stripping (with flags -S) in  /nix/store/k4ifdfhxfx4kww9lxzp2yxk9wsg00gg5-aster/bin 
patching ELF executables and libraries
/nix/store/k4ifdfhxfx4kww9lxzp2yxk9wsg00gg5-aster/bin/aster
patching script interpreter paths