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パッケージ一覧を helmインタフェースで見る

emacs helm

package.elには package-list-packagesというコマンドがあって
これでパッケージ一覧を見ることができるんですが、パッケージも
増えてきたということもあって、普通の検索では若干探すの面倒
になってきました。なんで helmインタフェースを使って絞り込む
ものを作ってみました。

コード

;;; helm-package.el ---

;; Copyright (C) 2012 by Syohei YOSHIDA

;; Author: Syohei YOSHIDA <syohex@gmail.com>
;; URL:

;; 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 of the License, 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 this program.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;;; Code:

(eval-when-compile
  (require 'cl))

(require 'helm)
(require 'package)

(defvar helm-c-package-source
  '((name . "helm package")
    (init . (lambda ()
              (unless package--initialized
                (package-initialize t))))
    (candidates . (lambda ()
                    (let ((copyed (copy-sequence package-archive-contents)))
                      (loop with sorted = (sort copyed (lambda (a b)
                                                         (string< (car a) (car b))))
                            for candidate in sorted
                            for package = (symbol-name (car candidate))
                            for name = (if (> (length package) 30)
                                           (concat (substring package 0 27) "...")
                                         package)
                            for desc = (truncate-string-to-width
                                        (aref (cdr candidate) 2) (- (frame-width) 32))
                            collect (cons (format "%-30s| %s" name desc) package)))))
    (action . (lambda (c) (package-install c)))
    (candidate-number-limit . 9999)
    (volatile)))

(defun helm-package ()
  (interactive)
  (let ((buf (get-buffer-create "*helm-package*")))
    (helm :sources '(helm-c-package-source) :buffer buf)))

(provide 'helm-package)

;;; helm-package.el ends here

設定

helmと package.elの設定を事前にしておく必要があります。

(require 'helm-config)

(require 'package)
(add-to-list 'package-archives '("melpa" . "http://melpa.milkbox.net/packages/") t)
(add-to-list 'package-archives '("marmalade" . "http://marmalade-repo.org/packages/"))
(package-initialize)

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