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Development Libraries and Tools

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This page contains a list of useful tools and libraries used frequently in Haskell development, for things such as debugging, benchmarking, static analysis and testing.


1 Debuggers

  • ghci powerful and extensible debugger for GHC.
  • hugs a haskell interpreter that includes debugging facilities.

2 Static Analysis Tools

Tools that perform some form of analysis on your code and provide useful feedback.

  • HLint - Detect common style mistakes and redundant parts of syntax, improving code quality.
  • Haskabelle - Convert haskell programs to isabelle theories.
  • Catch - Detect common sources of runtime errors (currently difficult to compile)
  • Sourcegraph - Haskell visualizer

Also, GHC when using the "-Wall" option provides a great deal of useful feedback.

3 Testing Frameworks

Libraries for testing Haskell.

  • QuickCheck - powerful testing framework where test cases are generated according to specific properties.
  • HUnit - unit testing framework similar to JUnit.
  • microspec - a tiny QuickCheck test library with minimal dependencies
  • Hspec - a testing framework similar to RSpec with support for QuickCheck and HUnit
  • test-framework integrates both Hunit and QuickCheck
  • The Haskell Test Framework, HTF integrates both Hunit and QuickCheck.
  • Tasty - from the website: "lets you combine your unit tests, golden tests, QuickCheck/SmallCheck properties, and any other types of tests into a single test suite"
  • SmallCheck - Similar to QuickCheck, but tests all values up to a particular depth rather than using a sample of randomly generated values.
  • dejafu - overloadable primitives for testable, potentially non-deterministic, concurrency. See also the announcement.

4 Dynamic Analysis Tools

Tools that analyse your program's run-time behavior to provide useful information, such as coverage or benchmarks.

  • hat - analyse each evaluation step of your haskell program.
  • hpc - check evaluation coverage of a haskell program, useful for determining test coverage.
  • criterion - powerful benchmarking framework.
  • threadscope - a new feature on the horizon which allows for benchmarking and visualization of multithreaded performance.
  • ghc profiling tools - a powerful suite of profiling tools exist within GHC itself

5 Ancillary Tools

Tools that aid the development process, such as build tools, revision control systems, and similar, while not performing any interaction with the code itself.