Strategy to use ~= operator

[uranusjr]

Is your feature request related to a problem? Please describe.

Currently pdm uses a <,>= syntax for the compatible version strategy. Most of the time, the version range can be written much more concisely with ~=. For example, the only difference between <5,>=4.2.1 and ~=4.2 is 4.2.1, which does not matter most of the time, being a patch release.

Describe the solution you'd like

The naming may be problematic. pdm calls the <,>= strategy “compatible”, but ~= is actually called the compatible release operator in PEP 440. So either pdm needs to invent something new for ~= (and potentially causes confusion to standard packaging), or change the name for <,>=.

[frostming]

A minor behavior change from <5,>=4.2.1 to ~=4.2 does little harm I think?

[uranusjr]

I wouldn’t care at all personally, at least 🙂