.dir-locals.el

;;; Directory Local Variables
;;; For more information see (info "(emacs) Directory Variables")

((nil
  (eval progn
	(setq default-directory
	      (locate-dominating-file buffer-file-name ".dir-locals.el"))
	(load-file "./shell.el"))))

shell.el

(message "shell.el evaluating")

;;;;;;;;;;;
;;;Magit;;;
;;;;;;;;;;;
(require 'magit)

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;Autocomplete with company;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(require 'company)
(add-hook 'haskell-mode-hook 'company-mode)
(add-to-list 'company-backends 'company-ghc)
(custom-set-variables '(company-ghc-show-info t))

;;;;;;;;;;;;;
;;;ghc-mod;;;
;;;;;;;;;;;;;
(add-hook 'haskell-mode-hook (lambda () (ghc-init)))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;Structured Haskell Mode;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(add-hook 'haskell-mode-hook 'structured-haskell-mode)

;;;;;;;;;;;;;;;;;;;;;;;;;
;;;Rainbow parentheses;;;
;;;;;;;;;;;;;;;;;;;;;;;;;
(require 'rainbow-delimiters)
(add-hook 'haskell-mode-hook #'rainbow-delimiters-mode)

;;;;;;;;;;;;;;
;;;CUA mode;;;
;;;;;;;;;;;;;;
(cua-mode t)

(message "shell.el finished evaluating")

shell.nix

{ nixpkgs ? import <nixpkgs> {}, compiler ? "ghc7102" }:
let
  inherit (nixpkgs) pkgs;
  ghc = pkgs.haskell.packages.${compiler}.ghcWithPackages (ps: with ps; 
[ ghc-mod mtl lens parsec QuickCheck ansi-wl-pprint text text-format 
alex 
happy monad-logger hlint unordered-containers ekg haskeline 
/*smartcheck*/ sbv tasty optparse-applicative configurator structured-haskell-mode]);
  texlive = pkgs.texLiveFull;
  emacs = let withGTK3 = true; in pkgs.emacsWithPackages (with 
      pkgs.emacsPackagesNg; [ghc-mod haskell-mode structured-haskell-mode rainbow-delimiters company-ghc flycheck-haskell magit]);
  llvm = pkgs.llvm_35;
  polly = pkgs.llvmPackages_35.polly;
  git = pkgs.git;
  z3 = pkgs.z3;
  cabal2nix = pkgs.cabal2nix;
in
pkgs.stdenv.mkDerivation {
  name = "haskell-env-1";
  buildInputs = [ghc
  texlive
  emacs
  llvm
  polly
  git
  z3
  cabal2nix
  ];
  
  shellHook = "eval $(egrep ^export ${ghc}/bin/ghc)";
}