stripping (with flags -S) in  /nix/store/kdqqz9yclqfxmp7k7z4vpz95p9rfdb64-aster/bin 
patching ELF executables and libraries
/nix/store/kdqqz9yclqfxmp7k7z4vpz95p9rfdb64-aster/bin/aster
patching script interpreter paths