anchor.diff:  
     strictDeps = true;
   
  -  inherit releaseDir;
  +  inherit releaseDir tmpDir;
   
     installPhase = args.installPhase or ''
       runHook preInstall
   
       # rename the output dir to a architecture independent one
  -    mapfile -t targets < <(find "$NIX_BUILD_TOP" -type d | grep '${releaseDir}$')
  +    mapfile -t targets < <(find "$NIX_BUILD_TOP" -type d | grep '${tmpDir}$')
       for target in "''${targets[@]}"; do
         rm -rf "$target/../../${buildType}"
         ln -srf "$target" "$target/../../"
  
positive.code:     mkdir -p $out/bin $out/lib
  
      xargs -r cp -t $out/bin <<< $bins
      find $releaseDir \
        -maxdepth 1 \
        -regex ".*\.\(so.[0-9.]+\|so\|a\|dylib\)" \
        -print0 | xargs -r -0 cp -t $out/lib
  
negative.code:   ccForHost="${stdenv.cc}/bin/${stdenv.cc.targetPrefix}cc";
    cxxForHost="${stdenv.cc}/bin/${stdenv.cc.targetPrefix}c++";
    releaseDir = "target/${rustTarget}/${buildType}";
    tmpDir = "${releaseDir}-tmp";
  
    # Specify the stdenv's `diff` by abspath to ensure that the user's build
    # inputs do not cause us to find the wrong `diff`.
  