nchash dependency

[marshallward]

This is more of a discussion point, wanted to get some feedback.

yamanifest is a very lightweight module, except for this one dependency on nchash. Because of nchash, we need both python-netCDF4 and numpy, which are both very much not lightweight modules.

In particular, numpy installs are big and slow, and can make it hard to keep things lightweight. (e.g it's ~80M if I install to $HOME/.local,).

Mostly I wanted to see how much nchash is used. But also, what do you think of making it an optional hash rather than mandatory?

[aidanheerdegen]

Absolutely. Don't really use it anymore, but not sure how much work it would be to make it optional. Happy to take PRs!

:)