Pinning suitesparse

[martinandersen]

Raising this to see if suitesparse should be pinned globally.

re conda-forge/cvxopt-feedstock#19

[djsutherland]

For the record, it's only broken compatibility on major versions, so the CB3 default behavior if you just list - suitesparse in run should be okay: https://abi-laboratory.pro/tracker/timeline/suitesparse/. But I guess there was an issue with the Mac install_name (conda-forge/cvxopt-feedstock#19 (comment))?

[jakirkham]

Yeah it's a little more complicated. The SONAME is too specific. So we either need to patch it to be less specific or we need to pin suitesparse down to the patch version.

ref: conda-forge/suitesparse-feedstock#22 (comment)
ref: conda-forge/suitesparse-feedstock#23

[jakirkham]

cc @minrk

[minrk]

conda-forge/suitesparse-feedstock#23 has been merged, so suitesparse shouldn't need pinning (at least not pin_run_as_build, which is the fix for what prompted the linked issues). If we want to use pinning to do coordinated upgrades, that's a different question.