[dddgghhbbfblk]

Why would you want to slow down the more common thing instead of the less common thing? I'm not following that at all. That's why I asked if that's backwards.

[woodruffw]

Because you only slow down the more common thing once, and the less common thing is slower in absolute terms.

[lillecarl]

uv optimizes for the common usecase: You will install more packages than you will import new packages.