stripping (with flags -S) in  /nix/store/0xfrj4y2z4rym0q4k8vkh1b2fjvfsxhk-aster/bin 
patching ELF executables and libraries
/nix/store/0xfrj4y2z4rym0q4k8vkh1b2fjvfsxhk-aster/bin/aster
patching script interpreter paths