去做 unpacking source archive /nix/store/7hqn0d52zn1mmlrbdmirjx65s4vzms0v-cryptography-3.4.3.tar.gz source root is cryptography-3.4.3 setting SOURCE_DATE_EPOCH to timestamp 1612845474 of file cryptography-3.4.3/setup.cfg patching sources configuring no configure script, doing nothing building Executin