Monthly Downloads: 17
Programming language: Haskell
License: BSD 3-clause "New" or "Revised" License
Tags: Development     FRP    
Latest version: v0.1.5.1

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Haskell Hackage Hackage CI Travis CI BSD3 License

Run GHCi from within a Reflex FRP application and interact with it using a functional reactive interface.



A functional-reactive wrapper around GHCi that uses filesystem notifications to automatically reload haskell source files.

Reflex.Process.GHCi provides the core GHCi process-running infrastructure. If you want to run your own GHCi, directly control when it reloads, or build your own custom interface, look there.

Reflex.Vty.GHCi provides a few widgets that are useful when building a console GHCi interface. Use these components to assemble your own vty GHCi runner.


This package includes a reflex-vty-based executable, shown above. Module information (errors, warnings, etc) is shown in a scrollable pane on the top half of the screen and the output of any expression you (optionally) choose to evaluate is shown in a scrollable pane on the bottom half. The panes are resizable using the mouse.

$ reflex-ghci -h
Welcome to reflex-ghci

Usage: reflex-ghci [-c|--command COMMAND] [-e|--expression EXPR]
  Run a Haskell REPL that automatically reloads when source files change.

Available options:
  -c,--command COMMAND     The ghci/cabal repl command to
                           run (default: "cabal repl --repl-options=-Wall")
  -e,--expression EXPR     The optional expression to evaluate once modules have
                           successfully loaded
  -h,--help                Show this help text


Inspired by the fantastic ghcid project.

*Note that all licence references and agreements mentioned in the reflex-ghci README section above are relevant to that project's source code only.