Installing typeshed stubs from lockfile

Feature

Abbility to install typeshed stubs from pylock.toml

Pitch

In our project we want to run mypy against system installed packages which vary on each distribution. We can create the pylock.toml file or equivalents from the current environment so we can have a list of all the installed packages. What we are missing though is a helper that would go through this list and install all possible stub files with appropriate version lock matching the installed ones so that it guarantees to not alter (upgrade/downgrade) the currently installed packages.

Inizia individuando la gestione esistente di pylock.toml o di dati di lockfile equivalenti in mypy; l'issue non indica file o test specifici. Determina come associare i pacchetti installati e le relative versioni agli stub typeshed disponibili senza modificare tali pacchetti. Il lavoro è completato quando l'helper installa stub compatibili preservando l'ambiente bloccato, con test che coprono la corrispondenza delle versioni e gli stub non disponibili.