Feature request: Ability to pin a cask so that it doesn't upgrade

[echosa]

Description of feature/enhancement

With straight brew, we can brew pin <formula> in order to prevent that formula from ever upgrading until it is unpinned. It'd be great to have this same ability for brew cask, something like brew cask pin <formula>.

Justification

Sometimes, we don't want to upgrade a particular program. Pins allow us to avoid doing so.

Example use case

$ brew cask pin vagrant
$ brew cask pin dwarf-fortress
etc.

[usmonster]

(See also old discussion on Homebrew/brew#1523.)

[bretonics]

I agree, this needs to exist. Come casks, say mactex, are massive and it would be beneficial to pin such casks. Other times, keeping a particular version of say java is also desirable.

[vitorgalvao]

There’s no way we can enforce pin, because a considerable amount of casks auto update and we neither have control over that, nor do we want to — it’s one of the goals of HBC that the results of our installation is as similar as possible to the results of a manual installation.