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emacs: Add interface for system generations.

* emacs/guix-main.scm (system-generation-boot-parameters)
(system-generation-param-alist, system-generation-sexps): New procedures.
(entries): Add 'system-generation' entry type.
* emacs/guix-messages.el (guix-result-message): Use the same messages
  for 'generation' and 'system-generation' entry types.
* emacs/guix-ui-system-generation.el: New file.
* emacs.am (ELFILES): Add it.
* doc/emacs.texi (Emacs Commands): Document new commands.
* NEWS: Mention new interface.
gn-latest-20200428
Alex Kost 6 years ago
parent
commit
67cedc4ba6
  1. 1
      NEWS
  2. 8
      doc/emacs.texi
  3. 1
      emacs.am
  4. 38
      emacs/guix-main.scm
  5. 5
      emacs/guix-messages.el
  6. 105
      emacs/guix-ui-system-generation.el

1
NEWS

@ -14,6 +14,7 @@ Please send Guix bug reports to bug-guix@gnu.org.
** Package management
*** Emacs interface for system generations
*** Emacs interface for hydra.gnu.org
*** Changes in Emacs interface variables
In the following names, BUFFER-TYPE means "info" or "list";

8
doc/emacs.texi

@ -191,6 +191,14 @@ date/time prompt,,, org, The Org Manual}).
@end table
Analogously on GuixSD you can also display system generations:
@table @kbd
@item M-x guix-system-generations
@item M-x guix-last-system-generations
@item M-x guix-system-generations-by-time
@end table
You can also invoke the @command{guix pull} command (@pxref{Invoking
guix pull}) from Emacs using:

1
emacs.am

@ -47,6 +47,7 @@ ELFILES = \
emacs/guix-ui.el \
emacs/guix-ui-package.el \
emacs/guix-ui-generation.el \
emacs/guix-ui-system-generation.el \
emacs/guix-utils.el
if HAVE_EMACS

38
emacs/guix-main.scm

@ -61,7 +61,8 @@
(guix scripts lint)
(guix scripts package)
(guix scripts pull)
(gnu packages))
(gnu packages)
(gnu system))
(define-syntax-rule (first-or-false lst)
(and (not (null? lst))
@ -758,6 +759,38 @@ See 'entry-sexps' for details."
params)))
(map ->sexp generations)))
(define system-generation-boot-parameters
(memoize
(lambda (profile generation)
"Return boot parameters for PROFILE's system GENERATION."
(let* ((gen-file (generation-file-name profile generation))
(param-file (string-append gen-file "/parameters")))
(call-with-input-file param-file read-boot-parameters)))))
(define (system-generation-param-alist profile)
"Return an alist of system generation parameters and procedures for
PROFILE."
(append (generation-param-alist profile)
`((label . ,(lambda (gen)
(boot-parameters-label
(system-generation-boot-parameters
profile gen))))
(root-device . ,(lambda (gen)
(boot-parameters-root-device
(system-generation-boot-parameters
profile gen))))
(kernel . ,(lambda (gen)
(boot-parameters-kernel
(system-generation-boot-parameters
profile gen)))))))
(define (system-generation-sexps profile params search-type search-vals)
"Return an alist with information about system generations."
(let ((generations (find-generations profile search-type search-vals))
(->sexp (object-transformer (system-generation-param-alist profile)
params)))
(map ->sexp generations)))
;;; Getting package/output/generation entries (alists).
@ -802,6 +835,9 @@ parameter/value pairs."
((generation)
(generation-sexps profile params
search-type search-vals))
((system-generation)
(system-generation-sexps profile params
search-type search-vals))
(else (entry-type-error entry-type))))

5
emacs/guix-messages.el

@ -186,7 +186,10 @@ Try \"M-x guix-search-by-name\"."
search-type search-vals)
"Display an appropriate message after displaying ENTRIES."
(let* ((type-spec (guix-assq-value guix-messages
entry-type search-type))
(if (eq entry-type 'system-generation)
'generation
entry-type)
search-type))
(fun-or-count-spec (car type-spec)))
(if (functionp fun-or-count-spec)
(funcall fun-or-count-spec profile entries search-vals)

105
emacs/guix-ui-system-generation.el

@ -0,0 +1,105 @@
;;; guix-ui-system-generation.el --- Interface for displaying system generations -*- lexical-binding: t -*-
;; Copyright © 2016 Alex Kost <alezost@gmail.com>
;; This file is part of GNU Guix.
;; GNU Guix 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.
;; GNU Guix 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:
;; This file provides an interface for displaying system generations
;; in 'list' and 'info' buffers, and commands for working with them.
;;; Code:
(require 'cl-lib)
(require 'guix-list)
(require 'guix-ui)
(require 'guix-ui-generation)
(require 'guix-profiles)
(guix-ui-define-entry-type system-generation)
(defun guix-system-generation-get-display (search-type &rest search-values)
"Search for system generations and show results.
See `guix-ui-get-entries' for the meaning of SEARCH-TYPE and
SEARCH-VALUES."
(apply #'guix-list-get-display-entries
'system-generation
guix-system-profile
search-type search-values))
;;; System generation 'info'
(guix-ui-info-define-interface system-generation
:buffer-name "*Guix Generation Info*"
:format '((number format guix-generation-info-insert-number)
(label format (format))
(prev-number format (format))
(current format guix-generation-info-insert-current)
(path format (format guix-file))
(time format (time))
(root-device format (format))
(kernel format (format guix-file)))
:titles guix-generation-info-titles)
;;; System generation 'list'
;; FIXME It is better to make `guix-generation-list-shared-map' with
;; common keys for both usual and system generations.
(defvar guix-system-generation-list-mode-map
(copy-keymap guix-generation-list-mode-map)
"Keymap for `guix-system-generation-list-mode' buffers.")
(guix-ui-list-define-interface system-generation
:buffer-name "*Guix Generation List*"
:format '((number nil 5 guix-list-sort-numerically-0 :right-align t)
(current guix-generation-list-get-current 10 t)
(label nil 40 t)
(time guix-list-get-time 20 t)
(path guix-list-get-file-path 30 t))
:titles guix-generation-list-titles
:sort-key '(number . t)
:marks '((delete . ?D)))
;;; Interactive commands
;;;###autoload
(defun guix-system-generations ()
"Display information about system generations."
(interactive)
(guix-system-generation-get-display 'all))
;;;###autoload
(defun guix-last-system-generations (number)
"Display information about last NUMBER of system generations."
(interactive "nThe number of last generations: ")
(guix-system-generation-get-display 'last number))
;;;###autoload
(defun guix-system-generations-by-time (from to)
"Display information about system generations created between FROM and TO."
(interactive
(list (guix-read-date "Find generations (from): ")
(guix-read-date "Find generations (to): ")))
(guix-system-generation-get-display
'time (float-time from) (float-time to)))
(provide 'guix-ui-system-generation)
;;; guix-ui-system-generation.el ends here
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