flycheck definition for sass-lint

sass-lint-flycheck.el

(flycheck-def-config-file-var flycheck-sass-lintrc sass-lint ".sass-lint.yml"
  :safe #'stringp
  :package-version '(flycheck . "0.23"))

(flycheck-define-checker sass-lint
  "A Sass syntax checker using sass-lint.

See URL `https://github.com/sasstools/sass-lint'."
  :command ("sass-lint" "-f" "unix"
            (config-file "-c" flycheck-sass-lintrc)
            "-v" "-q")
  :standard-input t
  :error-patterns
  ((error line-start (file-name) ":" line ":" column ": " (message) line-end))
  :modes sass-mode
  :next-checkers ((error . sass)
                  (warning . sass)))

(add-to-list 'flycheck-checkers 'sass-lint)