stripping (with flags -S) in  /nix/store/9yx18k2903id1w8b7s12qfvvgfnzs0kl-aster/bin 
patching ELF executables and libraries
/nix/store/9yx18k2903id1w8b7s12qfvvgfnzs0kl-aster/bin/aster
patching script interpreter paths