shell hooks for augmenting how cabal-install does various actions?

maybe theres a ticket about this, but i was talking with @hasufell about cabal and he mentioned that in old discussions with HVR, there was the idea of making it easier to glue cabal into a overall toolchain if there were the sort of shell hooks a la git-hooks or https://paludis.exherbo.org/configuration/hooks.html

with example application for example being:
``
and then you could hook into phases of like pre_configure and invoke ghcup automatically, installing the requested project ghc version
``

at the moment, i think cabal's pre/post-`$FOO` (for some value of FOO) hooks are only supported as haskell function call backs, which hits a different point in the ease of scripting tradeoffs

Start with cabal-install's existing pre/post-$FOO Haskell callbacks and review the earlier discussions referenced in the issue. Clarify which action phases should expose shell hooks and how a script such as ghcup would be invoked; done means cabal-install has an agreed, documented hook interface that is usable from shell tooling.

Written by the indexing model from the issue text.