Charlie Marsh a0b3815d84 Respect existing versions when pip-installing (#608) ... ## Summary When running `puffin pip-install`, we should respect versions that are already installed in the environment. For example, if you run `puffin pip-install flask==2.0.0` and then `puffin pip-install flask`, we should avoid upgrading Flask. The most natural way to model this is to mark them as "preferences". (It's not enough to just filter those requirements out prior to resolving, since we may not have the _dependencies_ of those packages installed. We _could_ recursively verify this across the `site-packages`, but that would be a larger PR.)		2023-12-12 17:22:47 +00:00
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src	Respect existing versions when pip-installing (#608)	2023-12-12 17:22:47 +00:00
tests	Respect existing versions when pip-installing (#608)	2023-12-12 17:22:47 +00:00
Cargo.toml	Keep track of in flight unzips using OnceMap (#544)	2023-12-08 20:18:11 +00:00