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emacs: Do not allow a user to modify system profiles.

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Fixes <http://bugs.gnu.org/22607>.
Reported by myglc2 <myglc2@gmail.com>.

Remove possibilities to install/delete packages to/from a system profile
both for "Package List" and "Package Info" buffers.

* emacs/guix-profiles.el (guix-system-profile-regexp): New variable.
(guix-system-profile?): New procedure.
* emacs/guix-ui-package.el (guix-package-info-insert-output): Do not
display "Install"/"Delete" button for a system profile.
(guix-package-assert-non-system-profile): New procedure.
(guix-package-execute-actions): Use it.
This commit is contained in:
Alex Kost 2016-02-12 12:32:34 +03:00
parent 0338132e65
commit 260795b736
2 changed files with 30 additions and 5 deletions
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8
emacs/guix-profiles.el
View file

@ -40,6 +40,14 @@
(defvar guix-current-profile guix-default-profile
"Current profile.")
(defvar guix-system-profile-regexp
(concat "\\`" (regexp-quote guix-system-profile))
"Regexp matching system profiles.")
(defun guix-system-profile? (profile)
"Return non-nil, if PROFILE is a system one."
(string-match-p guix-system-profile-regexp profile))
(defun guix-profile-prompt (&optional default)
"Prompt for profile and return it.
Use DEFAULT as a start directory. If it is nil, use

21
emacs/guix-ui-package.el
View file

@ -454,17 +454,22 @@ current OUTPUT is installed (if there is such output in
(string= (guix-entry-value entry 'output)
output))
installed))
(action-type (if installed-entry 'delete 'install)))
(action-type (if installed-entry 'delete 'install))
(profile (guix-ui-current-profile)))
(guix-info-insert-indent)
(guix-format-insert output
(if installed-entry
'guix-package-info-installed-outputs
'guix-package-info-uninstalled-outputs)
guix-package-info-output-format)
;; Do not allow a user to install/delete anything to/from a system
;; profile, so add action buttons only for non-system profiles.
(when (and profile
(not (guix-system-profile? profile)))
(guix-package-info-insert-action-button action-type entry output)
(when obsolete
(guix-info-insert-indent)
(guix-package-info-insert-action-button 'upgrade entry output))
(guix-package-info-insert-action-button 'upgrade entry output)))
(insert "\n")
(when installed-entry
(guix-info-insert-entry installed-entry 'installed-output 2))))
@ -723,10 +728,22 @@ take an entry as argument."
'upgrade nil
(guix-package-installed-outputs entry)))))
(defun guix-package-assert-non-system-profile ()
"Verify that the current profile is not a system one.
The current profile is the one used by the current buffer."
(let ((profile (guix-ui-current-profile)))
(and profile
(guix-system-profile? profile)
(user-error "Packages cannot be installed or removed to/from \
profile '%s'.
Use 'guix system reconfigure' shell command to modify a system profile."
profile))))
(defun guix-package-execute-actions (fun)
"Perform actions on the marked packages.
Use FUN to define actions suitable for `guix-process-package-actions'.
FUN should take action-type as argument."
(guix-package-assert-non-system-profile)
(let ((actions (delq nil
(mapcar fun '(install delete upgrade)))))
(if actions