h5py minimum version update?

[hmaarrfk]

h5py minimum version update?

[shoyer]

I usually would aim to support releases from the last 1-2 years worth of releases for an upstream dependency, depending upon how stable the upstream project is and how much work it takes to support.

So I would definitely drop h5py 2.x at this point.

[kmuehlbauer]

Great, thanks @shoyer! So we can get rid of the compatibility code and streamline the CI.

That's best done in it's own PR before the performance PR's kick in. I can take care of this later today.

[hmaarrfk]

FYI, according to nep29 as far back as 3.2 should be supported:

$ nep29 h5py
| version |    date    |
|:-------:|:----------:|
|  3.7.0  | 2022-05-24 |
|  3.6.0  | 2021-11-16 |
|  3.5.0  | 2021-10-20 |
|  3.4.0  | 2021-08-23 |
|  3.3.0  | 2021-06-22 |
|  3.2.0  | 2021-03-03 |

[kmuehlbauer]

@hmaarrfk I was thinking when to drop h5py2 in #176 (comment). But maybe I'm overly concerned here and we should drop anyway?

Maybe @shoyer has some guidance here?

[kmuehlbauer]

Resolved by #194, thanks @shoyer and @hmaarrfk!