Enable macOS builds on CI again #3326

Job	Run time
runghc	46s
nix-build	8m 52s
unit-tests	22s
cabal	1m 25s
shellFor-hoogle	39s
hydra-ifdLevel-0-and-1	4m 51s
tests-benchmarks	1m 22s
shellFor-multiple-package	51s
shellFor-single-package	25s
closure-size	7s
shellFor-not-depends	22s
cabal-doExactConfig	13s
update-docs	10s
check-materialization-concurrency	24s
maintainer-scripts	10s
multi-target	2m 37s
hydra-ifdLevel-2	16m 6s
hix	3m 53s
hydra-ifdLevel-3	30m 18s
build-extra-hackages	14s
docs	15m 9s
plan-extra-hackages	11s
hydra-without-remote-builders-ghc9102	7m 57s
hix-cabal	6m 50s
check-nix-tools	43s
check-path-support	26s
haskell-nix-roots-do-not-require-IFDs	16s
hydra-without-remote-builders-ghc967	5m 20s
	1h 50m 59s

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