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-;;; guix-ui-generation.el --- Interface for displaying generations -*- lexical-binding: t -*-
-
-;; Copyright © 2014, 2015, 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 profile generations in
-;; 'list' and 'info' buffers, and commands for working with them.
-
-;;; Code:
-
-(require 'cl-lib)
-(require 'guix-buffer)
-(require 'guix-list)
-(require 'guix-info)
-(require 'guix-ui)
-(require 'guix-ui-package)
-(require 'guix-base)
-(require 'guix-backend)
-(require 'guix-guile)
-(require 'guix-entry)
-(require 'guix-utils)
-(require 'guix-profiles)
-
-(guix-ui-define-entry-type generation)
-
-(defun guix-generation-get-display (profile search-type &rest search-values)
- "Search for generations and show results.
-
-If PROFILE is nil, use `guix-current-profile'.
-
-See `guix-ui-get-entries' for the meaning of SEARCH-TYPE and
-SEARCH-VALUES."
- (apply #'guix-list-get-display-entries
- 'generation
- (or profile guix-current-profile)
- search-type search-values))
-
-(defun guix-delete-generations (profile generations
- &optional operation-buffer)
- "Delete GENERATIONS from PROFILE.
-Each element from GENERATIONS is a generation number."
- (when (or (not guix-operation-confirm)
- (y-or-n-p
- (let ((count (length generations)))
- (if (> count 1)
- (format "Delete %d generations from profile '%s'? "
- count profile)
- (format "Delete generation %d from profile '%s'? "
- (car generations) profile)))))
- (guix-eval-in-repl
- (guix-make-guile-expression
- 'delete-generations* profile generations)
- operation-buffer)))
-
-(defun guix-switch-to-generation (profile generation
- &optional operation-buffer)
- "Switch PROFILE to GENERATION."
- (when (or (not guix-operation-confirm)
- (y-or-n-p (format "Switch profile '%s' to generation %d? "
- profile generation)))
- (guix-eval-in-repl
- (guix-make-guile-expression
- 'switch-to-generation* profile generation)
- operation-buffer)))
-
-(defun guix-system-generation? ()
- "Return non-nil, if current generation is a system one."
- (eq (guix-buffer-current-entry-type)
- 'system-generation))
-
-(defun guix-generation-current-packages-profile (&optional generation)
- "Return a directory where packages are installed for the
-current profile's GENERATION."
- (guix-packages-profile (guix-ui-current-profile)
- generation
- (guix-system-generation?)))
-
-
-;;; Generation 'info'
-
-(guix-ui-info-define-interface generation
- :buffer-name "*Guix Generation Info*"
- :format '((number format guix-generation-info-insert-number)
- (prev-number format (format))
- (current format guix-generation-info-insert-current)
- (path simple (indent guix-file))
- (time format (time)))
- :titles '((path . "File name")
- (prev-number . "Previous number")))
-
-(defface guix-generation-info-number
- '((t :inherit font-lock-keyword-face))
- "Face used for a number of a generation."
- :group 'guix-generation-info-faces)
-
-(defface guix-generation-info-current
- '((t :inherit guix-package-info-installed-outputs))
- "Face used if a generation is the current one."
- :group 'guix-generation-info-faces)
-
-(defface guix-generation-info-not-current
- '((t nil))
- "Face used if a generation is not the current one."
- :group 'guix-generation-info-faces)
-
-(defun guix-generation-info-insert-number (number &optional _)
- "Insert generation NUMBER and action buttons."
- (guix-info-insert-value-format number 'guix-generation-info-number)
- (guix-info-insert-indent)
- (guix-info-insert-action-button
- "Packages"
- (lambda (btn)
- (guix-buffer-get-display-entries
- 'list guix-package-list-type
- (list (guix-generation-current-packages-profile
- (button-get btn 'number))
- 'installed)
- 'add))
- "Show installed packages for this generation"
- 'number number)
- (guix-info-insert-indent)
- (guix-info-insert-action-button
- "Delete"
- (lambda (btn)
- (guix-delete-generations (guix-ui-current-profile)
- (list (button-get btn 'number))
- (current-buffer)))
- "Delete this generation"
- 'number number))
-
-(defun guix-generation-info-insert-current (val entry)
- "Insert boolean value VAL showing whether this generation is current."
- (if val
- (guix-info-insert-value-format "Yes" 'guix-generation-info-current)
- (guix-info-insert-value-format "No" 'guix-generation-info-not-current)
- (guix-info-insert-indent)
- (guix-info-insert-action-button
- "Switch"
- (lambda (btn)
- (guix-switch-to-generation (guix-ui-current-profile)
- (button-get btn 'number)
- (current-buffer)))
- "Switch to this generation (make it the current one)"
- 'number (guix-entry-value entry 'number))))
-
-
-;;; Generation 'list'
-
-(guix-ui-list-define-interface 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)
- (time guix-list-get-time 20 t)
- (path guix-list-get-file-name 30 t))
- :titles '((number . "N."))
- :sort-key '(number . t)
- :marks '((delete . ?D)))
-
-(let ((map guix-generation-list-mode-map))
- (define-key map (kbd "RET") 'guix-generation-list-show-packages)
- (define-key map (kbd "+") 'guix-generation-list-show-added-packages)
- (define-key map (kbd "-") 'guix-generation-list-show-removed-packages)
- (define-key map (kbd "=") 'guix-generation-list-diff)
- (define-key map (kbd "D") 'guix-generation-list-diff)
- (define-key map (kbd "e") 'guix-generation-list-ediff)
- (define-key map (kbd "x") 'guix-generation-list-execute)
- (define-key map (kbd "s") 'guix-generation-list-switch)
- (define-key map (kbd "c") 'guix-generation-list-switch)
- (define-key map (kbd "d") 'guix-generation-list-mark-delete))
-
-(defun guix-generation-list-get-current (val &optional _)
- "Return string from VAL showing whether this generation is current.
-VAL is a boolean value."
- (if val "(current)" ""))
-
-(defun guix-generation-list-switch ()
- "Switch current profile to the generation at point."
- (interactive)
- (let* ((entry (guix-list-current-entry))
- (current (guix-entry-value entry 'current))
- (number (guix-entry-value entry 'number)))
- (if current
- (user-error "This generation is already the current one")
- (guix-switch-to-generation (guix-ui-current-profile)
- number (current-buffer)))))
-
-(defun guix-generation-list-show-packages ()
- "List installed packages for the generation at point."
- (interactive)
- (guix-package-get-display
- (guix-generation-current-packages-profile (guix-list-current-id))
- 'installed))
-
-(defun guix-generation-list-generations-to-compare ()
- "Return a sorted list of 2 marked generations for comparing."
- (let ((numbers (guix-list-get-marked-id-list 'general)))
- (if (/= (length numbers) 2)
- (user-error "2 generations should be marked for comparing")
- (sort numbers #'<))))
-
-(defun guix-generation-list-profiles-to-compare ()
- "Return a sorted list of 2 marked generation profiles for comparing."
- (mapcar #'guix-generation-current-packages-profile
- (guix-generation-list-generations-to-compare)))
-
-(defun guix-generation-list-show-added-packages ()
- "List package outputs added to the latest marked generation.
-If 2 generations are marked with \\[guix-list-mark], display
-outputs installed in the latest marked generation that were not
-installed in the other one."
- (interactive)
- (guix-buffer-get-display-entries
- 'list 'output
- (cl-list* (guix-ui-current-profile)
- 'profile-diff
- (reverse (guix-generation-list-profiles-to-compare)))
- 'add))
-
-(defun guix-generation-list-show-removed-packages ()
- "List package outputs removed from the latest marked generation.
-If 2 generations are marked with \\[guix-list-mark], display
-outputs not installed in the latest marked generation that were
-installed in the other one."
- (interactive)
- (guix-buffer-get-display-entries
- 'list 'output
- (cl-list* (guix-ui-current-profile)
- 'profile-diff
- (guix-generation-list-profiles-to-compare))
- 'add))
-
-(defun guix-generation-list-compare (diff-fun gen-fun)
- "Run GEN-FUN on the 2 marked generations and run DIFF-FUN on the results."
- (cl-multiple-value-bind (gen1 gen2)
- (guix-generation-list-generations-to-compare)
- (funcall diff-fun
- (funcall gen-fun gen1)
- (funcall gen-fun gen2))))
-
-(defun guix-generation-list-ediff-manifests ()
- "Run Ediff on manifests of the 2 marked generations."
- (interactive)
- (guix-generation-list-compare
- #'ediff-files
- #'guix-profile-generation-manifest-file))
-
-(defun guix-generation-list-diff-manifests ()
- "Run Diff on manifests of the 2 marked generations."
- (interactive)
- (guix-generation-list-compare
- #'guix-diff
- #'guix-profile-generation-manifest-file))
-
-(defun guix-generation-list-ediff-packages ()
- "Run Ediff on package outputs installed in the 2 marked generations."
- (interactive)
- (guix-generation-list-compare
- #'ediff-buffers
- #'guix-profile-generation-packages-buffer))
-
-(defun guix-generation-list-diff-packages ()
- "Run Diff on package outputs installed in the 2 marked generations."
- (interactive)
- (guix-generation-list-compare
- #'guix-diff
- #'guix-profile-generation-packages-buffer))
-
-(defun guix-generation-list-ediff (arg)
- "Run Ediff on package outputs installed in the 2 marked generations.
-With ARG, run Ediff on manifests of the marked generations."
- (interactive "P")
- (if arg
- (guix-generation-list-ediff-manifests)
- (guix-generation-list-ediff-packages)))
-
-(defun guix-generation-list-diff (arg)
- "Run Diff on package outputs installed in the 2 marked generations.
-With ARG, run Diff on manifests of the marked generations."
- (interactive "P")
- (if arg
- (guix-generation-list-diff-manifests)
- (guix-generation-list-diff-packages)))
-
-(defun guix-generation-list-mark-delete (&optional arg)
- "Mark the current generation for deletion and move to the next line.
-With ARG, mark all generations for deletion."
- (interactive "P")
- (if arg
- (guix-list-mark-all 'delete)
- (guix-list--mark 'delete t)))
-
-(defun guix-generation-list-execute ()
- "Delete marked generations."
- (interactive)
- (let ((marked (guix-list-get-marked-id-list 'delete)))
- (or marked
- (user-error "No generations marked for deletion"))
- (guix-delete-generations (guix-ui-current-profile)
- marked (current-buffer))))
-
-
-;;; Inserting packages to compare generations
-
-(defcustom guix-generation-packages-buffer-name-function
- #'guix-generation-packages-buffer-name-default
- "Function used to define name of a buffer with generation packages.
-This function is called with 2 arguments: PROFILE (string) and
-GENERATION (number)."
- :type '(choice (function-item guix-generation-packages-buffer-name-default)
- (function-item guix-generation-packages-buffer-name-long)
- (function :tag "Other function"))
- :group 'guix-generation)
-
-(defcustom guix-generation-packages-update-buffer t
- "If non-nil, always update list of packages during comparing generations.
-If nil, generation packages are received only once. So when you
-compare generation 1 and generation 2, the packages for both
-generations will be received. Then if you compare generation 1
-and generation 3, only the packages for generation 3 will be
-received. Thus if you use comparing of different generations a
-lot, you may set this variable to nil to improve the
-performance."
- :type 'boolean
- :group 'guix-generation)
-
-(defvar guix-generation-output-name-width 30
- "Width of an output name \"column\".
-This variable is used in auxiliary buffers for comparing generations.")
-
-(defun guix-generation-packages (profile)
- "Return a list of sorted packages installed in PROFILE.
-Each element of the list is a list of the package specification
-and its store path."
- (let ((names+paths (guix-eval-read
- (guix-make-guile-expression
- 'profile->specifications+paths profile))))
- (sort names+paths
- (lambda (a b)
- (string< (car a) (car b))))))
-
-(defun guix-generation-packages-buffer-name-default (profile generation)
- "Return name of a buffer for displaying GENERATION's package outputs.
-Use base name of PROFILE file name."
- (let ((profile-name (file-name-base (directory-file-name profile))))
- (format "*Guix %s: generation %s*"
- profile-name generation)))
-
-(defun guix-generation-packages-buffer-name-long (profile generation)
- "Return name of a buffer for displaying GENERATION's package outputs.
-Use the full PROFILE file name."
- (format "*Guix generation %s (%s)*"
- generation profile))
-
-(defun guix-generation-packages-buffer-name (profile generation)
- "Return name of a buffer for displaying GENERATION's package outputs."
- (funcall guix-generation-packages-buffer-name-function
- profile generation))
-
-(defun guix-generation-insert-package (name path)
- "Insert package output NAME and store PATH at point."
- (insert name)
- (indent-to guix-generation-output-name-width 2)
- (insert path "\n"))
-
-(defun guix-generation-insert-packages (buffer profile)
- "Insert package outputs installed in PROFILE in BUFFER."
- (with-current-buffer buffer
- (setq buffer-read-only nil
- indent-tabs-mode nil)
- (erase-buffer)
- (mapc (lambda (name+path)
- (guix-generation-insert-package
- (car name+path) (cadr name+path)))
- (guix-generation-packages profile))))
-
-(defun guix-generation-packages-buffer (profile generation &optional system?)
- "Return buffer with package outputs installed in PROFILE's GENERATION.
-Create the buffer if needed."
- (let ((buf-name (guix-generation-packages-buffer-name
- profile generation)))
- (or (and (null guix-generation-packages-update-buffer)
- (get-buffer buf-name))
- (let ((buf (get-buffer-create buf-name)))
- (guix-generation-insert-packages
- buf
- (guix-packages-profile profile generation system?))
- buf))))
-
-(defun guix-profile-generation-manifest-file (generation)
- "Return the file name of a GENERATION's manifest.
-GENERATION is a generation number of the current profile."
- (guix-manifest-file (guix-ui-current-profile)
- generation
- (guix-system-generation?)))
-
-(defun guix-profile-generation-packages-buffer (generation)
- "Insert GENERATION's package outputs in a buffer and return it.
-GENERATION is a generation number of the current profile."
- (guix-generation-packages-buffer (guix-ui-current-profile)
- generation
- (guix-system-generation?)))
-
-
-;;; Interactive commands
-
-;;;###autoload
-(defun guix-generations (&optional profile)
- "Display information about all generations.
-If PROFILE is nil, use `guix-current-profile'.
-Interactively with prefix, prompt for PROFILE."
- (interactive (list (guix-ui-read-profile)))
- (guix-generation-get-display profile 'all))
-
-;;;###autoload
-(defun guix-last-generations (number &optional profile)
- "Display information about last NUMBER generations.
-If PROFILE is nil, use `guix-current-profile'.
-Interactively with prefix, prompt for PROFILE."
- (interactive
- (list (read-number "The number of last generations: ")
- (guix-ui-read-profile)))
- (guix-generation-get-display profile 'last number))
-
-;;;###autoload
-(defun guix-generations-by-time (from to &optional profile)
- "Display information about generations created between FROM and TO.
-FROM and TO should be time values.
-If PROFILE is nil, use `guix-current-profile'.
-Interactively with prefix, prompt for PROFILE."
- (interactive
- (list (guix-read-date "Find generations (from): ")
- (guix-read-date "Find generations (to): ")
- (guix-ui-read-profile)))
- (guix-generation-get-display profile 'time
- (float-time from)
- (float-time to)))
-
-(provide 'guix-ui-generation)
-
-;;; guix-ui-generation.el ends here