Fix detection of redhat enterprise compute node

[adamjstewart]

@CreRecombinase can you check if this solves #15251 for you?

We need to upstream this to the distro project if it doesn't already exist in newer versions of distro.

[CreRecombinase]

As far as I can tell this works. Thanks so much!

[scheibelp]

We need to upstream this to the distro project if it doesn't already exist in newer versions of distro.

I don't see it in https://github.com/nir0s/distro/blob/master/distro.py

Do you think it's worth waiting to open a PR there before merging this?

We've had other issues like this in the past (e.g. conversion of OS names between minor releases of an OS). IMO it would be good to have a configuration option in Spack for converting one form of detected OS into another. Do you agree?

[adamjstewart]

@scheibelp I opened a PR at python-distro/distro#255

We've had other issues like this in the past (e.g. conversion of OS names between minor releases of an OS). IMO it would be good to have a configuration option in Spack for converting one form of detected OS into another. Do you agree?

Conversion of OS names is already being done by distro itself, I don't think it would be a good idea to have our own logic to do that too. The distro developers have been pretty good about these changes in the past, see python-distro/distro#165