Lower pin for rhash with compatible soname

[zklaus]

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

Fixes part of #192, the other part being a repodata patch.

[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[zklaus]

@conda-forge-admin, please rerender

[jschueller]

I manually pinned conda-build in the scripts because of a bug, and rerendering cancels that

[zklaus]

I manually pinned conda-build in the scripts because of a bug, and rerendering cancels that

Thanks, that makes sense. Let's see how this goes...

[isuruf]

Why is this needed?

[zklaus]

Because new Cmake builds are incompatible with rhash<1.4.4. This showed up in several CIs (see list below) as

cmake: error while loading shared libraries: librhash.so.0: cannot open shared object file: No such file or directory

In other words, it's not really that Cmake depends on rhash>=1.4.4, but rather that a Cmake build that was produced with any Rhash version prior to 1.4.4 should have a run requirement of rhash<1.4.4 and any build produced with Rhash 1.4.4 or newer should have a run requirement of rhash>=1.4.4. Perhaps some Jinja magic would be a better way to achieve this?

Here the promised list of failed CIs:

• conda-forge/libnetcdf-feedstock
• bluescarni/heyoka
• conda-forge/visp-feedstock

The same issue was reported on a few other feedstocks, but because the builds were restarted, it's a bit hard to dig up the logs.

[zklaus]

@isuruf, I understand the fixed repodata patch solves the issue, but is it still best practice to include the pin? Otherwise we can just close this.