anchor.diff:        --output_user_root="$bazelUserRoot" \
         build \
         -j $NIX_BUILD_CORES \
  +      '' + lib.optionalString stdenv.isDarwin ''
  +      "''${copts[@]}" \
  +      "''${host_copts[@]}" \
  +      "''${linkopts[@]}" \
  +      "''${host_linkopts[@]}" \
  +      '' + ''
         $bazelFlags \
         $bazelTarget
   
  
positive.code:   buildPhase = fBuildAttrs.buildPhase or ''
      runHook preBuild
  
      BAZEL_USE_CPP_ONLY_TOOLCHAIN=1 \
      USER=homeless-shelter \
      bazel \
  
negative.code: { stdenv
  , bazel
  , cacert
  , lib
  }:
  
  args@{ name, bazelFlags ? [], bazelTarget, buildAttrs, fetchAttrs, ... }:
  
  