Poetry has lock files, so installs are always the exact same version of everything. I've found this is almost great, but when it breaks down, perhaps because t

Poetry has lock files, so installs are always the exact same version of everything. I've found this is almost great, but when it breaks down, perhaps because two packages request a transitive dependency in different ways, or if the resolver really wants to install a new version of something that won't compile on your system, it's a giant pain and sometimes impossible to work around. These days I just use pip with venv unless I have a good reason not to.