anchor.diff:      ''
   
       + ''
  -      set +u
         substituteAll ${./add-flags.sh} $out/nix-support/add-flags.sh
         substituteAll ${./add-hardening.sh} $out/nix-support/add-hardening.sh
         substituteAll ${../wrapper-common/utils.bash} $out/nix-support/utils.bash
  
positive.code: 
    installPhase =
      ''
        set -u
  
        mkdir -p $out/bin $out/nix-support
  
        wrap() {
          local dst="$1"
          local wrapper="$2"
          export prog="$3"
          set +u
          substituteAll "$wrapper" "$out/bin/$dst"
          set -u
          chmod +x "$out/bin/$dst"
        }
      ''
  
negative.code:         [[ -e "$underlying" ]] || continue
          wrap ${targetPrefix}$variant ${./ld-wrapper.sh} $underlying
        done
      '';
  
    emulation = let
  