with import <nixpkgs> {};
stdenv.mkDerivation {
  name = "playground-shell";
  buildInputs = [
    gnumake
    guile
    go
    pkgconfig
    clang_7
    valgrind
  ];
  shellHook = ''
    unset GOPATH
    export CFLAGS="$CFLAGS $(pkg-config --cflags --libs guile-2.2)"
  '';
}