hydra exit hook limitation

[bgwines]

I've got a hydra (https://melpa.org/#/symbol-navigation-hydra), and it needs to be amaranth so it can do some cleanup upon exit (https://github.com/bgwines/symbol-navigation-hydra/blob/e137c86d530c07438a6e42a37e054c40ab8a05fe/symbol-navigation-hydra.el#L459-L463). As a user of this package, I think it'd be dandy if I could exit the hydra via C-g (canonically bound to doom/escape / keyboard-quit / ...) in addition to via the heads that actually exit the hydra (e.g. q, in my case).

This could be accomplished in a few ways:

• amaranth hydras could exit via C-g (this sounds like a breaking API change so maybe it could be configurable via a parameter to defhydra)
• an :upon-exit parameter could be added to defhydra similar to :post, but defined such that it doesn't execute after every head, only after actually exiting the hydra
• some other method I haven't thought of

what are your thoughts on this use-case? Thanks so much!

[bgwines]

P.S. thanks for developing this sick package