Fix cross compilation TH in devShells #3296

Job	Run time
cabal	1m 42s
unit-tests	11s
runghc	1m 27s
nix-build	20m 43s
shellFor-single-package	2m 45s
shellFor-hoogle	2m 39s
cabal-doExactConfig	17s
docs	17m 31s
hydra-ifdLevel-0-and-1	10m 44s
check-materialization-concurrency	23s
check-path-support	13s
hydra-ifdLevel-2	16m 56s
shellFor-multiple-package	2m 16s
update-docs	9s
plan-extra-hackages	18s
tests-benchmarks	19s
maintainer-scripts	9s
hix	2m 9s
multi-target	2m 11s
shellFor-not-depends	25s
hydra-ifdLevel-3	30m 17s
build-extra-hackages	15s
closure-size	8s
haskell-nix-roots-do-not-require-IFDs	28s
hydra-without-remote-builders-ghc9102	8s
hydra-without-remote-builders-ghc967	8s
hix-cabal	19s
check-nix-tools	18s
	1h 55m 28s

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