state of osx-arm64

[ReimarBauer]

We got a request by a participant of the CAESAR campaign, Feb 20-April 7, if MSS can be installed on an M2 apple.

Currently this is not possible. I suggested to use our docker image, https://mss.readthedocs.io/en/stable/installation.html#docker-instance

Recently basemap with 1.3.9 was added for osx-arm64.

We have to review what blocks us to use a ARM OSX Migrator for our package, similiar to conda-forge/basemap-feedstock#123

[ReimarBauer]

The dockerimage has currently INFO: MSS Version: 8.3.2

and was updated to 8.3.3

[ReimarBauer]

tried manually https://conda-forge.org/blog/2020/10/29/macos-arm64/ which might work

conda-forge/mss-feedstock#168

There are some not on the list, so trying the bot now.
https://github.com/conda-forge/conda-forge-pinning-feedstock/blob/main/recipe/migrations/osx_arm64.txt

[ReimarBauer]

looks like we can cross compile this conda-forge/mss-feedstock#168
The question is how can we check it.

[ReimarBauer]

Another option could be
https://conda-forge.org/docs/user/tipsandtricks.html#installing-apple-intel-packages-on-apple-silicon

[ReimarBauer]

Looking on https://anaconda.org/conda-forge/pyqt/files?page=4

the first osx-arm64 is a pyqt-5.15.4 version.

Version 8.X.X can't be used with this type of processor because we need there a pinning of pyqt >=5, <5.13
This changes with version 9.

[yu71ng]

Hello,
my working laptop is also with M2 apple and I've encountered the same issue. We will have a flight campaign this summer (ORCESTRA campaign), where we would like to use MSS. Do you have a rough estimate, when this issue could be solved?

[ReimarBauer]

Hi @yu71ng
we plan to release 9.0.0 in the next weeks.
There are a few issues remaining https://github.com/Open-MSS/MSS/milestone/93

Help is welcome :)

[yu71ng]

Maybe for an in-between solution, it came to my attention to do as follows: https://stackoverflow.com/questions/71515117/how-to-set-up-a-conda-osx-64-environment-on-arm-mac

Just change the setting in the mss-environment before installing the mss software:

conda config --env --set subdir osx-64

With that, I can run mss 8.X.X. on a M2 Apple :)

[ReimarBauer]

Great @yu71ng , thx to letting us know :)

[ReimarBauer]

After the release of 8.3.5 and its cross compilation we can verify if missing packages are available.