--- /dev/null
+;;; epl.el --- Emacs Package Library -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2013-2015 Sebastian Wiesner
+;; Copyright (C) 1985-1986, 1992, 1994-1995, 1999-2015 Free Software
+
+;; Author: Sebastian Wiesner <swiesner@lunaryorn.com>
+;; Maintainer: Johan Andersson <johan.rejeep@gmail.com>
+;; Sebastian Wiesner <swiesner@lunaryorn.com>
+;; Version: 0.10-cvs
+;; Package-Version: 20180205.2049
+;; Package-Requires: ((cl-lib "0.3"))
+;; Keywords: convenience
+;; URL: http://github.com/cask/epl
+
+;; This file is NOT part of GNU Emacs.
+
+;; 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:
+
+;; A package management library for Emacs, based on package.el.
+
+;; The purpose of this library is to wrap all the quirks and hassle of
+;; package.el into a sane API.
+
+;; The following functions comprise the public interface of this library:
+
+;;; Package directory selection
+
+;; `epl-package-dir' gets the directory of packages.
+
+;; `epl-default-package-dir' gets the default package directory.
+
+;; `epl-change-package-dir' changes the directory of packages.
+
+;;; Package system management
+
+;; `epl-initialize' initializes the package system and activates all
+;; packages.
+
+;; `epl-reset' resets the package system.
+
+;; `epl-refresh' refreshes all package archives.
+
+;; `epl-add-archive' adds a new package archive.
+
+;;; Package objects
+
+;; Struct `epl-requirement' describes a requirement of a package with `name' and
+;; `version' slots.
+
+;; `epl-requirement-version-string' gets a requirement version as string.
+
+;; Struct `epl-package' describes an installed or installable package with a
+;; `name' and some internal `description'.
+
+;; `epl-package-version' gets the version of a package.
+
+;; `epl-package-version-string' gets the version of a package as string.
+
+;; `epl-package-summary' gets the summary of a package.
+
+;; `epl-package-requirements' gets the requirements of a package.
+
+;; `epl-package-directory' gets the installation directory of a package.
+
+;; `epl-package-from-buffer' creates a package object for the package contained
+;; in the current buffer.
+
+;; `epl-package-from-file' creates a package object for a package file, either
+;; plain lisp or tarball.
+
+;; `epl-package-from-descriptor-file' creates a package object for a package
+;; description (i.e. *-pkg.el) file.
+
+;;; Package database access
+
+;; `epl-package-installed-p' determines whether a package is installed, either
+;; built-in or explicitly installed.
+
+;; `epl-package-outdated-p' determines whether a package is outdated, that is,
+;; whether a package with a higher version number is available.
+
+;; `epl-built-in-packages', `epl-installed-packages', `epl-outdated-packages'
+;; and `epl-available-packages' get all packages built-in, installed, outdated,
+;; or available for installation respectively.
+
+;; `epl-find-built-in-package', `epl-find-installed-packages' and
+;; `epl-find-available-packages' find built-in, installed and available packages
+;; by name.
+
+;; `epl-find-upgrades' finds all upgradable packages.
+
+;; `epl-built-in-p' return true if package is built-in to Emacs.
+
+;;; Package operations
+
+;; `epl-install-file' installs a package file.
+
+;; `epl-package-install' installs a package.
+
+;; `epl-package-delete' deletes a package.
+
+;; `epl-upgrade' upgrades packages.
+
+;;; Code:
+
+(require 'cl-lib)
+(require 'package)
+
+\f
+(unless (fboundp #'define-error)
+ ;; `define-error' for 24.3 and earlier, copied from subr.el
+ (defun define-error (name message &optional parent)
+ "Define NAME as a new error signal.
+MESSAGE is a string that will be output to the echo area if such an error
+is signaled without being caught by a `condition-case'.
+PARENT is either a signal or a list of signals from which it inherits.
+Defaults to `error'."
+ (unless parent (setq parent 'error))
+ (let ((conditions
+ (if (consp parent)
+ (apply #'append
+ (mapcar (lambda (parent)
+ (cons parent
+ (or (get parent 'error-conditions)
+ (error "Unknown signal `%s'" parent))))
+ parent))
+ (cons parent (get parent 'error-conditions)))))
+ (put name 'error-conditions
+ (delete-dups (copy-sequence (cons name conditions))))
+ (when message (put name 'error-message message)))))
+
+(defsubst epl--package-desc-p (package)
+ "Whether PACKAGE is a `package-desc' object.
+
+Like `package-desc-p', but return nil, if `package-desc-p' is not
+defined as function."
+ (and (fboundp 'package-desc-p) (package-desc-p package)))
+
+\f
+;;; EPL errors
+(define-error 'epl-error "EPL error")
+
+(define-error 'epl-invalid-package "Invalid EPL package" 'epl-error)
+
+(define-error 'epl-invalid-package-file "Invalid EPL package file"
+ 'epl-invalid-package)
+
+\f
+;;; Package directory
+(defun epl-package-dir ()
+ "Get the directory of packages."
+ package-user-dir)
+
+(defun epl-default-package-dir ()
+ "Get the default directory of packages."
+ (eval (car (get 'package-user-dir 'standard-value))))
+
+(defun epl-change-package-dir (directory)
+ "Change the directory of packages to DIRECTORY."
+ (setq package-user-dir directory)
+ (epl-initialize))
+
+\f
+;;; Package system management
+(defvar epl--load-path-before-initialize nil
+ "Remember the load path for `epl-reset'.")
+
+(defun epl-initialize (&optional no-activate)
+ "Load Emacs Lisp packages and activate them.
+
+With NO-ACTIVATE non-nil, do not activate packages."
+ (setq epl--load-path-before-initialize load-path)
+ (package-initialize no-activate))
+
+(defalias 'epl-refresh 'package-refresh-contents)
+
+(defun epl-add-archive (name url)
+ "Add a package archive with NAME and URL."
+ (add-to-list 'package-archives (cons name url)))
+
+(defun epl-reset ()
+ "Reset the package system.
+
+Clear the list of installed and available packages, the list of
+package archives and reset the package directory."
+ (setq package-alist nil
+ package-archives nil
+ package-archive-contents nil
+ load-path epl--load-path-before-initialize)
+ (when (boundp 'package-obsolete-alist) ; Legacy package.el
+ (setq package-obsolete-alist nil))
+ (epl-change-package-dir (epl-default-package-dir)))
+
+\f
+;;; Package structures
+(cl-defstruct (epl-requirement
+ (:constructor epl-requirement-create))
+ "Structure describing a requirement.
+
+Slots:
+
+`name' The name of the required package, as symbol.
+
+`version' The version of the required package, as version list."
+ name
+ version)
+
+(defun epl-requirement-version-string (requirement)
+ "The version of a REQUIREMENT, as string."
+ (package-version-join (epl-requirement-version requirement)))
+
+(cl-defstruct (epl-package (:constructor epl-package-create))
+ "Structure representing a package.
+
+Slots:
+
+`name' The package name, as symbol.
+
+`description' The package description.
+
+The format package description varies between package.el
+variants. For `package-desc' variants, it is simply the
+corresponding `package-desc' object. For legacy variants, it is
+a vector `[VERSION REQS DOCSTRING]'.
+
+Do not access `description' directly, but instead use the
+`epl-package' accessors."
+ name
+ description)
+
+(defmacro epl-package-as-description (var &rest body)
+ "Cast VAR to a package description in BODY.
+
+VAR is a symbol, bound to an `epl-package' object. This macro
+casts this object to the `description' object, and binds the
+description to VAR in BODY."
+ (declare (indent 1))
+ (unless (symbolp var)
+ (signal 'wrong-type-argument (list #'symbolp var)))
+ `(if (epl-package-p ,var)
+ (let ((,var (epl-package-description ,var)))
+ ,@body)
+ (signal 'wrong-type-argument (list #'epl-package-p ,var))))
+
+(defsubst epl-package--package-desc-p (package)
+ "Whether the description of PACKAGE is a `package-desc'."
+ (epl--package-desc-p (epl-package-description package)))
+
+(defun epl-package-version (package)
+ "Get the version of PACKAGE, as version list."
+ (epl-package-as-description package
+ (cond
+ ((fboundp 'package-desc-version) (package-desc-version package))
+ ;; Legacy
+ ((fboundp 'package-desc-vers)
+ (let ((version (package-desc-vers package)))
+ (if (listp version) version (version-to-list version))))
+ (:else (error "Cannot get version from %S" package)))))
+
+(defun epl-package-version-string (package)
+ "Get the version from a PACKAGE, as string."
+ (package-version-join (epl-package-version package)))
+
+(defun epl-package-summary (package)
+ "Get the summary of PACKAGE, as string."
+ (epl-package-as-description package
+ (cond
+ ((fboundp 'package-desc-summary) (package-desc-summary package))
+ ((fboundp 'package-desc-doc) (package-desc-doc package)) ; Legacy
+ (:else (error "Cannot get summary from %S" package)))))
+
+(defsubst epl-requirement--from-req (req)
+ "Create a `epl-requirement' from a `package-desc' REQ."
+ (let ((version (cadr req)))
+ (epl-requirement-create :name (car req)
+ :version (if (listp version) version
+ (version-to-list version)))))
+
+(defun epl-package-requirements (package)
+ "Get the requirements of PACKAGE.
+
+The requirements are a list of `epl-requirement' objects."
+ (epl-package-as-description package
+ (mapcar #'epl-requirement--from-req (package-desc-reqs package))))
+
+(defun epl-package-directory (package)
+ "Get the directory PACKAGE is installed to.
+
+Return the absolute path of the installation directory of
+PACKAGE, or nil, if PACKAGE is not installed."
+ (cond
+ ((fboundp 'package-desc-dir)
+ (package-desc-dir (epl-package-description package)))
+ ((fboundp 'package--dir)
+ (package--dir (symbol-name (epl-package-name package))
+ (epl-package-version-string package)))
+ (:else (error "Cannot get package directory from %S" package))))
+
+(defun epl-package-->= (pkg1 pkg2)
+ "Determine whether PKG1 is before PKG2 by version."
+ (not (version-list-< (epl-package-version pkg1)
+ (epl-package-version pkg2))))
+
+(defun epl-package--from-package-desc (package-desc)
+ "Create an `epl-package' from a PACKAGE-DESC.
+
+PACKAGE-DESC is a `package-desc' object, from recent package.el
+variants."
+ (if (and (fboundp 'package-desc-name)
+ (epl--package-desc-p package-desc))
+ (epl-package-create :name (package-desc-name package-desc)
+ :description package-desc)
+ (signal 'wrong-type-argument (list 'epl--package-desc-p package-desc))))
+
+(defun epl-package--parse-info (info)
+ "Parse a package.el INFO."
+ (if (epl--package-desc-p info)
+ (epl-package--from-package-desc info)
+ ;; For legacy package.el, info is a vector [NAME REQUIRES DESCRIPTION
+ ;; VERSION COMMENTARY]. We need to re-shape this vector into the
+ ;; `package-alist' format [VERSION REQUIRES DESCRIPTION] to attach it to the
+ ;; new `epl-package'.
+ (let ((name (intern (aref info 0)))
+ (info (vector (aref info 3) (aref info 1) (aref info 2))))
+ (epl-package-create :name name :description info))))
+
+(defun epl-package-from-buffer (&optional buffer)
+ "Create an `epl-package' object from BUFFER.
+
+BUFFER defaults to the current buffer.
+
+Signal `epl-invalid-package' if the buffer does not contain a
+valid package file."
+ (let ((info (with-current-buffer (or buffer (current-buffer))
+ (condition-case err
+ (package-buffer-info)
+ (error (signal 'epl-invalid-package (cdr err)))))))
+ (epl-package--parse-info info)))
+
+(defun epl-package-from-lisp-file (file-name)
+ "Parse the package headers the file at FILE-NAME.
+
+Return an `epl-package' object with the header metadata."
+ (with-temp-buffer
+ (insert-file-contents file-name)
+ (condition-case err
+ (epl-package-from-buffer (current-buffer))
+ ;; Attach file names to invalid package errors
+ (epl-invalid-package
+ (signal 'epl-invalid-package-file (cons file-name (cdr err))))
+ ;; Forward other errors
+ (error (signal (car err) (cdr err))))))
+
+(defun epl-package-from-tar-file (file-name)
+ "Parse the package tarball at FILE-NAME.
+
+Return a `epl-package' object with the meta data of the tarball
+package in FILE-NAME."
+ (condition-case nil
+ ;; In legacy package.el, `package-tar-file-info' takes the name of the tar
+ ;; file to parse as argument. In modern package.el, it has no arguments
+ ;; and works on the current buffer. Hence, we just try to call the legacy
+ ;; version, and if that fails because of a mismatch between formal and
+ ;; actual arguments, we use the modern approach. To avoid spurious
+ ;; signature warnings by the byte compiler, we suppress warnings when
+ ;; calling the function.
+ (epl-package--parse-info (with-no-warnings
+ (package-tar-file-info file-name)))
+ (wrong-number-of-arguments
+ (with-temp-buffer
+ (insert-file-contents-literally file-name)
+ ;; Switch to `tar-mode' to enable extraction of the file. Modern
+ ;; `package-tar-file-info' relies on `tar-mode', and signals an error if
+ ;; called in a buffer with a different mode.
+ (tar-mode)
+ (epl-package--parse-info (with-no-warnings
+ (package-tar-file-info)))))))
+
+(defun epl-package-from-file (file-name)
+ "Parse the package at FILE-NAME.
+
+Return an `epl-package' object with the meta data of the package
+at FILE-NAME."
+ (if (string-match-p (rx ".tar" string-end) file-name)
+ (epl-package-from-tar-file file-name)
+ (epl-package-from-lisp-file file-name)))
+
+(defun epl-package--parse-descriptor-requirement (requirement)
+ "Parse a REQUIREMENT in a package descriptor."
+ ;; This function is only called on legacy package.el. On package-desc
+ ;; package.el, we just let package.el do the work.
+ (cl-destructuring-bind (name version-string) requirement
+ (list name (version-to-list version-string))))
+
+(defun epl-package-from-descriptor-file (descriptor-file)
+ "Load a `epl-package' from a package DESCRIPTOR-FILE.
+
+A package descriptor is a file defining a new package. Its name
+typically ends with -pkg.el."
+ (with-temp-buffer
+ (insert-file-contents descriptor-file)
+ (goto-char (point-min))
+ (let ((sexp (read (current-buffer))))
+ (unless (eq (car sexp) 'define-package)
+ (error "%S is no valid package descriptor" descriptor-file))
+ (if (and (fboundp 'package-desc-from-define)
+ (fboundp 'package-desc-name))
+ ;; In Emacs snapshot, we can conveniently call a function to parse the
+ ;; descriptor
+ (let ((desc (apply #'package-desc-from-define (cdr sexp))))
+ (epl-package-create :name (package-desc-name desc)
+ :description desc))
+ ;; In legacy package.el, we must manually deconstruct the descriptor,
+ ;; because the load function has eval's the descriptor and has a lot of
+ ;; global side-effects.
+ (cl-destructuring-bind
+ (name version-string summary requirements) (cdr sexp)
+ (epl-package-create
+ :name (intern name)
+ :description
+ (vector (version-to-list version-string)
+ (mapcar #'epl-package--parse-descriptor-requirement
+ ;; Strip the leading `quote' from the package list
+ (cadr requirements))
+ summary)))))))
+
+\f
+;;; Package database access
+(defun epl-package-installed-p (package &optional min-version)
+ "Determine whether a PACKAGE, of MIN-VERSION or newer, is installed.
+
+PACKAGE is either a package name as symbol, or a package object.
+When a explicit MIN-VERSION is provided it overwrites the version of the PACKAGE object."
+ (let ((name (if (epl-package-p package)
+ (epl-package-name package)
+ package))
+ (min-version (or min-version (and (epl-package-p package)
+ (epl-package-version package)))))
+ (package-installed-p name min-version)))
+
+(defun epl--parse-built-in-entry (entry)
+ "Parse an ENTRY from the list of built-in packages.
+
+Return the corresponding `epl-package' object."
+ (if (fboundp 'package--from-builtin)
+ ;; In package-desc package.el, convert the built-in package to a
+ ;; `package-desc' and convert that to an `epl-package'
+ (epl-package--from-package-desc (package--from-builtin entry))
+ (epl-package-create :name (car entry) :description (cdr entry))))
+
+(defun epl-built-in-packages ()
+ "Get all built-in packages.
+
+Return a list of `epl-package' objects."
+ ;; This looks mighty strange, but it's the only way to force package.el to
+ ;; build the list of built-in packages. Without this, `package--builtins'
+ ;; might be empty.
+ (package-built-in-p 'foo)
+ (mapcar #'epl--parse-built-in-entry package--builtins))
+
+(defun epl-find-built-in-package (name)
+ "Find a built-in package with NAME.
+
+NAME is a package name, as symbol.
+
+Return the built-in package as `epl-package' object, or nil if
+there is no built-in package with NAME."
+ (when (package-built-in-p name)
+ ;; We must call `package-built-in-p' *before* inspecting
+ ;; `package--builtins', because otherwise `package--builtins' might be
+ ;; empty.
+ (epl--parse-built-in-entry (assq name package--builtins))))
+
+(defun epl-package-outdated-p (package)
+ "Determine whether a PACKAGE is outdated.
+
+A package is outdated, if there is an available package with a
+higher version.
+
+PACKAGE is either a package name as symbol, or a package object.
+In the former case, test the installed or built-in package with
+the highest version number, in the later case, test the package
+object itself.
+
+Return t, if the package is outdated, or nil otherwise."
+ (let* ((package (if (epl-package-p package)
+ package
+ (or (car (epl-find-installed-packages package))
+ (epl-find-built-in-package package))))
+ (available (car (epl-find-available-packages
+ (epl-package-name package)))))
+ (and package available (version-list-< (epl-package-version package)
+ (epl-package-version available)))))
+
+(defun epl--parse-package-list-entry (entry)
+ "Parse a list of packages from ENTRY.
+
+ENTRY is a single entry in a package list, e.g. `package-alist',
+`package-archive-contents', etc. Typically it is a cons cell,
+but the exact format varies between package.el versions. This
+function tries to parse all known variants.
+
+Return a list of `epl-package' objects parsed from ENTRY."
+ (let ((descriptions (cdr entry)))
+ (cond
+ ((listp descriptions)
+ (sort (mapcar #'epl-package--from-package-desc descriptions)
+ #'epl-package-->=))
+ ;; Legacy package.el has just a single package in an entry, which is a
+ ;; standard description vector
+ ((vectorp descriptions)
+ (list (epl-package-create :name (car entry)
+ :description descriptions)))
+ (:else (error "Cannot parse entry %S" entry)))))
+
+(defun epl-installed-packages ()
+ "Get all installed packages.
+
+Return a list of package objects."
+ (apply #'append (mapcar #'epl--parse-package-list-entry package-alist)))
+
+(defsubst epl--filter-outdated-packages (packages)
+ "Filter outdated packages from PACKAGES."
+ (let (res)
+ (dolist (package packages)
+ (when (epl-package-outdated-p package)
+ (push package res)))
+ (nreverse res)))
+
+(defun epl-outdated-packages ()
+ "Get all outdated packages, as in `epl-package-outdated-p'.
+
+Return a list of package objects."
+ (epl--filter-outdated-packages (epl-installed-packages)))
+
+(defsubst epl--find-package-in-list (name list)
+ "Find a package by NAME in a package LIST.
+
+Return a list of corresponding `epl-package' objects."
+ (let ((entry (assq name list)))
+ (when entry
+ (epl--parse-package-list-entry entry))))
+
+(defun epl-find-installed-package (name)
+ "Find the latest installed package by NAME.
+
+NAME is a package name, as symbol.
+
+Return the installed package with the highest version number as
+`epl-package' object, or nil, if no package with NAME is
+installed."
+ (car (epl-find-installed-packages name)))
+(make-obsolete 'epl-find-installed-package 'epl-find-installed-packages "0.7")
+
+(defun epl-find-installed-packages (name)
+ "Find all installed packages by NAME.
+
+NAME is a package name, as symbol.
+
+Return a list of all installed packages with NAME, sorted by
+version number in descending order. Return nil, if there are no
+packages with NAME."
+ (epl--find-package-in-list name package-alist))
+
+(defun epl-available-packages ()
+ "Get all packages available for installation.
+
+Return a list of package objects."
+ (apply #'append (mapcar #'epl--parse-package-list-entry
+ package-archive-contents)))
+
+(defun epl-find-available-packages (name)
+ "Find available packages for NAME.
+
+NAME is a package name, as symbol.
+
+Return a list of available packages for NAME, sorted by version
+number in descending order. Return nil, if there are no packages
+for NAME."
+ (epl--find-package-in-list name package-archive-contents))
+
+(cl-defstruct (epl-upgrade
+ (:constructor epl-upgrade-create))
+ "Structure describing an upgradable package.
+Slots:
+
+`installed' The installed package
+
+`available' The package available for installation."
+ installed
+ available)
+
+(defun epl-find-upgrades (&optional packages)
+ "Find all upgradable PACKAGES.
+
+PACKAGES is a list of package objects to upgrade, defaulting to
+all installed packages.
+
+Return a list of `epl-upgrade' objects describing all upgradable
+packages."
+ (let ((packages (or packages (epl-installed-packages)))
+ upgrades)
+ (dolist (pkg packages)
+ (let* ((version (epl-package-version pkg))
+ (name (epl-package-name pkg))
+ ;; Find the latest available package for NAME
+ (available-pkg (car (epl-find-available-packages name)))
+ (available-version (when available-pkg
+ (epl-package-version available-pkg))))
+ (when (and available-version (version-list-< version available-version))
+ (push (epl-upgrade-create :installed pkg
+ :available available-pkg)
+ upgrades))))
+ (nreverse upgrades)))
+
+(defalias 'epl-built-in-p 'package-built-in-p)
+
+\f
+;;; Package operations
+
+(defun epl-install-file (file)
+ "Install a package from FILE, like `package-install-file'."
+ (interactive (advice-eval-interactive-spec
+ (cadr (interactive-form #'package-install-file))))
+ (apply #'package-install-file (list file))
+ (let ((package (epl-package-from-file file)))
+ (unless (epl-package--package-desc-p package)
+ (epl--kill-autoload-buffer package))))
+
+(defun epl--kill-autoload-buffer (package)
+ "Kill the buffer associated with autoloads for PACKAGE."
+ (let* ((auto-name (format "%s-autoloads.el" (epl-package-name package)))
+ (generated-autoload-file (expand-file-name auto-name (epl-package-directory package)))
+ (buf (find-buffer-visiting generated-autoload-file)))
+ (when buf (kill-buffer buf))))
+
+(defun epl-package-install (package &optional force)
+ "Install a PACKAGE.
+
+PACKAGE is a `epl-package' object. If FORCE is given and
+non-nil, install PACKAGE, even if it is already installed."
+ (when (or force (not (epl-package-installed-p package)))
+ (if (epl-package--package-desc-p package)
+ (package-install (epl-package-description package))
+ ;; The legacy API installs by name. We have no control over versioning,
+ ;; etc.
+ (package-install (epl-package-name package))
+ (epl--kill-autoload-buffer package))))
+
+(defun epl-package-delete (package)
+ "Delete a PACKAGE.
+
+PACKAGE is a `epl-package' object to delete."
+ ;; package-delete allows for packages being trashed instead of fully deleted.
+ ;; Let's prevent his silly behavior
+ (let ((delete-by-moving-to-trash nil))
+ ;; The byte compiler will warn us that we are calling `package-delete' with
+ ;; the wrong number of arguments, since it can't infer that we guarantee to
+ ;; always call the correct version. Thus we suppress all warnings when
+ ;; calling `package-delete'. I wish there was a more granular way to
+ ;; disable just that specific warning, but it is what it is.
+ (if (epl-package--package-desc-p package)
+ (with-no-warnings
+ (package-delete (epl-package-description package)))
+ ;; The legacy API deletes by name (as string!) and version instead by
+ ;; descriptor. Hence `package-delete' takes two arguments. For some
+ ;; insane reason, the arguments are strings here!
+ (let ((name (symbol-name (epl-package-name package)))
+ (version (epl-package-version-string package)))
+ (with-no-warnings
+ (package-delete name version))
+ ;; Legacy package.el does not remove the deleted package
+ ;; from the `package-alist', so we do it manually here.
+ (let ((pkg (assq (epl-package-name package) package-alist)))
+ (when pkg
+ (setq package-alist (delq pkg package-alist))))))))
+
+(defun epl-upgrade (&optional packages preserve-obsolete)
+ "Upgrade PACKAGES.
+
+PACKAGES is a list of package objects to upgrade, defaulting to
+all installed packages.
+
+The old versions of the updated packages are deleted, unless
+PRESERVE-OBSOLETE is non-nil.
+
+Return a list of all performed upgrades, as a list of
+`epl-upgrade' objects."
+ (let ((upgrades (epl-find-upgrades packages)))
+ (dolist (upgrade upgrades)
+ (epl-package-install (epl-upgrade-available upgrade) 'force)
+ (unless preserve-obsolete
+ (epl-package-delete (epl-upgrade-installed upgrade))))
+ upgrades))
+
+(provide 'epl)
+
+;;; epl.el ends here
projects / emacs-init.git / blobdiff