Why -march=nocona -mtune=haswell?

[chrisjsewell]

Hey @gmatteo, as we discussed, I was going to try using this for Quantum Mobile.
However, I note that it is set to compile for a specific architecture, which I imagine may cause issues like we have already seen in aiidateam/aiida-common-workflows#159?

[ltalirz]

nocona is an ancient microprocessor architecture (2004), i.e. I would be surprised if these settings are causing an issue.

conda-forge now already uses core2 per default, which is from 2006 (edit: don't remember where I saw this... anyhow, I definitely still see a lot of nocona around on conda-forge as well).