Hookup

Hookup takes care of Rails tedium like bundling and migrating through Git hooks. It fires after events like

pulling in upstream changes
switching branches
stepping through a bisect
conflict in schema

Usage

gem install hookup
cd yourproject
hookup install

Bundling

Each time your current HEAD changes, hookup checks to see if your Gemfile, Gemfile.lock, or gem spec has changed. If so, it runs bundle check, and if that indicates any dependencies are unsatisfied, it runs bundle install.

Migrating

Each time your current HEAD changes, hookup checks to see if any migrations have been added, deleted, or modified. Deleted and modified migrations are given the rake db:migrate:down treatment, then rake db:migrate is invoked to bring everything else up to date.

Schema Resolving

Each time there's a conflict in db/schema.rb on the Rails::Schema.define line, hookup resolves it in favor of the newer of the two versions.

ChangeLog

See it on the wiki