GHC 8.8.1 Fails to Build on macOS with Native clang 11.0.0

[Steven Smith]

> I’m trying to update the MacPorts ghc port. The build isn’t getting the TAG_MASK #define for some reason, which breaks the build.


I see this is a known issue:

https://gitlab.haskell.org/ghc/ghc/issues/17146


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