macOS: ld: warning: directory not found for option '-L/opt/homebrew/opt/icu4c/lib'

[andreasabel]

The following warning is issued by cabal for any project I (macOS) am building using text-icu-0.8, every time:

ld: warning: directory not found for option '-L/opt/homebrew/opt/icu4c/lib'

It stems from here: https://github.com/haskell/text-icu/blob/c73d7fe6f29e178d3ea40160e904ab39236e3c9d/text-icu.cabal#L120

This isn't severe, but may irritate some users.