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;;; use-package-lint.el --- Attempt to find errors in use-package declarations -*- lexical-binding: t; -*-
;; Copyright (C) 2012-2017 John Wiegley
;; Author: John Wiegley <johnw@newartisans.com>
;; Maintainer: John Wiegley <johnw@newartisans.com>
;; Created: 17 Jun 2012
;; Modified: 3 Dec 2017
;; Version: 1.0
;; Package-Requires: ((emacs "24.3") (use-package "2.4"))
;; Keywords: dotemacs startup speed config package
;; URL: https://github.com/jwiegley/use-package
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation; either version 3, or (at
;; your option) any later version.
;; This program is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;; General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; Provides the command `M-x use-package-lint'.
;;; Code:
(require 'cl-lib)
(require 'use-package-core)
(defun use-package-lint-declaration (name plist)
(dolist (path (plist-get plist :load-path))
(unless (file-exists-p path)
(display-warning
'use-package
(format "%s :load-path does not exist: %s"
name path) :error)))
(unless (or (plist-member plist :disabled)
(plist-get plist :no-require)
(locate-library (use-package-as-string name) nil
(plist-get plist :load-path)))
(display-warning
'use-package
(format "%s module cannot be located" name) :error))
;; (dolist (command (plist-get plist :commands))
;; (unless (string= (find-lisp-object-file-name command nil)
;; (locate-library (use-package-as-string name) nil
;; (plist-get plist :load-path)))
;; (display-warning
;; 'use-package
;; (format "%s :command is from different path: %s"
;; name (symbol-name command)) :error)))
)
;;;###autoload
(defun use-package-lint ()
"Check for errors in use-package declarations.
For example, if the module's `:if' condition is met, but even
with the specified `:load-path' the module cannot be found."
(interactive)
(save-excursion
(goto-char (point-min))
(let ((re (eval use-package-form-regexp-eval)))
(while (re-search-forward re nil t)
(goto-char (match-beginning 0))
(let ((decl (read (current-buffer))))
(when (eq (car decl) 'use-package)
(use-package-lint-declaration
(use-package-as-string (cadr decl))
(use-package-normalize-keywords
(cadr decl) (cddr decl)))))))))
(provide 'use-package-lint)
;;; use-package-lint.el ends here
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