anchor.diff:  
     inherit (llvm) src;
   
  -  buildInputs = [ python cmake llvm ocaml findlib ctypes ];
  +  buildInputs = [ python cmake ocaml findlib ctypes ];
  +  propagatedBuildInputs = [ llvm ];
   
     patches = [ (fetchpatch {
       url = https://raw.githubusercontent.com/ocaml/opam-repository/2bdc193f5a9305ea93bf0f0dfc1fbc327c8b9306/packages/llvm/llvm.7.0.0/files/fix-shared.patch;
  
positive.code:   cmakeFlags = [
      "-DLLVM_OCAML_OUT_OF_TREE=TRUE"
      "-DLLVM_OCAML_INSTALL_PATH=${placeholder "out"}/ocaml"
    ];
  
    buildFlags = "ocaml_all";
  
negative.code:     mv $OCAMLFIND_DESTDIR/llvm/META{.llvm,}
    '';
  
    passthru = {
      inherit llvm;
    };
  
    meta = {
      inherit (llvm.meta) license homepage;
      platforms = ocaml.meta.platforms or [];
  