Fix more aarch64-linux stuff. Take 2 #1773

Job	Run time
build-extra-hackages	12s
cabal	15s
cabal-doExactConfig	15s
check-materialization-concurrency	47s
check-path-support	9s
closure-size	9s
docs	24s
haskell-nix-roots-do-not-require-IFDs	9s
hix	26s
hix-cabal	14s
hydra-ifdLevel-0-and-1	16s
hydra-ifdLevel-2	11s
hydra-ifdLevel-3-and-ghc-8-10	11s
hydra-ifdLevel-3-and-ghc-9-2	10s
hydra-ifdLevel-3-and-not-ghc-8-10-or-9-2	11s
hydra-without-remote-builders	11s
maintainer-scripts	10s
multi-target	14s
nix-build	39s
nix-tools	7s
plan-extra-hackages	14s
runghc	16s
shellFor-hoogle	11s
shellFor-multiple-package	12s
shellFor-not-depends	15s
shellFor-single-package	16s
tests-benchmarks	13s
unit-tests	11s
update-docs	7s
	7m 15s

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