update pyyaml to 6.0.1

[orcutt989]

Fixes broken pyyaml arm64 build in our CI.

[nicolasochem]

thanks

[harryttd]

i'm not sure this should be merged yet. It is a major version update of a package which seems to be a dep of another. If the code hasn't been tested we don't know what will happen.

[harryttd]

Please see my comment here: #595 (comment)
I believe we should wait for the maintainers to fix.

[orcutt989]

Please see my comment here: #595 (comment) I believe we should wait for the maintainers to fix.

Thanks @harryttd. Yes I looked at the PR and I wasn't able to understand the issue. It seems as if the arm64 build randomly stopped working for PyYAML 5.4. Could you elaborate on how the PR could be related?

This seems more relevant possibly yaml/pyyaml#724

I did some research and along with the above- the consensus seems to be to upgrade to 6.0.1.
I spoke with @nicolasochem about upgrading and he didnt think there would be issue.

Happy to wait, but we have a broken pipeline at the moment.

[orcutt989]

I see now how the Cython PR is relevant. However I dont think its going to be fixed.

yaml/pyyaml#734 (comment)

[harryttd]

Yeah.. as the days go on they don't seem to want to fix this for older versions yaml/pyyaml#731

Did you test the code to make sure it still works with the major release version?

[nicolasochem]

Did you test the code to make sure it still works with the major release version?

We are not doing anything fancy with pyyaml so I'll assume it can still parse our yaml fine.