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diff --git a/emacs/guix-ui-generation.el b/emacs/guix-ui-generation.el new file mode 100644 index 0000000000..aa71645b4e --- /dev/null +++ b/emacs/guix-ui-generation.el @@ -0,0 +1,433 @@ +;;; guix-ui-generation.el --- Interface for displaying generations -*- lexical-binding: t -*- + +;; Copyright © 2014, 2015 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) + +(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))) + + +;;; 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-ui-current-profile) + 'generation (button-get btn 'number)) + '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-path 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-ui-current-profile) + 'generation (guix-list-current-id))) + +(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-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) + 'generation-diff + (reverse (guix-generation-list-generations-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) + 'generation-diff + (guix-generation-list-generations-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 generation) + "Return a list of sorted packages installed in PROFILE's GENERATION. +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 + 'generation-package-specifications+paths + profile generation)))) + (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 generation) + "Insert package outputs installed in PROFILE's GENERATION 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 generation)))) + +(defun guix-generation-packages-buffer (profile generation) + "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 profile generation) + 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)) + +(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)) + + +;;; 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 |