A next generation web framework using the Haskell programming language, featuring:

• safety & security guaranteed at compile time
• performance
  • fast, compiled code
  • a greater concurrent load than any other web application server
• developer productivity: tools for all your basic web development needs

Learn more: http://yesodweb.com/

Installation: http://www.yesodweb.com/page/five-minutes

cabal update && cabal install yesod

Create a new project after installing

yesod init

Installing the latest development version from github

Currently there is a very annoying issue that aeson, a Yesod dependency requires deepseq < 1.2 A new version of aeson should be released fairly soon. This means that before installing Yesod you should

cabal install deepseq-1.1.0.2

To ensure that cabal prefers this package you need to first start from a clean slate. The easiest way to do that is to use virthualenv, which will prevent any conflicts with presently installed packages by creating an isolated install environment.

cabal install virthualenv
mkdir yesodweb
cd yesodweb
virthualenv --name=yesod

Yesod is broken up into 4 separate repos and built upon many smaller packages. All of them can be installed with the below command.

cabal update

for repo in hamlet persistent wai yesod; do
  git clone http://github.com/yesodweb/$repo
  (
    cd $repo
    git submodule update --init
    ./scripts/install
  )
done