anchor.diff:  , buildInputs ? [], erlangDeps ? [], pluginDeps ? []
   , postPatch ? ""
   , compilePorts ? false
  +, installPhase ? null
   , meta ? {}
   , ... }@attrs:
   
  
positive.code:       runHook postBuild
      '';
  
      installPhase = ''
        runHook preInstall
        mkdir -p "$out/lib/erlang/lib/${name}-${version}"
        for reldir in src ebin priv include; do
  
negative.code:         success=1
        done
        runHook postInstall
      ''
      else installPhase;
  
      meta = {
        inherit (erlang.meta) platforms;
  