Initial commit

1 files changed, 48 insertions, 0 deletions

diff --git a/lisp/init-elpa.el b/lisp/init-elpa.el
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+++ b/lisp/init-elpa.el
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+;;; Find and load the correct package.el
+;; When switching between Emacs 23 and 24, we always use the bundled package.el in Emacs 24
+(let ((package-el-site-lisp-dir
+       (expand-file-name "site-lisp/package" user-emacs-directory)))
+  (when (and (file-directory-p package-el-site-lisp-dir)
+             (> emacs-major-version 23))
+    (message "Removing local package.el from load-path to avoid shadowing bundled version")
+    (setq load-path (remove package-el-site-lisp-dir load-path))))
+
+(require 'package)
+
+;; Repositories
+;; ================
+(setq package-archives
+      '(("melpa" . "https://melpa.org/packages/")
+      ;;("melpa-stable" . "https://stable.melpa.org/packages/")
+        ("gnu" . "https://elpa.gnu.org/packages/")
+        ("org" . "https://orgmode.org/elpa/")))
+
+(setq package-archive-priorities
+      '(("melpa" . 4)
+        ("melpa-stable" . 0)
+        ("gnu" . 1)
+        ("org" . 3)))
+;; =================
+
+;;; Find packages if not installed
+;; ================================
+;;; On-demand installation of packages
+(defun require-package (package &optional min-version no-refresh)
+  "Install given PACKAGE, optionally requiring MIN-VERSION.
+If NO-REFRESH is non-nil, the available package lists will not be
+re-downloaded in order to locate PACKAGE."
+  (if (package-installed-p package min-version)
+      t
+    (if (or (assoc package package-archive-contents) no-refresh)
+        (if (boundp 'package-selected-packages)
+            ;; Record this as a package the user installed explicitly
+            (package-install package nil)
+          (package-install package))
+      (progn
+        (package-refresh-contents)
+        (require-package package min-version t)))))
+;; ================================
+
+(package-initialize)
+
+(provide 'init-elpa)