arrow-cpp: Fix building x86_64-darwin on aarch_64-darwin (#193207)

When building x86_64-darwin emulated via Rosetta on aarch64-darwin, all
tests would fail with

> Illegal instruction: 4

this resolves that by never using Jemalloc on Darwin, since even though
`isAarch64` is false, it might “really” be aarch64-darwin.

authored by Andrew Marshall and committed by GitHub cc89e76d 859516a1

+1 -1
+1 -1
pkgs/development/libraries/arrow-cpp/default.nix
··· 39 39 , zstd 40 40 , enableShared ? !stdenv.hostPlatform.isStatic 41 41 , enableFlight ? true 42 - , enableJemalloc ? !(stdenv.isAarch64 && stdenv.isDarwin) 42 + , enableJemalloc ? !stdenv.isDarwin 43 43 # boost/process is broken in 1.69 on darwin, but fixed in 1.70 and 44 44 # non-existent in older versions 45 45 # see https://github.com/boostorg/process/issues/55