CI and spack updates

[rbberger]

PR Summary

PR Checklist

• [ ] Code is formatted. (You can use the format_spiner make target.)
• [ ] Adds a test for any bugs fixed. Adds tests for new features.
• [ ] If preparing for a new release, update the version in cmake.

[rbberger]

@Yurlungur this is ready. There is still a minor performance issue that I want to investigate, but you can use this for now.

[Yurlungur]

Sounds good. Thanks @rbberger !