Problem description

Problem

We would like a way to show the difference (if any) between what the manifest (pixi.toml) has vs what our environment has without actually updating either the environment or the lock file.
Right now we can achieve this (or at least I think so) by doing the following:

cp pixi.lock pixi.lock.bak
pixi lock --json --no-install > diff.json
mv pixi.lock.bak pixi.lock

Proposal

Adding a --dry-run option to pixi lock would allow us to achieve this goal (it would also imply --no-install) by simply running:

pixi lock --json --dry-run > diff.json