From: Philip Kaludercic <philipk@posteo.net>
To: Stefan Kangas <stefankangas@gmail.com>
Cc: Thierry Volpiatto <thievol@posteo.net>, emacs-devel@gnu.org
Subject: Re: Proposal for 'package-isolate' command
Date: Wed, 16 Aug 2023 19:00:51 +0000 [thread overview]
Message-ID: <877cpuizh8.fsf@posteo.net> (raw)
In-Reply-To: <CADwFkmmArwnbAZVh_OtxH2KbmWfEupRv4F2JBacepj2kUDU+1w@mail.gmail.com> (Stefan Kangas's message of "Wed, 16 Aug 2023 20:49:19 +0200")
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Stefan Kangas <stefankangas@gmail.com> writes:
> Philip Kaludercic <philipk@posteo.net> writes:
>
>> I guess this is too controversial. Perhaps just adjusting
>> `frame-title-format' would be enough.
>
> Would it be controversial to print a message in the scratch buffer?
That is also a good idea, this patch integrates that approach:
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From ecc6b37a2a1cb9b3629521fc92b2d9af5c5ea653 Mon Sep 17 00:00:00 2001
From: Philip Kaludercic <philipk@posteo.net>
Date: Tue, 15 Aug 2023 18:39:14 +0200
Subject: [PATCH] Add command to start Emacs with specific packages
* lisp/emacs-lisp/package.el (package--dependencies): Extend function
to handle and return package descriptors.
(package-isolate): Add new command.
* etc/NEWS: Announce new command.
---
etc/NEWS | 9 +++++
lisp/emacs-lisp/package.el | 70 ++++++++++++++++++++++++++++++++++----
2 files changed, 73 insertions(+), 6 deletions(-)
diff --git a/etc/NEWS b/etc/NEWS
index 57f04609679..dc213dcee42 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -505,6 +505,15 @@ project, that you can quickly select using 'project-switch-project'
When non-nil, package specifications with side-effects for building
software will be used when building a package.
+---
+*** New command to start an inferior Emacs loading only specific packages.
+The new command 'package-isolate' will start a new Emacs process, as
+a sub-process of Emacs where you invoke the command, in a way that
+causes the new process to load only some of the installed packages.
+The command prompts for the packages to activate in this
+sub-process, and is intended for testing Emacs and/or the packages
+in a clean environment.
+
** Flymake
+++
diff --git a/lisp/emacs-lisp/package.el b/lisp/emacs-lisp/package.el
index b3062d2608b..76cd39cc263 100644
--- a/lisp/emacs-lisp/package.el
+++ b/lisp/emacs-lisp/package.el
@@ -2330,12 +2330,26 @@ package-upgrade-all
(mapc #'package-upgrade upgradeable))))
(defun package--dependencies (pkg)
- "Return a list of all dependencies PKG has.
-This is done recursively."
- ;; Can we have circular dependencies? Assume "nope".
- (when-let* ((desc (cadr (assq pkg package-archive-contents)))
- (deps (mapcar #'car (package-desc-reqs desc))))
- (delete-dups (apply #'nconc deps (mapcar #'package--dependencies deps)))))
+ "Return a list of all recursive dependencies of PKG.
+If PKG is a package descriptor, the return value will consist of
+a list of package descriptors. If PKG is a symbol, designating a
+package, the return value will be a list of symbols designating
+packages."
+ (when-let* ((desc (if (package-desc-p pkg) pkg
+ (cadr (assq pkg package-archive-contents)))))
+ ;; Can we have circular dependencies? Assume "nope".
+ (let ((all (named-let more ((pkg-desc desc))
+ (let (deps)
+ (dolist (req (package-desc-reqs pkg-desc))
+ (setq deps (nconc
+ (catch 'found
+ (dolist (p (apply #'append (mapcar #'cdr (package--alist))))
+ (when (and (string= (car req) (package-desc-name p))
+ (version-list-<= (cadr req) (package-desc-version p)))
+ (throw 'found (more p)))))
+ deps)))
+ (delete-dups (cons pkg-desc deps))))))
+ (remq pkg (mapcar (if (package-desc-p pkg) #'identity #'package-desc-name) all)))))
(defun package-strip-rcs-id (str)
"Strip RCS version ID from the version string STR.
@@ -2625,6 +2639,50 @@ package-autoremove
removable))
(message "Nothing to autoremove")))))
+(defun package-isolate (packages)
+ "Start an uncustomised Emacs and only load a set of PACKAGES."
+ (interactive
+ (cl-loop for p in (cl-loop for p in (package--alist) append (cdr p))
+ unless (package-built-in-p p)
+ collect (cons (package-desc-full-name p) p) into table
+ finally return
+ (list (cl-loop for c in (completing-read-multiple
+ "Isolate packages: " table
+ nil t)
+ collect (alist-get c table nil nil #'string=)))))
+ (let* ((name (concat "package-isolate-"
+ (mapconcat #'package-desc-full-name packages ",")))
+ initial-scratch-message package-load-list)
+ (with-temp-buffer
+ (insert ";; Emacs has been started by `package-isolate' without any configuration, and\n"
+ ";; only the following packages have been loaded:\n;;\n")
+
+ (dolist (package (append packages (mapcan #'package--dependencies packages)))
+ (push (list (package-desc-name package)
+ (package-version-join (package-desc-version package)))
+ package-load-list)
+ (insert ";; - " (package-desc-full-name package))
+ (unless (memq package packages)
+ (insert " (dependency)"))
+ (insert "\n"))
+ (insert "\n")
+ (setq initial-scratch-message (buffer-string)))
+ (apply #'start-process (concat "*" name "*") nil
+ (list (expand-file-name invocation-name invocation-directory)
+ "--quick" "--debug-init"
+ "--init-directory" (make-temp-file name t)
+ (format "--eval=%S"
+ `(progn
+ (setq initial-scratch-message ,initial-scratch-message)
+
+ (require 'package)
+ ,@(mapcar
+ (lambda (dir)
+ `(add-to-list 'package-directory-list ,dir))
+ (cons package-user-dir package-directory-list))
+ (setq package-load-list ',package-load-list)
+ (package-initialize)))))))
+
\f
;;;; Package description buffer.
--
2.39.2
next prev parent reply other threads:[~2023-08-16 19:00 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-07 7:57 Changes to make in elpa-packages file for nongnu elpa Thierry Volpiatto
2023-08-07 13:30 ` Philip Kaludercic
2023-08-07 18:19 ` Thierry Volpiatto
2023-08-07 20:33 ` Philip Kaludercic
2023-08-08 4:33 ` Thierry Volpiatto
2023-08-08 5:52 ` Philip Kaludercic
2023-08-08 6:17 ` Thierry Volpiatto
2023-08-15 16:55 ` Philip Kaludercic
2023-08-15 17:34 ` Eshel Yaron
2023-08-15 19:39 ` Proposal for 'package-isolate' command Philip Kaludercic
2023-08-17 10:53 ` Adam Porter
2023-08-15 18:56 ` Changes to make in elpa-packages file for nongnu elpa Eli Zaretskii
2023-08-15 19:52 ` Proposal for 'package-isolate' command Philip Kaludercic
2023-08-16 11:25 ` Eli Zaretskii
2023-08-16 18:48 ` Philip Kaludercic
2023-08-16 6:51 ` Changes to make in elpa-packages file for nongnu elpa Thierry Volpiatto
2023-08-16 10:10 ` Philip Kaludercic
2023-08-16 10:14 ` Thierry Volpiatto
2023-08-16 11:03 ` Philip Kaludercic
2023-08-16 11:55 ` Thierry Volpiatto
2023-08-16 18:34 ` Proposal for 'package-isolate' command Philip Kaludercic
2023-08-16 18:49 ` Stefan Kangas
2023-08-16 19:00 ` Philip Kaludercic [this message]
2023-08-17 5:30 ` Thierry Volpiatto
2023-08-17 8:34 ` Philip Kaludercic
2023-08-17 9:07 ` Eshel Yaron
2023-08-17 14:19 ` Philip Kaludercic
2023-08-17 13:32 ` Thierry Volpiatto
2023-08-17 14:04 ` Philip Kaludercic
2023-08-17 14:15 ` Thierry Volpiatto
2023-08-17 13:56 ` Thierry Volpiatto
2023-08-17 14:18 ` Philip Kaludercic
2023-08-17 14:28 ` Thierry Volpiatto
2023-08-17 18:17 ` Philip Kaludercic
2023-08-18 4:57 ` Thierry Volpiatto
2023-08-18 5:44 ` Eli Zaretskii
2023-08-18 7:49 ` Philip Kaludercic
2023-08-18 12:43 ` Thierry Volpiatto
2023-08-18 18:34 ` Adding package and package-vc to ELPA Philip Kaludercic
2023-08-19 10:26 ` Thierry Volpiatto
2023-08-20 6:40 ` Proposal for 'package-isolate' command Thierry Volpiatto
2023-08-20 7:51 ` Philip Kaludercic
2023-08-20 16:06 ` Thierry Volpiatto
2023-08-20 18:41 ` Philip Kaludercic
2023-08-20 19:15 ` Thierry Volpiatto
2023-08-20 20:24 ` Thierry Volpiatto
2023-08-20 20:28 ` Philip Kaludercic
2023-08-16 14:10 ` Changes to make in elpa-packages file for nongnu elpa Eli Zaretskii
2023-08-16 18:52 ` Philip Kaludercic
2023-08-08 6:01 ` Thierry Volpiatto
2023-08-08 6:34 ` Michael Albinus
2023-08-08 16:37 ` Philip Kaludercic
2023-08-08 16:41 ` Michael Albinus
2023-08-09 7:06 ` Philip Kaludercic
2023-08-09 11:53 ` Eli Zaretskii
2023-08-09 14:53 ` Philip Kaludercic
2023-08-09 14:55 ` Eli Zaretskii
2023-08-09 15:24 ` Philip Kaludercic
2023-08-09 16:23 ` Eli Zaretskii
2023-08-09 3:47 ` Richard Stallman
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