Revert/fix a install

Registered by Joshua Harlow on 2012-04-06

Idea here is that when installed, if a user say upgrades a package, there could be a stack command that would revert/fix that upgraded version back to the known installed version. This might be useful when messing around with newer packages/features when u want to get back to a stable state, without reinstalling...

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If installation was idempotent, they could just re-run the installation. On the other hand, snapshotting a virtual machine is probably a better way to achieve the end goal, since it would revert even if the configuration was broken by the attempted update. - Doug

Ya, from the meetup there are I think alot of people who don't like the VM approach (or using a VM at all), since its not especially realistic (and slow as ass). It seems like there could be a simple tool that would take a ".trace" file in and at least attempt to restore/fix the pkgs that were installed (since they should be listed in the install trace anyway). I don't think it should be a core functionality but a tool might make sense. -Josh

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