Thorsten Beier

Also patches from the [freeimage-feedstock](https://github.com/conda-forge/freeimage-feedstock) fail.

closing since #2235 adds h5py

> At this point I think I'm stuck. The package builds, but then we get loads of errors deep in HDF5. There are plenty of suspicious warnings earlier on, but...

@talmo I hope I will find some time to debug this, but cannot promise to do It this week!

closing this since #2235 landed (#2235 is very much based on this PR) Thanks for your work and sorry for the long time it took to get h5py on emscripten-forge

@LiamBindle unfortunately I dont know much about voici, but hope that @martinRenou or @jtpio can help