anchor.diff:      then ''
           runHook preBuild
   
  -        make SKIP_DEPS=1 ERL_OPTS="$ERL_OPTS ${debugInfoFlag}"
  +        make $buildFlags "''${buildFlagsArray[@]}"
   
           runHook postBuild
       ''
  
positive.code: , configurePhase ? null
  , meta ? {}
  , enableDebugInfo ? false
  , ... }@attrs:
  
  with stdenv.lib;
  
negative.code:     buildInputs = [ erlang perl which gitMinimal wget ];
      propagatedBuildInputs = beamDeps;
  
      buildFlags = [ "SKIP_DEPS=1" ]
        ++ lib.optional (enableDebugInfo || erlang.debugInfo) ''ERL_OPTS="$ERL_OPTS +debug_info"''
        ++ buildFlags;
  
      configurePhase = if configurePhase == null
      then ''
        runHook preConfigure
  