source common.sh clearStore nix-build --no-out-link -E ' with import ./config.nix; mkDerivation { name = "placeholders"; outputs = [ "out" "bin" "dev" ]; buildCommand = " echo foo1 > $out echo foo2 > $bin echo foo3 > $dev [[ $(cat ${placeholder "out"}) = foo1 ]] [[ $(cat ${placeholder "bin"}) = foo2 ]] [[ $(cat ${placeholder "dev"}) = foo3 ]] "; } '