firefly

[Index] For package maintainers and hackage trustees Firefly is dead simple http framework written in Haskell. It strives for simplicity in implementation (and in use). It's great for people learning Haskell, fiddling with Monads, or who just need a really simple server for something. Here's a simple app: Just that easy! Check out the Example App for more! Specify your routes using regex patterns, the first one which matches will run. Handler is a monad with access to the incoming request. You can access parts of it using helpers, then return a response. Here are some valid response types and their inferred Content-Type There are more in Web.Firefly.Response. You can specify your status code using (body, Status) where body is any of the above types and Status is an Integer status code. Or, add headers too with (body, Status, HeaderMap) where HeaderMap is a map of names to values. Let's write some more interesting handlers: Here's an example of responding with JSON: You should use Firefly if: Don't use Firefly if: Seeing something like this? Firefly uses regex; and requires certain c-libs to be installed. The easiest way to fix this is to install Nix: Get Nix or run: curl https://nixos.org/nix/install | sh Then add the following to your project's stack.yaml: