[tests] Conditionally skip valgrind xfails using llvm::sys

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[maximusron]

This doesn't seem to work yet, I think we should hold on merging it

[vgvassilev]

Yeah, just noticed that...

[maximusron]

strange, this was building locally with no problems

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 72.20%. Comparing base (01b5bc3) to head (90c9bab).

Additional details and impacted files

[](https://app.codecov.io/gh/compiler-research/CppInterOp/pull/281?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=compiler-research) ```diff @@ Coverage Diff @@ ## main #281 +/- ## =========================================== + Coverage 54.31% 72.20% +17.89% =========================================== Files 8 8 Lines 2957 2961 +4 =========================================== + Hits 1606 2138 +532 + Misses 1351 823 -528 ``` [see 4 files with indirect coverage changes](https://app.codecov.io/gh/compiler-research/CppInterOp/pull/281/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=compiler-research) [see 4 files with indirect coverage changes](https://app.codecov.io/gh/compiler-research/CppInterOp/pull/281/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=compiler-research)

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"