Faster klass() #611

Job	Run time
Select platforms	1s
alpine-linux-x64	0s
linux-x64-hs-nopch / build (debug)	23m 34s
linux-cross-compile / build (aarch64)	30m 52s
linux-x64-hs-minimal / build (debug)	7m 34s
linux-cross-compile / build (arm)	20m 54s
linux-x64-hs-optimized / build (debug)	18m 48s
linux-cross-compile / build (s390x)	21m 42s
linux-cross-compile / build (ppc64le)	29m 37s
linux-x64-hs-zero / build (debug)	12m 14s
linux-cross-compile / build (riscv64)	32m 48s
linux-x86-hs / build (debug)	16m 18s
linux-x86-hs / build (release)	24m 59s
docs / build (debug)	3m 20s
linux-x64 / build (debug)	28m 24s
macos-aarch64 / build (debug)	16m 52s
linux-x64 / build (release)	36m 22s
macos-aarch64 / build (release)	16m 39s
macos-x64 / build (debug)	39m 20s
macos-x64 / build (release)	38m 53s
windows-aarch64 / build (debug)	20m 15s
windows-x64 / build (debug)	44m 43s
windows-aarch64 / build (release)	18m 8s
windows-x64 / build (release)	49m 12s
macos-aarch64	0s
linux-x64	0s
macos-x64	0s
windows-x64	0s
Remove bundle artifacts	2s
	9h 11m 31s

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