Two years since PEP 665 was rejected and three years since I started working towards some lock file solution, I present my next (and last regardless of outcome) attempt at coming up with a lock file standard. Terms “platform”: OS plus CPU “environment”: interpreter plus platform “distribution”: in the PyPA spec sense, i.e. a project “lock entry”: a set of distribution files locked for a specific environment “lock file”: a set of lock entries for a specific set of dependenc...