Numactl dont clobber configureflags #3285

Job	Run time
nix-build	1h 30m 30s
unit-tests	13s
runghc	31s
shellFor-single-package	1h 33m 3s
cabal-doExactConfig	29s
tests-benchmarks	12s
maintainer-scripts	10s
multi-target	1h 15m 21s
shellFor-not-depends	21s
shellFor-hoogle	59m 14s
plan-extra-hackages	11s
hix	1m 52s
build-extra-hackages	11s
cabal	13s
docs	3m 5s
hydra-ifdLevel-2	8m 38s
shellFor-multiple-package	29s
check-path-support	17s
check-nix-tools	16s
update-docs	8s
hix-cabal	15s
hydra-without-remote-builders-ghc967	4m 51s
check-materialization-concurrency	24s
closure-size	10s
hydra-ifdLevel-3	30m 17s
hydra-ifdLevel-0-and-1	2m 35s
haskell-nix-roots-do-not-require-IFDs	23s
hydra-without-remote-builders-ghc9102	1m 42s
	6h 16m 1s

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