Haskell Setup
- If you haven't already, install Stack
- On POSIX systems, this is usually
curl -sSL https://get.haskellstack.org/ | sh
- On POSIX systems, this is usually
- Install the
yesod
command line tool:stack install yesod-bin --install-ghc
- Build libraries:
stack build
If you have trouble, refer to the Yesod Quickstart guide for additional detail.
Development
Start a development server with:
stack exec -- yesod devel
As your code changes, your site will be automatically recompiled and redeployed to localhost.
Tests
stack test --flag example:library-only --flag example:dev
(Because yesod devel
passes the library-only
and dev
flags, matching those flags means you don't need to recompile between tests and development, and it disables optimization to speed up your test compile times).
Documentation
- Read the Yesod Book online for free
- Check Stackage for documentation on the packages in your LTS Haskell version, or search it using Hoogle. Tip: Your LTS version is in your
stack.yaml
file. - For local documentation, use:
stack haddock --open
to generate Haddock documentation for your dependencies, and open that documentation in a browserstack hoogle <function, module or type signature>
to generate a Hoogle database and search for your query
- The Yesod cookbook has sample code for various needs
Getting Help
- Ask questions on Stack Overflow, using the Yesod or Haskell tags
- Ask the Yesod Google Group
- There are several chatrooms you can ask for help:
- For IRC, try Freenode#yesod and Freenode#haskell
- Functional Programming Slack, in the #haskell, #haskell-beginners, or #yesod channels.