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path: root/emacs.d/inits/50_flycheck.el
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(use-package flycheck
  :ensure t
  :defer t
  :preface (progn
             (defun check-source-predicate ()
               (and (executable-find "check.pex")
                    (buffer-file-name)
                    (string-match "src/source/.*\.py$" (buffer-file-name)))))
  :init
  (progn
    (add-hook 'prog-mode-hook 'flycheck-mode)
    (setq-default flycheck-disabled-checkers '(emacs-lisp-checkdoc)))
  :config
  (progn
    (flycheck-define-checker source-check
      "A syntax checker for python source code in Source, using `check.pex'"
      :command ("check.pex" source)
      ;;; errors are reported like this:
      ;;; E241:ERROR   <file name>:<line> <message>
      :error-patterns ((error line-start (1+ nonl) ":ERROR" (1+ nonl) ":" line (message) line-end))
      :predicate check-source-predicate
      :modes (python-mode))
    (add-to-list 'flycheck-checkers 'source-check)))

(use-package flycheck-pos-tip
  :defer t
  :init
  (progn
    (eval-after-load 'feature-flycheck
      '(setq-default flycheck-display-errors-function #'flycheck-pos-tip-error-messages)))
  :ensure t)