bootstrap-glibc.drv requested impure path '/bin/sh', but it was not in allowed-impure-host-deps

[YuMingLiao]

I have encountered this error message when I ./ghcjs-setup.

patching /nix/store/ysmyi3fafm9ngnq7hpzg6pkag4k8bi3h-bootstrap-tools/lib/libpcrecpp.so.0.0.1 patching /nix/store/ysmyi3fafm9ngnq7hpzg6pkag4k8bi3h-bootstrap-tools/lib/libpcreposix.so.0.0.3 building '/nix/store/2y6c0xhdxh0g2m6j4czyxxjq3blz97j7-stdenv-linux-boot.drv'... error: derivation '/nix/store/bzc72d3bc8y7pgpjqplbxxnjgyrbzhmf-bootstrap-glibc.drv' requested impure path '/bin/sh', but it was not in allowed-impure-host-deps
It looks like a problem occurred. Please submit an issue at https://github.com/ryantrinkle/ghcjs-setup/issues and we'll look into it right away

nixos-version 18.09.2574.a7e559a5504 (Jellyfish)

touch /bin/sh touch: cannot touch '/bin/sh': Text file busy