anchor.diff:  
         echo "$ccLDFlags" > $out/nix-support/cc-ldflags
         echo "$ccCFlags" > $out/nix-support/cc-cflags
  -
  -      ##
  -      ## User env support
  -      ##
  -
  -      # Propagate the wrapped cc so that if you install the wrapper,
  -      # you get tools like gcov, the manpages, etc. as well (including
  -      # for binutils and Glibc).
  +    ''
  +
  +    + optionalString propagateDoc ''
  +      ##
  +      ## Man page and info support
  +      ##
  +
  +      mkdir -p $man/nix-support $info/nix-support
         printWords ${cc.man or ""}  > $man/nix-support/propagated-user-env-packages
  +      printWords ${cc.info or ""}  > $info/nix-support/propagated-user-env-packages
       ''
   
       + ''
  -
         ##
         ## Hardening support
         ##
  
positive.code:     ''
        set -u
  
        mkdir -p $out/bin $out/nix-support $man/nix-support
  
        wrap() {
          local dst="$1"
  
negative.code:       ##
        ## Extra custom steps
        ##
      ''
  
      + extraBuildCommands;
  
    inherit expand-response-params;
  