Building on Mac OS

[lostman]

I tried building 7386409 on Mac OS but it didn't succeed:

❯ nix-build --show-trace
error: while evaluating the attribute 'nixpkgsWasm.clangCross.cc' at /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/cross.nix:118:16:
while evaluating 'mkClang' at /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/cross.nix:34:15, called from /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/cross.nix:96:18:
while evaluating 'wrapCCWith' at /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/pkgs/top-level/all-packages.nix:6874:16, called from /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/cross.nix:34:64:
while evaluating 'callPackageWith' at /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/lib/customisation.nix:113:35, called from /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/pkgs/top-level/all-packages.nix:6875:7:
while evaluating 'makeOverridable' at /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/lib/customisation.nix:72:24, called from /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/lib/customisation.nix:117:8:
while evaluating anonymous function at /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/pkgs/build-support/cc-wrapper/default.nix:8:1, called from /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/lib/customisation.nix:74:12:
while evaluating the attribute 'stdenv' of the derivation 'musl-wasm32-unknown-unknown-wasm' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/make-derivation.nix:148:11:
while evaluating the attribute 'defaultNativeBuildInputs' of the derivation 'stdenv-darwin' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/default.nix:72:14:
while evaluating the attribute 'bintools' of the derivation 'wasm32-unknown-unknown-wasm-clang-cross-wrapper' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/make-derivation.nix:148:11:
while evaluating the attribute 'bintools_bin' of the derivation 'wasm32-unknown-unknown-wasm-llvm-binutils-wrapper-7.0.0' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/make-derivation.nix:148:11:
while evaluating the attribute 'buildCommand' of the derivation 'llvm-binutils-7.0.0' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/make-derivation.nix:148:11:
while evaluating the attribute 'buildInputs' of the derivation 'lld' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/make-derivation.nix:148:11:
while evaluating the attribute 'buildInputs' of the derivation 'llvm' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/make-derivation.nix:148:11:
while evaluating the attribute 'buildInputs' of the derivation 'cmake-3.10.2' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/make-derivation.nix:148:11:
while evaluating the attribute 'buildInputs' of the derivation 'libarchive-3.3.2' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/make-derivation.nix:148:11:
while evaluating the attribute 'buildInputs' of the derivation 'libxml2-2.9.7' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/make-derivation.nix:148:11:
while evaluating the attribute 'C_INCLUDE_PATH' of the derivation 'python-2.7.14' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/make-derivation.nix:148:11:
while evaluating the attribute 'C_INCLUDE_PATH' at /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/pkgs/development/interpreters/python/cpython/2.7/default.nix:162:5:
while evaluating 'makeSearchPathOutput' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/lib/strings.nix:94:42, called from /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/pkgs/development/interpreters/python/cpython/2.7/default.nix:162:22:
while evaluating 'makeSearchPath' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/lib/strings.nix:84:28, called from /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/lib/strings.nix:94:48:
while evaluating anonymous function at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/lib/strings.nix:85:32, called from undefined position:
while evaluating the attribute 'buildInputs' of the derivation 'CF-osx-10.10.5' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/make-derivation.nix:148:11:
while evaluating the attribute 'nativeBuildInputs' of the derivation 'ICU-osx-10.10.5' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/make-derivation.nix:148:11:
while evaluating 'getOutput' at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/lib/attrsets.nix:450:23, called from undefined position:
while evaluating anonymous function at /nix/store/l3ayhq3pa5zf1wxwsyw7c5ybyd0vffck-nixpkgs/pkgs/stdenv/generic/make-derivation.nix:90:17, called from undefined position:
while evaluating 'callPackageWith' at /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/lib/customisation.nix:113:35, called from /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/pkgs/top-level/darwin-packages.nix:23:13:
while evaluating 'makeOverridable' at /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/lib/customisation.nix:72:24, called from /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/lib/customisation.nix:117:8:
while evaluating anonymous function at /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/pkgs/os-specific/darwin/cctools/port.nix:1:1, called from /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/lib/customisation.nix:74:12:
assertion failed at /nix/store/lddxm6bb0v9fnj29av8bqxslnx8vcyaq-source/nixpkgs/pkgs/os-specific/darwin/cctools/port.nix:15:1

I also tried an earlier version 0094834:

error: infinite recursion encountered, at undefined position

Is it possible to make wasm-cross work on Mac?