Pin index-state used to build hoogle in tests (#2278) #2731

Job	Run time
build-extra-hackages	1m 52s
cabal-doExactConfig	3m 31s
check-materialization-concurrency	25s
cabal	3m 31s
check-path-support	3m 14s
closure-size	7s
docs	1m 41s
haskell-nix-roots-do-not-require-IFDs	54s
hix	3m 8s
hix-cabal	18s
hydra-ifdLevel-0-and-1	2m 49s
hydra-ifdLevel-2	6m 23s
hydra-ifdLevel-3	30m 14s
hydra-without-remote-builders-ghc8107	2m 26s
hydra-without-remote-builders-ghc9101	2m 2s
maintainer-scripts	8s
multi-target	1m 11s
nix-build	9m 53s
nix-tools	16s
plan-extra-hackages	6s
shellFor-hoogle	11s
shellFor-multiple-package	17s
runghc	9s
shellFor-not-depends	17s
shellFor-single-package	28s
tests-benchmarks	14s
unit-tests	6s
update-docs	4s
	1h 15m 55s

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