstall the pytorch package from its channel to conda-forge.

Alternatives

My personal way of installing pytorch-lightning is running:
pip install --no-deps pytorch-lightning test-tube
And then conda install the missing dependencies that show up on pip check.

On version 0.5.3.x this was mandatory, since the required pytorch-lightning packages would mess up numpy and other conda packages.

[williamFalcon]

@dangpzanco agreed. Is this something you can take care of? at least the config. then we can set up what needs to happen for conda release.

[dangpzanco]

@williamFalcon I'm not sure if I'll be able to take care of this (I don't have much spare time). But if nothing comes up in a couple of weeks, I'll probably look into it.

[williamFalcon]

@Borda want to look at this for this release?

[Borda]

Depends how much time will leave, I don't have any experience with conda packaging yet...

[awaelchli]

According to @hadim it is not possible to release as conda package:
https://github.com/PyTorchLightning/pytorch-lightning/issues/199#issuecomment-588269459

[hadim]

Apparently it's possible to add pytorch packages to conda-forge following this example: https://github.com/conda-forge/staged-recipes/pull/11762

The pytorch version available on conda-forge is 1.1 CPU so tests won't pass but tests are already performed on this repo anyway.

[hadim]

See https://github.com/conda-forge/staged-recipes/pull/11778

[awaelchli]

would be great to have it in conda! Thanks hadim

[hadim]

You can close here.

[awaelchli]

we should probably add instructions in the readme.
And it does not seem to work on windows but that could be because... Windows.