intero: Complete interactive development program for Haskell

[ bsd3, development, program ] [ Propose Tags ]

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Versions [faq] 0.0.0, 0.1.0, 0.1.1, 0.1.2, 0.1.3, 0.1.5, 0.1.6, 0.1.7, 0.1.8, 0.1.9, 0.1.10, 0.1.11, 0.1.12, 0.1.13, 0.1.14, 0.1.15, 0.1.16, 0.1.17, 0.1.18, 0.1.19, 0.1.20, 0.1.21, 0.1.22, 0.1.23, 0.1.24, 0.1.25, 0.1.26, 0.1.27, 0.1.28, 0.1.29, 0.1.30, 0.1.31, 0.1.32, 0.1.33, 0.1.34, 0.1.35, 0.1.36, 0.1.37, 0.1.38 (info)
Change log CHANGELOG
Dependencies array, base (<5), bytestring, containers, directory, filepath, ghc (>=7.8 && <=8.6.3), ghc-boot-th, ghc-paths, ghci, haskeline, mtl, network, process, random, syb, time, transformers, unix, Win32 [details]
License BSD-3-Clause
Copyright 2016 FP Complete, 2016 Chris Done, 2012 Kazu Yamamoto, 2008 Claus Reinke, 2005 The University of Glasgow
Author Chris Done, The University of Glasgow
Category Development
Home page
Source repo head: git clone git://
Uploaded by ChrisDone at Wed Jan 9 20:39:30 UTC 2019
Distributions NixOS:0.1.38
Executables intero
Downloads 8963 total (158 in the last 30 days)
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Status Hackage Matrix CI
Docs not available [build log]
All reported builds failed as of 2019-01-09 [all 3 reports]


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Readme for intero-0.1.38

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intero Build Status Build status

Complete interactive development program for Haskell

Intero for Emacs


Please see the homepage for Intero for Emacs.

Default key bindings

Key binding | Description --- | --- M-. | Jump to definition C-c C-i | Show information of identifier at point C-c C-t | Show the type of thing at point, or the selection C-u C-c C-t | Insert a type signature for the thing at point C-c C-l | Load this module in the REPL C-c C-c | Evaluate the selected region in the REPL C-c C-r | Apply suggestions from GHC C-c C-k | Clear REPL C-c C-z | Switch to and from the REPL

Install requirements

Make sure you have this package installed on Linux:


(People on other platforms please contribute the equivalent dependency.)

Enabling intero

To enable intero in all haskell-mode buffers by default, enable intero-global-mode, by using M-x customize or by adding (intero-global-mode 1) to your Emacs start-up files.

Intero will then activate for all projects, and for files without a stack.yaml, it will assume the "global" project. If you want to use an alternate stack yaml configuration file (for example, when developing for multiple GHC versions), use M-x intero-stack-yaml to switch file. When switching configuration, you will asked whether you want to preserve this choice across emacs sessions for the given project.

Whitelisting/blacklisting projects

Some users prefer to enable Intero selectively. The custom variables intero-blacklist and intero-whitelist are provided for this purpose, and are honoured by intero-global-mode:

If the parent directory of a Haskell file is listed in intero-blacklist, then intero will not be enabled for that file, unless a parent directory of that file is also listed in intero-whitelist. In other words, whitelist entries take precedence. You can therefore blacklist / to disable intero in all projects unless they are whitelisted.

Intero support for other editors and IDEs

Although not supported by the Intero maintainers, integrations with other editors exist:

If you would like to build support into a new editor or IDE, please see