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README.md

Ghc Type Errors Plugin Examples

This is a repository for testing possibilities provided by the error messages rewriting plugins interface. There are a few different example plugins available.

Usage

  • Clone ghc-type-errors-plugin and this repository to be alongside one another.

    $ git clone https://gitlab.haskell.org/dylan-thinnes/ghc-type-errors-plugin.git
$ git clone https://gitlab.haskell.org/dylan-thinnes/ghc-type-errors-plugin-examples.git

  • Run the normal build process for GHC in the ghc-type-errors-plugin directory.

  • Modify the with-project: field in cabal.project to the absolute path <location of ghc-type-errors-plugin repository>/_build/stage1/bin/ghc.

  • Then, run cabal build in the ghc-type-errors-plugin-examples/use-test-plugin. This should build the plugins available in ghc-type-errors-plugin-examples, and then try to build some modules in use-test-plugin using some those plugins. You can modify which modules and plugins are being used in the use-test-plugin.cabal file.