{ stdenv, fetchFromGitHub, lib, ocaml, libelf, cf-private, CoreServices, findlib, camlp4, sedlex, ocamlbuild, lwt_ppx, wtf8, dtoa }: with lib; stdenv.mkDerivation rec { version = "0.70.0"; name = "flow-${version}"; src = fetchFromGitHub { owner = "facebook"; repo = "flow"; rev = "v${version}"; sha256 = "1pydmfs7xxrqjdnidp2nagwpk2d0vf5nx3m821plld3vbyh22b76"; }; installPhase = '' mkdir -p $out/bin cp bin/flow $out/bin/ ''; buildInputs = [ ocaml libelf findlib camlp4 sedlex ocamlbuild lwt_ppx wtf8 dtoa ] ++ optionals stdenv.isDarwin [ cf-private CoreServices ]; meta = with stdenv.lib; { description = "A static type checker for JavaScript"; homepage = http://flowtype.org; license = licenses.bsd3; platforms = [ "x86_64-linux" "x86_64-darwin" ]; maintainers = with maintainers; [ puffnfresh globin ]; }; }