Add nixpkgs-2505 #3174

Job	Run time
cabal	31s
cabal-doExactConfig	24s
nix-build	6m 46s
unit-tests	15s
multi-target	14s
runghc	44s
shellFor-hoogle	19s
shellFor-multiple-package	11s
shellFor-not-depends	32s
shellFor-single-package	11s
tests-benchmarks	11s
build-extra-hackages	22s
check-materialization-concurrency	24s
check-path-support	9s
closure-size	8s
docs	25m 3s
haskell-nix-roots-do-not-require-IFDs	20s
hix	34s
hydra-ifdLevel-0-and-1	5m 23s
hydra-ifdLevel-2	19m 9s
hydra-ifdLevel-3	30m 16s
hydra-without-remote-builders-ghc9102	12s
hydra-without-remote-builders-ghc967	5m 21s
plan-extra-hackages	9s
update-docs	8s
maintainer-scripts	8s
hix-cabal	10s
nix-tools	14s
	1h 38m 28s

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