Fix cross compilation TH in devShells #3289

Job	Run time
build-extra-hackages	34s
nix-build	6m 25s
unit-tests	25s
shellFor-hoogle	1m 26s
shellFor-not-depends	1m 34s
maintainer-scripts	26s
runghc	1m 21s
plan-extra-hackages	38s
cabal	41s
tests-benchmarks	35s
cabal-doExactConfig	41s
multi-target	9m 49s
shellFor-single-package	1m 32s
shellFor-multiple-package	1m 8s
check-materialization-concurrency	23s
haskell-nix-roots-do-not-require-IFDs	23s
update-docs	9s
hydra-without-remote-builders-ghc967	8s
hydra-ifdLevel-0-and-1	16m 8s
check-path-support	40s
closure-size	8s
hix-cabal	4m 10s
hydra-ifdLevel-2	12m 38s
check-nix-tools	1m 25s
hix	3m 30s
hydra-ifdLevel-3	30m 16s
hydra-without-remote-builders-ghc9102	24s
docs	4m 6s
	1h 41m 43s

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