I will update this post soon as my day job leaves little time for fun aspects like this.

Spacemacs’ new Haskell layer is what I like now eventhough the Haskell editor setup is not easy for the novice.

After installing Spacemacs these are the basic steps I followed.

Added the Haskell layer

;; —————————————————————-
;; Example of useful layers you may want to use right away.
;; Uncomment some layer names and press (Vim style) or
;; (Emacs style) to install them.
;; —————————————————————-
;; auto-completion
;; better-defaults
(haskell .variables haskell-enable-shm-support t)
;; git
;; markdown
;; org
;; (shell :variables
;; shell-default-height 30
;; shell-default-position ‘bottom)
;; spell-checking
;; syntax-checking
;; version-control

Added this to .spacemacs

(defun dotspacemacs/user-init ()
“Initialization function for user code.
It is called immediately after `dotspacemacs/init’, before layer configuration
This function is mostly useful for variables that need to be set
before packages are loaded. If you are unsure, you should try in setting them in
`dotspacemacs/user-config’ first.”
(add-hook ‘haskell-mode-hook ‘turn-on-haskell-indentation)
(add-to-list ‘exec-path “C:/Users/476458/AppData/Roaming/local/bin/”)

C:/Users/476458/AppData/Roaming/local/bin/ contains other tools installed by Stack.

Stack is a cross-platform program for developing Haskell projects. It is aimed at Haskellers both new and experienced.


Suggested by spacemacs Reddit group

(defun dotspacemacs/user-config ()
“Configuration function for user code.
This function is called at the very end of Spacemacs initialization after
layers configuration.
This is the place where most of your configurations should be done. Unless it is
explicitly specified that a variable should be set before a package is loaded,
you should place your code here.”
(spacemacs/set-leader-keys-for-major-mode ‘haskell-mode
“cx” ‘inferior-haskell-load-and-run

This helps me compile and execute the Haskell program by using the keystrokes

SPC m c x


Emacs haskell-mode

I set about installing emacs and its haskell-mode based on emacs-haskell-tutorial. But this is what worked for me. This is only part of the process and I will add any new information I come across.

Eval: (find-file user-init-file)

Press Enter. It loads my .emacs file if it is there.Create one and save it if it isn’t there.


This section should be enough if there is no proxy.

(require ‘package)
(add-to-list ‘package-archives
‘(“melpa-stable” . “”) t)

Corporate proxy

If there is a proxy add this section too.

(setq url-proxy-services
‘((“no_proxy” . “^\\(localhost\\|10.*\\)”)
(“http” . “”)
(“https” . “”)))

(setq url-http-proxy-basic-auth-storage
(list (list “”
(cons “Credentials !”
(base64-encode-string “user:password”)))))


Cabal seems to be the package manager for Haskell libraries.

I had cabal.exe locally and realized it is not the correct way.

D:\Frege>..\Downloads\cabal update
Downloading the latest package list from
Note: there is a new version of cabal-install available.
To upgrade, run: cabal install cabal-install

D:\Frege>ghc-pkg list Cabal
D:/Haskell Platform/7.10.3\lib\package.conf.d:

D:\Frege>..\Downloads\cabal install happy
cabal: The program ghc version >=6.4 is required but it could not be found.

So I installed Haskell Platform and added the bin folder to the PATH.

Everything worked after that.

D:\Frege>cabal install cabal-install
Resolving dependencies…
Downloading cabal-install-…
Configuring cabal-install-…
Building cabal-install-…
Linking dist\build\cabal\cabal.exe …
Installing executable(s) in C:\Users\476458\AppData\Roaming\cabal\bin
Installed cabal-install-

cabal: no command given (try –help)

D:\Frege>cabal –version
cabal-install version
using version of the Cabal library

InstallCert$SavingTrustManager.class emacs-24.5-bin-i686-mingw32

D:\Frege>cabal update
Downloading the latest package list from

D:\Frege>cabal install happy
Resolving dependencies…
Downloading happy-1.19.5…
[1 of 1] Compiling Main ( C:\Users\476458\AppData\Local\Temp\cabal-t
Linking dist\build\happy\happy.exe …
Installing executable(s) in C:\Users\476458\AppData\Roaming\cabal\bin
Installed happy-1.19.5


Not yet sure if the mode is effective. I don’t see any syntax highlighting yet.


Update : Now it looks better