Hi, TLDR: this release contains good but BREAKING changes! Read on for details. I'm pleased to announce the release of version 2.0.0 of the "dbmigrations" library for managing relational database schema changes. http://hackage.haskell.org/package/dbmigrations This release includes the creation of three new packages. These are the ones you want to install now, instead of the core library: * http://hackage.haskell.org/package/dbmigrations-postgresql * http://hackage.haskell.org/package/dbmigrations-sqlite * http://hackage.haskell.org/package/dbmigrations-mysql In this release all database-specific functionality was factored out of the core library into the packages listed above. Previously, if you wanted to use dbmigrations you needed to have, say, MySQL C libraries installed even if you didn't want to use dbmigrations on a MySQL database. Needless to say, this created headaches as more backend implementations were added to the library. This means that, as a transition aid, the core package's tool EXITS WITH AN ERROR MESSAGE that suggests you install one of the above backend-specific packages to get a backend-specific version of the dbmigrations tool. The dbmigrations library also includes a backend test suite that all of the backend-specific packages use to ensure consistent behavior across implementations of the dbmigrations interface. This release was made possible by Bastian Krol, who put in a lot of time to move the backend-specific bits of the library into the new packages. This was a much-needed change and I'm thankful for his contribution! -- Jonathan Daugherty