Re: [Haskell-cafe] Correctly setting up emacs + ghc-mod

Yes, but only once on ‘.’ I suspect from your answer I should do it for all directories ? On 20 Apr 2014, at 16:28, Zsolt Dollenstein wrote:

Have you tried M-x haskell-process-unignore?

On Sun, Apr 20, 2014 at 10:20 AM, Arnaud Bailly wrote: This is what I have in my cabal file:

library hs-source-dirs: ., fay-shared exposed-modules: Application Foundation

but I keep getting same error when loading a file that depends on the fay-shared directory (please not that command-line building with cabal runs fine so this is definitely an issue with my emacs settings).

Here is the output I got in haskell interpreter when loading a file that depends on fay-shared/SharedTypes.hs:

GHCi is ignoring: /home/vagrant/yesod-splittest/.ghci (run M-x haskell-process-unignore) The next big Haskell project is about to start! If I break, you can: 1. Restart: M-x haskell-process-restart 2. Configure logging: C-h v haskell-process-log (useful for debugging) 3. General config: M-x customize-mode 4. Hide these tips: C-h v haskell-process-show-debug-tips Changed directory: /home/vagrant/yesod-splittest/ Import.hs:18:18-28: Could not find module `SharedTypes' … Use -v to see a list of the files searched for. Compilation failed. Import.hs:18:18-28: Could not find module `SharedTypes' … Use -v to see a list of the files searched for. Compilation failed. λ>

Thanks Arnaud

On 19 Apr 2014, at 13:05, Andras Slemmer <0slemi0@gmail.com> wrote:

...

If you're using several source directories then simply specify them in your .cabal with hs-source-dirs. So for example if you have a library in src/lib and a test-suite in src/test and your tests use your lib then you'd have something like this in your .cabal

library exposed-modules: Lib hs-source-dirs: src/lib

test-suite sometest type: exitcode-stdio-1.0 main-is: Test.hs hs-source-dirs: src/test src/lib

On 18 April 2014 16:20, Arnaud Bailly wrote: Hello,

I am struggling to get my emacs settings right for doing significant Haskell development, eg. something more involved than a bunch of source files in a single directory. The issue I am running in currently is that when trying to load files in the interpreter, most source paths are missing which means loading inevitably fails. This is especially annoying with tests: To get things working correctly I need to explicitly add in the console

...

:set -iwhere/my/src/are

Is there any configuration I should be aware of in my cabal files or .emacs file that would correctly set the source roots? Am I missing something?

Here is my .emacs configuration. Thanks for any help.

;; haskell coding (require 'auto-complete) (require 'haskell-mode) (require 'haskell-cabal)

(autoload 'ghc-init "ghc" nil t)

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

(eval-after-load "haskell-mode" '(progn (setq haskell-stylish-on-save t) (setq haskell-process-args-cabal-repl '("--ghc-option=-ferror-spans" "--with-ghc=ghci-ng"))

(define-key haskell-mode-map (kbd "C-,") 'haskell-move-nested-left) (define-key haskell-mode-map (kbd "C-.") 'haskell-move-nested-right) (define-key haskell-mode-map (kbd "C-c v c") 'haskell-cabal-visit-file) (define-key haskell-mode-map (kbd "C-c C-c") 'haskell-compile) (define-key haskell-mode-map (kbd "C-x C-d") nil) (setq haskell-font-lock-symbols t)

;; Do this to get a variable in scope (auto-complete-mode)

;; from http://pastebin.com/tJyyEBAS (ac-define-source ghc-mod '((depends ghc) (candidates . (ghc-select-completion-symbol)) (symbol . "s") (cache)))

(defun my-ac-haskell-mode () (setq ac-sources '(ac-source-words-in-same-mode-buffers ac-source-dictionary ac-source-ghc-mod))) (add-hook 'haskell-mode-hook 'my-ac-haskell-mode)

(defun my-haskell-ac-init () (when (member (file-name-extension buffer-file-name) '("hs" "lhs")) (auto-complete-mode t) (setq ac-sources '(ac-source-words-in-same-mode-buffers ac-source-dictionary ac-source-ghc-mod)))) (add-hook 'find-file-hook 'my-haskell-ac-init)))

(add-hook 'haskell-mode-hook 'turn-on-haskell-decl-scan) (add-hook 'haskell-mode-hook 'turn-on-haskell-indentation)

(eval-after-load "which-func" '(add-to-list 'which-func-modes 'haskell-mode))

(eval-after-load "haskell-cabal" '(define-key haskell-cabal-mode-map (kbd "C-c C-c") 'haskell-compile))

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