[1 of 1] Compiling Main             ( tmp.hs, tmp.o )
Linking tmp ...
impure path `/private/tmp/nix-build-test_haskell.drv-0/ghc13834_0/ghc_5.o' used in link
clang-7: error: linker command failed with exit code 1 (use -v to see invocation)
`cc' failed in phase `Linker'. (Exit code: 1)