After a few weeks of beta status [1], I've now released version 4.0 of the Hakyll static site generator library. I'm really glad with this release, as from what I've found and heard, it makes many things a lot easier. # Main changes - The important `Compiler` type has been changed from `Arrow` to `Monad`: this makes it much easier to write custom compilers, as most Haskellers are more familiar with monads. - The template stays superficially the same, but it has grown much more powerful and flexible underneath. - Early and fast access to metadata makes things such as tags and pagination much easier. - All items (images, css...) can now have metadata associated. Metadata can no longer be manipulated, and this immutability should reduce the number of encountered bugs. - A `check` command has been added. This allows you to check that all internal (or external) links are still alive. # Installation, migration In order to install Hakyll 4, grab it from Hackage: cabal update cabal install hakyll Here are some useful links: - Website: http://jaspervdj.be/hakyll/ - Tutorial index: http://jaspervdj.be/hakyll/tutorials.html - Migration guide: http://jaspervdj.be/hakyll/tutorials/hakyll-3-to-hakyll4-migration-guide.htm... All feedback is welcome as always. [1]: https://groups.google.com/d/topic/hakyll/eRKWz8bVB0w/discussion Peace, Jasper