The Future of Haskell Tooling
Haskell tooling, particularly editor and IDE integration has been sorely lacking for years. This talk will be a broad overview of the state of Haskell tooling, and the challenges faced by it. It will be derived from the experience of working on two summer of code projects trying to improve Haskell tooling.
For tooling users, we will discuss different Haskell tools available today(intero, haskell-ide-engine, ghcid etc.), their differences and trade-offs with respect to build tool support(stack, cabal, new-build, nix, make etc.), editor integration, features, limitations and speed.
We will go over the approach taken by haskell-ide-engine and the Language Server Protocol in order to solve these problems. Then we will discuss the new .hie file format designed to make information about Haskell source collected by GHC more accessible to tooling and users.
Finally, for budding tooling writers, we will discuss the various approaches to writing programs that extract information from and manipulate Haskell source, and their pros and cons:
- The GHC API
- Via ghc-mod and haskell-ide-engine
- GHC source plugins
- .hie files
Outline/Structure of the Talk
- Introduction to haskell-ide-engine and the Language Server Protocol with a brief demonstration - 5 minutes
- Discussion of the architecture of haskell-ide-engine and what it brings to the table in terms of solving the Haskell tooling problem - 5 minutes
- Introduction to .hie files - a new, build tool independent way to get information out of GHC - 5 minutes
- Comparison of various approaches to write new Haskell tooling in 2018 - 5 minutes
- Questions - Remaining time, if any
For people who wish to use Haskell tooling, this talk offers a broad understanding of all the different moving pieces that go into making their tools work(or alternatively, why trying to set up reliable Haskell tooling usually results in pulling your hair out)
For people who wish to write new Haskell tooling or contribute to existing tools, an introduction to what you need to know, from an overview of all the different approaches that exist to getting information about haskell source, to how users will finally end up interacting with your tool.
People who have been frustrated by Haskell editor tooling
Prerequisites for Attendees
Basic experience working with Haskell and haskell tooling.
schedule Submitted 9 months ago
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