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   1 ;;; package-admin.el --- Installation and Maintenance of XEmacs packages
   2
   3 ;; Copyright (C) 1997 by Free Software Foundation, Inc.
   4 ;; Copyright (C) 2003, Steve Youngs.
   5
   6 ;; Author: SL Baur <steve@xemacs.org>
   7 ;; Keywords: internal
   8
   9 ;; This file is part of XEmacs.
  10
  11 ;; XEmacs is free software; you can redistribute it and/or modify it
  12 ;; under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15
  16 ;; XEmacs is distributed in the hope that it will be useful, but
  17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19 ;; General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with XEmacs; see the file COPYING.  If not, write to the Free
  23 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  24 ;; 02111-1307, USA.
  25
  26 ;;; Synched up with: Not in FSF
  27
  28 ;;; Commentary:
  29
  30 ;; First pass at lisp front end to package maintenance.
  31
  32 ;;; Code:
  33
  34 (require 'config)
  35
  36 (defvar package-admin-xemacs (concat invocation-directory invocation-name)
  37   "Location of XEmacs binary to use.")
  38
  39 (defvar package-admin-temp-buffer "*Package Output*"
  40   "Temporary buffer where output of backend commands is saved.")
  41
  42 (defvar package-admin-install-function (if (eq system-type 'windows-nt)
  43                                            'package-admin-install-function-mswindows
  44                                          'package-admin-default-install-function)
  45   "The function to call to install a package.
  46 Three args are passed: FILENAME PKG-DIR BUFFER
  47 Install package FILENAME into directory PKG-DIR, with any messages output
  48 to buffer BUFFER.")
  49
  50 (defvar package-admin-error-messages '(
  51                                        "No space left on device"
  52                                        "No such file or directory"
  53                                        "Filename too long"
  54                                        "Read-only file system"
  55                                        "File too large"
  56                                        "Too many open files"
  57                                        "Not enough space"
  58                                        "Permission denied"
  59                                        "Input/output error"
  60                                        "Out of memory"
  61                                        "Unable to create directory"
  62                                        "Directory checksum error"
  63                                        "Cannot exclusively open file"
  64                                        "corrupted file"
  65                                        "incomplete .* tree"
  66                                        "Bad table"
  67                                        "corrupt input"
  68                                        "invalid compressed data"
  69                                        "too many leaves in Huffman tree"
  70                                        "not a valid zip file"
  71                                        "first entry not deflated or stored"
  72                                        "encrypted file --"
  73                                        "unexpected end of file"
  74                                        )
  75   "Regular expressions of possible error messages.
  76 After each package extraction, the `package-admin-temp-buffer' buffer is
  77 scanned for these messages.  An error code is returned if one of these are
  78 found.
  79
  80 This is awful, but it exists because error return codes aren't reliable
  81 under MS Windows.")
  82
  83 (defvar package-admin-tar-filename-regexps
  84   '(
  85     ;; GNU tar:
  86     ;; drwxrwxr-x john/doe 123 1997-02-18 15:48 pathname
  87     "\\S-+\\s-+[-a-z0-9_/]+\\s-+[0-9]+\\s-+[-0-9]+\\s-+[0-9:]+\\s-+\\(\\S-.*\\)"
  88     ;; HP-UX & SunOS tar:
  89     ;; rwxrwxr-x 501/501    123 Feb 18 15:46 1997 pathname
  90     ;; Solaris tar (phooey!):
  91     ;; rwxrwxr-x501/501    123 Feb 18 15:46 1997 pathname
  92     ;; AIX tar:
  93     ;; -rw-r--r-- 147 1019   32919 Mar 26 12:00:09 1992 pathname
  94     "\\S-+\\s-*[-a-z0-9_]+[/ ][-a-z0-9_]+\\s-+[0-9]+\\s-+[a-z][a-z][a-z]\\s-+[0-9]+\\s-+[0-9:]+\\s-+[0-9]+\\s-+\\(\\S-.*\\)"
  95
  96     ;; djtar:
  97     ;; drwx Aug 31 02:01:41 1998       123 pathname
  98     "\\S-+\\s-+[a-z][a-z][a-z]\\s-+[0-9]+\\s-+[0-9:]+\\s-+[0-9]+\\s-+[0-9]+\\s-+\\(\\S-.*\\)"
  99
 100     )
 101   "List of regexps to use to search for tar filenames.
 102 Note that \"\\(\" and \"\\)\" must be used to delimit the pathname (as
 103 match #1).  Don't put \"^\" to match the beginning of the line; this
 104 is already implicit, as `looking-at' is used.  Filenames can,
 105 unfortunately, contain spaces, so be careful in constructing any
 106 regexps.")
 107
 108 (defvar package-install-hook nil
 109   "*List of hook functions to be called when a new package is successfully
 110 installed. The hook function is passed two arguments: the package name, and
 111 the install directory.")
 112
 113 (defvar package-delete-hook nil
 114   "*List of hook functions to be called when a package is deleted. The
 115 hook is called *before* the package is deleted. The hook function is passed
 116 two arguments: the package name, and the install directory.")
 117
 118 (defun package-admin-install-function-mswindows (file pkg-dir buffer)
 119   "Install function for mswindows."
 120   (let ((default-directory (file-name-as-directory pkg-dir)))
 121     (unless (file-directory-p default-directory)
 122       (make-directory default-directory t))
 123     (call-process "minitar" nil buffer t file)))
 124
 125 (defun package-admin-default-install-function (filename pkg-dir buffer)
 126   "Default function to install a package.
 127 Install package FILENAME into directory PKG-DIR, with any messages output
 128 to BUFFER."
 129   (let* ((pkg-dir (file-name-as-directory pkg-dir))
 130          (default-directory pkg-dir)
 131          (filename (expand-file-name filename)))
 132     (unless (file-directory-p pkg-dir)
 133       (make-directory pkg-dir t))
 134     ;; Don't assume GNU tar.
 135     (if (shell-command (concat "gunzip -c " filename " | tar xvf -") buffer)
 136         0
 137       1)))
 138
 139 ;; A few things needed by the following 2 functions.
 140 (eval-when-compile
 141   (require 'packages)
 142   (autoload 'package-get-info "package-get")
 143   (autoload 'paths-decode-directory-path "find-paths")
 144   (defvar package-get-install-to-user-init-directory))
 145
 146 (defun package-admin-find-top-directory (type &optional user-dir)
 147   "Return the top level directory for a package.
 148
 149 Argument TYPE is a symbol that determines the type of package we're
 150 trying to find a directory for.
 151
 152 Optional Argument USER-DIR if non-nil use directories off
 153 `user-init-directory'.  This overrides everything except
 154 \"EMACSPACKAGEPATH\".
 155
 156 This function honours the environment variable \"EMACSPACKAGEPATH\"
 157 and returns directories found there as a priority.  If that variable
 158 doesn't exist and USER-DIR is nil, check in the normal places.
 159
 160 If we still can't find a suitable directory, return nil.
 161
 162 Possible values for TYPE are:
 163
 164     std  == For \"standard\" packages that go in '/xemacs-packages/'
 165     mule == For \"mule\" packages that go in '/mule-packages/'
 166     site == For \"unsupported\" packages that go in '/site-packages/'
 167
 168 Note:  Type \"site\" is not yet fully supported."
 169   (let* ((env-value (getenv "EMACSPACKAGEPATH"))
 170          top-dir)
 171     ;; First, check the environment var.
 172     (if env-value
 173         (let ((path-list (paths-decode-directory-path env-value 'drop-empties)))
 174           (cond ((eq type 'std)
 175                  (while path-list
 176                    (if (equal (file-name-nondirectory
 177                                (directory-file-name (car path-list)))
 178                               "xemacs-packages")
 179                        (setq top-dir (car path-list)))
 180                    (setq path-list (cdr path-list))))
 181                 ((eq type 'mule)
 182                  (while path-list
 183                    (if (equal (file-name-nondirectory
 184                                (directory-file-name (car path-list)))
 185                               "mule-packages")
 186                        (setq top-dir (car path-list)))
 187                    (setq path-list (cdr path-list)))))))
 188     ;; Wasn't in the environment, try `user-init-directory' if
 189     ;; USER-DIR is non-nil.
 190     (if (and user-dir
 191              (not top-dir))
 192         (cond ((eq type 'std)
 193                (setq top-dir (file-name-as-directory
 194                               (expand-file-name "xemacs-packages" user-init-directory))))
 195               ((eq type 'mule)
 196                (setq top-dir (file-name-as-directory
 197                               (expand-file-name "mule-packages" user-init-directory))))))
 198     ;; Finally check the normal places
 199     (if (not top-dir)
 200         (let ((path-list (nth 1 (packages-find-packages
 201                                  emacs-roots
 202                                  (packages-compute-package-locations user-init-directory)))))
 203           (cond ((eq type 'std)
 204                  (while path-list
 205                    (if (equal (file-name-nondirectory
 206                                (directory-file-name (car path-list)))
 207                               "xemacs-packages")
 208                        (setq top-dir (car path-list)))
 209                    (setq path-list (cdr path-list))))
 210                 ((eq type 'mule)
 211                  (while path-list
 212                    (if (equal (file-name-nondirectory
 213                                (directory-file-name (car path-list)))
 214                               "mule-packages")
 215                        (setq top-dir (car path-list)))
 216                    (setq path-list (cdr path-list)))))))
 217     ;; Now return either the directory or nil.
 218     top-dir))
 219
 220 (defun package-admin-get-install-dir (package &optional pkg-dir)
 221   "Find a suitable installation directory for a package.
 222
 223 Argument PACKAGE is the package to find a installation directory for.
 224 Optional Argument PKG-DIR, if non-nil is a directory to use for
 225 installation.
 226
 227 If PKG-DIR is non-nil and writable, return that.  Otherwise check to
 228 see if the PACKAGE is already installed and return that location, if
 229 it is writable.  Finally, fall back to the `user-init-directory' if
 230 all else fails.  As a side effect of installing packages under
 231 `user-init-directory' these packages become part of `early-packages'."
 232   ;; If pkg-dir specified, return that if writable.
 233   (if (and pkg-dir
 234            (file-writable-p (directory-file-name pkg-dir)))
 235       pkg-dir
 236     ;; If the user want her packages under ~/.xemacs/, do so.
 237     (let ((type (package-get-info package 'category)))
 238       (if package-get-install-to-user-init-directory
 239           (progn
 240             (cond ((equal type "standard")
 241                    (setq pkg-dir (package-admin-find-top-directory 'std 'user-dir)))
 242                   ((equal type "mule")
 243                    (setq pkg-dir (package-admin-find-top-directory 'mule 'user-dir))))
 244             pkg-dir)
 245         ;; Maybe the package has been installed before, if so, return
 246         ;; that directory.
 247         (let ((package-feature (intern-soft (concat
 248                                              (symbol-name package) "-autoloads")))
 249               autoload-dir)
 250           (when (and (not (eq package 'unknown))
 251                      (featurep package-feature)
 252                      (setq autoload-dir (feature-file package-feature))
 253                      (setq autoload-dir (file-name-directory autoload-dir))
 254                      (member autoload-dir (append early-package-load-path late-package-load-path)))
 255             ;; Find the corresponding entry in late-package
 256             (setq pkg-dir
 257                   (car-safe (member-if (lambda (h)
 258                                          (string-match (concat "^" (regexp-quote h))
 259                                                        autoload-dir))
 260                                        (append (cdr early-packages) late-packages)))))
 261           (if (and pkg-dir
 262                    (file-writable-p (directory-file-name pkg-dir)))
 263               pkg-dir
 264             ;; OK, the package hasn't been previously installed so we need
 265             ;; to guess where it should go.
 266             (cond ((equal type "standard")
 267                    (setq pkg-dir (package-admin-find-top-directory 'std)))
 268                   ((equal type "mule")
 269                    (setq pkg-dir (package-admin-find-top-directory 'mule)))
 270                   (t
 271                    (error 'invalid-operation
 272                           "Invalid package type")))
 273             (if (and pkg-dir
 274                      (file-writable-p (directory-file-name pkg-dir)))
 275                 pkg-dir
 276               ;; Oh no!  Either we still haven't found a suitable
 277               ;; directory, or we can't write to the one we did find.
 278               ;; Drop back to the `user-init-directory'.
 279               (if (y-or-n-p (format "Directory isn't writable, use %s instead? "
 280                                     user-init-directory))
 281                   (progn
 282                     (cond ((equal type "standard")
 283                            (setq pkg-dir (package-admin-find-top-directory 'std 'user-dir)))
 284                           ((equal type "mule")
 285                            (setq pkg-dir (package-admin-find-top-directory 'mule 'user-dir)))
 286                           (t
 287                            (error 'invalid-operation
 288                                   "Invalid package type")))
 289                     ;; Turn on `package-get-install-to-user-init-directory'
 290                     ;; so we don't get asked for each package we try to
 291                     ;; install in this session.
 292                     (setq package-get-install-to-user-init-directory t)
 293                     pkg-dir)
 294                 ;; If we get to here XEmacs can't make up its mind and
 295                 ;; neither can the user, nothing left to do except barf. :-(
 296                 (error 'search-failed
 297                        (format
 298                         "Can't find suitable installation directory for package: %s"
 299                         package))))))))))
 300
 301 (defun package-admin-get-manifest-file (pkg-topdir package)
 302   "Return the name of the MANIFEST file for package PACKAGE.
 303 Note that PACKAGE is a symbol, and not a string."
 304   (let ((dir (file-name-as-directory
 305               (expand-file-name "pkginfo" pkg-topdir))))
 306     (expand-file-name (concat "MANIFEST." (symbol-name package)) dir)))
 307
 308 (defun package-admin-check-manifest (pkg-outbuf pkg-topdir)
 309   "Check for a MANIFEST.<package> file in the package distribution.
 310 If it doesn't exist, create and write one.
 311 PKG-OUTBUF is the buffer that holds the output from `tar', and PKG-TOPDIR
 312 is the top-level directory under which the package was installed."
 313   (let ((manifest-buf " *pkg-manifest*")
 314         (old-case-fold-search case-fold-search)
 315         regexp package-name pathname regexps)
 316     (unwind-protect
 317         (save-excursion                         ;; Probably redundant.
 318           (set-buffer (get-buffer pkg-outbuf))  ;; Probably already the current buffer.
 319           (goto-char (point-min))
 320
 321           ;; Make filenames case-insensitive, if necessary
 322           (if (eq system-type 'windows-nt)
 323               (setq case-fold-search t))
 324
 325           (setq regexp (concat "\\bpkginfo"
 326                                (char-to-string directory-sep-char)
 327                                "MANIFEST\\...*"))
 328
 329           ;; Look for the manifest.
 330           (if (not (re-search-forward regexp nil t))
 331               (progn
 332                 ;; We didn't find a manifest.  Make one.
 333
 334                 ;; Yuk.  We weren't passed the package name, and so we have
 335                 ;; to dig for it.  Look for it as the subdirectory name below
 336                 ;; "lisp", or "man".
 337                 ;; Here, we don't use a single regexp because we want to search
 338                 ;; the directories for a package name in a particular order.
 339                 (if (catch 'done
 340                       (let ((dirs '("lisp" "man"))
 341                             rexp)
 342                         (while dirs
 343                           (setq rexp (concat "\\b" (car dirs)
 344                                              "[\\/]\\([^\\/]+\\)[\//]"))
 345                           (if (re-search-forward rexp nil t)
 346                               (throw 'done t))
 347                           (setq dirs (cdr dirs)))))
 348                     (progn
 349                       (setq package-name (buffer-substring (match-beginning 1)
 350                                                            (match-end 1)))
 351
 352                       ;; Get and erase the manifest buffer
 353                       (setq manifest-buf (get-buffer-create manifest-buf))
 354                       (buffer-disable-undo manifest-buf)
 355                       (erase-buffer manifest-buf)
 356
 357                       ;; Now, scan through the output buffer, looking for
 358                       ;; file and directory names.
 359                       (goto-char (point-min))
 360                       ;; for each line ...
 361                       (while (< (point) (point-max))
 362                         (beginning-of-line)
 363                         (setq pathname nil)
 364
 365                         ;; scan through the regexps, looking for a pathname
 366                         (if (catch 'found-path
 367                               (setq regexps package-admin-tar-filename-regexps)
 368                               (while regexps
 369                                 (if (looking-at (car regexps))
 370                                     (progn
 371                                       (setq pathname
 372                                             (buffer-substring
 373                                              (match-beginning 1)
 374                                              (match-end 1)))
 375                                       (throw 'found-path t)))
 376                                 (setq regexps (cdr regexps))))
 377                             (progn
 378                               ;; found a pathname -- add it to the manifest
 379                               ;; buffer
 380                               (save-excursion
 381                                 (set-buffer manifest-buf)
 382                                 (goto-char (point-max))
 383                                 (insert pathname "\n"))))
 384                         (forward-line 1))
 385
 386                       ;; Processed all lines.
 387                       ;; Now, create the file, pkginfo/MANIFEST.<pkgname>
 388
 389                       ;; We use `expand-file-name' instead of `concat',
 390                       ;; for portability.
 391                       (setq pathname (expand-file-name "pkginfo"
 392                                                        pkg-topdir))
 393                       ;; Create pkginfo, if necessary
 394                       (if (not (file-directory-p pathname))
 395                           (make-directory pathname))
 396                       (setq pathname (expand-file-name
 397                                       (concat "MANIFEST." package-name)
 398                                       pathname))
 399                       (save-excursion
 400                         (set-buffer manifest-buf)
 401                         ;; Put the files in sorted order
 402                         (if (fboundp 'sort-lines)
 403                             (sort-lines nil (point-min) (point-max))
 404                           (warn "`xemacs-base' not installed, MANIFEST.%s not sorted"
 405                                 package-name))
 406                         ;; Write the file.
 407                         ;; Note that using `write-region' *BYPASSES* any check
 408                         ;; to see if XEmacs is currently editing/visiting the
 409                         ;; file.
 410                         (write-region (point-min) (point-max) pathname))
 411                       (kill-buffer manifest-buf))))))
 412       ;; Restore old case-fold-search status
 413       (setq case-fold-search old-case-fold-search))))
 414
 415 ;;;###autoload
 416 (defun package-admin-add-binary-package (file &optional pkg-dir)
 417   "Install a pre-bytecompiled XEmacs package into package hierarchy."
 418   (interactive "fPackage tarball: ")
 419   (let ((buf (get-buffer-create package-admin-temp-buffer))
 420         (status 1)
 421         start err-list)
 422     (setq pkg-dir (package-admin-get-install-dir 'unknown pkg-dir))
 423     ;; Ensure that the current directory doesn't change
 424     (save-excursion
 425       (set-buffer buf)
 426       ;; This is not really needed
 427       (setq default-directory (file-name-as-directory pkg-dir))
 428       (setq case-fold-search t)
 429       (buffer-disable-undo)
 430       (goto-char (setq start (point-max)))
 431       (if (= 0 (setq status (funcall package-admin-install-function
 432                                      file pkg-dir buf)))
 433           (progn
 434             ;; First, check for errors.
 435             ;; We can't necessarily rely upon process error codes.
 436             (catch 'done
 437               (goto-char start)
 438               (setq err-list package-admin-error-messages)
 439               (while err-list
 440                 (if (re-search-forward (car err-list) nil t)
 441                     (progn
 442                       (setq status 1)
 443                       (throw 'done nil)))
 444                 (setq err-list (cdr err-list))))
 445             ;; Make sure that the MANIFEST file exists
 446             (package-admin-check-manifest buf pkg-dir))))
 447     status))
 448
 449 (defun package-admin-rmtree (directory)
 450   "Delete a directory and all of its contents, recursively.
 451 This is a feeble attempt at making a portable rmdir."
 452   (setq directory (file-name-as-directory directory))
 453   (let ((files (directory-files directory nil nil nil t))
 454         (dirs (directory-files directory nil nil nil 'dirs)))
 455     (while dirs
 456       (if (not (member (car dirs) '("." "..")))
 457           (let ((dir (expand-file-name (car dirs) directory)))
 458             (condition-case err
 459                 (if (file-symlink-p dir) ;; just in case, handle symlinks
 460                     (delete-file dir)
 461                   (package-admin-rmtree dir))
 462               (file-error
 463                (message "%s: %s: \"%s\"" (nth 1 err) (nth 2 err) (nth 3 err)))))
 464         (setq dirs (cdr dirs))))
 465     (while files
 466       (condition-case err
 467           (delete-file (expand-file-name (car files) directory))
 468         (file-error
 469          (message "%s: %s: \"%s\"" (nth 1 err) (nth 2 err) (nth 3 err))))
 470       (setq files (cdr files)))
 471     (condition-case err
 472         (delete-directory directory)
 473       (file-error
 474        (message "%s: %s: \"%s\"" (nth 1 err) (nth 2 err) (nth 3 err))))))
 475
 476 (defun package-admin-get-lispdir  (pkg-topdir package)
 477   (let (package-lispdir)
 478     (if (and (setq package-lispdir (expand-file-name "lisp" pkg-topdir))
 479              (setq package-lispdir (expand-file-name (symbol-name package)
 480                                                      package-lispdir))
 481              (file-accessible-directory-p package-lispdir))
 482         package-lispdir)))
 483
 484 (defun package-admin-delete-binary-package (package pkg-topdir)
 485   "Delete a binary installation of PACKAGE below directory PKG-TOPDIR.
 486 PACKAGE is a symbol, not a string."
 487   (let (manifest-file package-lispdir dirs file)
 488     (setq pkg-topdir (package-admin-get-install-dir package pkg-topdir))
 489     (setq manifest-file (package-admin-get-manifest-file pkg-topdir package))
 490     (run-hook-with-args 'package-delete-hook package pkg-topdir)
 491     (if (file-exists-p manifest-file)
 492         (progn
 493           ;; The manifest file exists!  Use it to delete the old distribution.
 494           (message "Removing old files for package \"%s\" ..." package)
 495           (sit-for 0)
 496           (with-temp-buffer
 497             (buffer-disable-undo)
 498             (erase-buffer)
 499             (insert-file-contents manifest-file)
 500             (goto-char (point-min))
 501
 502             ;; For each entry in the MANIFEST ...
 503             (while (< (point) (point-max))
 504               (beginning-of-line)
 505               (setq file (expand-file-name (buffer-substring
 506                                             (point)
 507                                             (point-at-eol))
 508                                            pkg-topdir))
 509               (if (file-directory-p file)
 510                   ;; Keep a record of each directory
 511                   (setq dirs (cons file dirs))
 512                   ;; Delete each file.
 513                   ;; Make sure that the file is writable.
 514                   ;; (This is important under MS Windows.)
 515                   ;; I do not know why it important under MS Windows but
 516                   ;;    1. It bombs out when the file does not exist. This can be condition-cased
 517                   ;;    2. If I removed the write permissions, I do not want XEmacs to just ignore them.
 518                   ;;       If it wants to, XEmacs may ask, but that is about all
 519                   ;; (set-file-modes file 438) ;; 438 -> #o666
 520                   ;; Note, user might have removed the file!
 521                 (condition-case ()
 522                     (delete-file file)
 523                   (error nil)))         ;; We may want to turn the error into a Warning?
 524               (forward-line 1))
 525
 526             ;; Delete empty directories.
 527             (if dirs
 528                 (progn
 529                   (mapc
 530                    (lambda (dir)
 531                      (condition-case ()
 532                          (delete-directory dir)))
 533                    dirs)))
 534           ;; Delete the MANIFEST file
 535           ;; (set-file-modes manifest-file 438) ;; 438 -> #o666
 536           ;; Note. Packages can have MANIFEST in MANIFEST.
 537           (condition-case ()
 538               (delete-file manifest-file)
 539             (error nil)) ;; Do warning?
 540           (message "Removing old files for package \"%s\" ... done" package)))
 541       ;; The manifest file doesn't exist.  Fallback to just deleting the
 542       ;; package-specific lisp directory, if it exists.
 543       ;;
 544       ;; Delete old lisp directory, if any
 545       ;; Gads, this is ugly.  However, we're not supposed to use `concat'
 546       ;; in the name of portability.
 547       (setq package-lispdir (package-admin-get-lispdir pkg-topdir package))
 548       (when package-lispdir
 549         (message "Removing old lisp directory \"%s\" ..." package-lispdir)
 550         (sit-for 0)
 551         (package-admin-rmtree package-lispdir)
 552         (message "Removing old lisp directory \"%s\" ... done" package-lispdir)))
 553     ;; Delete the package from the database of installed packages.
 554     (package-delete-name package)))
 555
 556 (provide 'package-admin)
 557
 558 ;;; package-admin.el ends here