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-rw-r--r--emacs/guix-base.el27
-rw-r--r--emacs/guix-list.el42
-rw-r--r--emacs/guix-main.scm3
-rw-r--r--emacs/guix-pcomplete.el392
-rw-r--r--emacs/guix-utils.el33
5 files changed, 476 insertions, 21 deletions
diff --git a/emacs/guix-base.el b/emacs/guix-base.el
index 5129c87a5d..851ee895b9 100644
--- a/emacs/guix-base.el
+++ b/emacs/guix-base.el
@@ -439,6 +439,7 @@ following keywords are available:
(define-key map (kbd "r") 'guix-history-forward)
(define-key map (kbd "g") 'revert-buffer)
(define-key map (kbd "R") 'guix-redisplay-buffer)
+ (define-key map (kbd "M") 'guix-apply-manifest)
(define-key map (kbd "C-c C-z") 'guix-switch-to-repl)))))
(put 'guix-define-buffer-type 'lisp-indent-function 'defun)
@@ -1022,6 +1023,32 @@ Ask a user with PROMPT for continuing an operation."
:dry-run? (or guix-dry-run 'f))
nil 'source-download)))
+;;;###autoload
+(defun guix-apply-manifest (profile file &optional operation-buffer)
+ "Apply manifest from FILE to PROFILE.
+This function has the same meaning as 'guix package --manifest' command.
+See Info node `(guix) Invoking guix package' for details.
+
+Interactively, use the current profile and prompt for manifest
+FILE. With a prefix argument, also prompt for PROFILE."
+ (interactive
+ (let* ((default-profile (or guix-profile guix-current-profile))
+ (profile (if current-prefix-arg
+ (guix-profile-prompt)
+ default-profile))
+ (file (read-file-name "File with manifest: "))
+ (buffer (and guix-profile (current-buffer))))
+ (list profile file buffer)))
+ (when (or (not guix-operation-confirm)
+ (y-or-n-p (format "Apply manifest from '%s' to profile '%s'? "
+ file profile)))
+ (guix-eval-in-repl
+ (guix-make-guile-expression
+ 'guix-package
+ (concat "--profile=" profile)
+ (concat "--manifest=" file))
+ operation-buffer)))
+
;;; Pull
diff --git a/emacs/guix-list.el b/emacs/guix-list.el
index 600f2bd9bd..279de818c6 100644
--- a/emacs/guix-list.el
+++ b/emacs/guix-list.el
@@ -292,13 +292,11 @@ See `guix-list-marked' for the meaning of ARGS."
See `guix-list-get-marked' for details."
(mapcar #'car (apply #'guix-list-get-marked mark-names)))
-(defun guix-list-mark (mark-name &optional advance &rest args)
+(defun guix-list--mark (mark-name &optional advance &rest args)
"Put a mark on the current line.
Also add the current entry to `guix-list-marked' using its ID and ARGS.
MARK-NAME is a symbol from `guix-list-mark-alist'.
-If ADVANCE is non-nil, move forward by one line after marking.
-Interactively, put a general mark and move to the next line."
- (interactive '(general t))
+If ADVANCE is non-nil, move forward by one line after marking."
(let ((id (guix-list-current-id)))
(if (eq mark-name 'empty)
(setq guix-list-marked (assq-delete-all id guix-list-marked))
@@ -310,12 +308,21 @@ Interactively, put a general mark and move to the next line."
(tabulated-list-put-tag (guix-list-get-mark-string mark-name)
advance))
-(defun guix-list-mark-all (mark-name)
+(defun guix-list-mark (&optional arg)
+ "Mark the current line and move to the next line.
+With ARG, mark all lines."
+ (interactive "P")
+ (if arg
+ (guix-list-mark-all)
+ (guix-list--mark 'general t)))
+
+(defun guix-list-mark-all (&optional mark-name)
"Mark all lines with MARK-NAME mark.
MARK-NAME is a symbol from `guix-list-mark-alist'.
Interactively, put a general mark on all lines."
- (interactive '(general))
- (guix-list-for-each-line #'guix-list-mark mark-name))
+ (interactive)
+ (or mark-name (setq mark-name 'general))
+ (guix-list-for-each-line #'guix-list--mark mark-name))
(defun guix-list-unmark (&optional arg)
"Unmark the current line and move to the next line.
@@ -323,13 +330,13 @@ With ARG, unmark all lines."
(interactive "P")
(if arg
(guix-list-unmark-all)
- (guix-list-mark 'empty t)))
+ (guix-list--mark 'empty t)))
(defun guix-list-unmark-backward ()
"Move up one line and unmark it."
(interactive)
(forward-line -1)
- (guix-list-mark 'empty))
+ (guix-list--mark 'empty))
(defun guix-list-unmark-all ()
"Unmark all lines."
@@ -360,7 +367,6 @@ Same as `tabulated-list-sort', but also restore marks after sorting."
(define-key map (kbd "RET") 'guix-list-describe)
(define-key map (kbd "m") 'guix-list-mark)
(define-key map (kbd "*") 'guix-list-mark)
- (define-key map (kbd "M") 'guix-list-mark-all)
(define-key map (kbd "u") 'guix-list-unmark)
(define-key map (kbd "DEL") 'guix-list-unmark-backward)
(define-key map [remap tabulated-list-sort] 'guix-list-sort)
@@ -417,7 +423,7 @@ This macro defines the following functions:
,(concat "Put '" mark-name-str "' mark and move to the next line.\n"
"Also add the current entry to `guix-list-marked'.")
(interactive)
- (guix-list-mark ',mark-name t))))
+ (guix-list--mark ',mark-name t))))
marks-val)
(defun ,init-fun ()
@@ -531,7 +537,7 @@ AVAILABLE list, otherwise mark all DEFAULT outputs."
(guix-completing-read-multiple
prompt available nil t)
default)))
- (apply #'guix-list-mark mark t outputs)))
+ (apply #'guix-list--mark mark t outputs)))
(defun guix-package-list-mark-install (&optional arg)
"Mark the current package for installation and move to the next line.
@@ -606,7 +612,7 @@ accept an entry as argument."
(interactive)
(guix-list-mark-package-upgrades
(lambda (entry)
- (apply #'guix-list-mark
+ (apply #'guix-list--mark
'upgrade nil
(guix-get-installed-outputs entry)))))
@@ -661,7 +667,7 @@ The specification is suitable for `guix-process-package-actions'."
(installed (guix-get-key-val entry 'installed)))
(if installed
(user-error "This output is already installed")
- (guix-list-mark 'install t))))
+ (guix-list--mark 'install t))))
(defun guix-output-list-mark-delete ()
"Mark the current output for deletion and move to the next line."
@@ -670,7 +676,7 @@ The specification is suitable for `guix-process-package-actions'."
(let* ((entry (guix-list-current-entry))
(installed (guix-get-key-val entry 'installed)))
(if installed
- (guix-list-mark 'delete t)
+ (guix-list--mark 'delete t)
(user-error "This output is not installed"))))
(defun guix-output-list-mark-upgrade ()
@@ -683,13 +689,13 @@ The specification is suitable for `guix-process-package-actions'."
(user-error "This output is not installed"))
(when (or (guix-get-key-val entry 'obsolete)
(y-or-n-p "This output is not obsolete. Try to upgrade it anyway? "))
- (guix-list-mark 'upgrade t))))
+ (guix-list--mark 'upgrade t))))
(defun guix-output-list-mark-upgrades ()
"Mark all obsolete package outputs for upgrading."
(interactive)
(guix-list-mark-package-upgrades
- (lambda (_) (guix-list-mark 'upgrade))))
+ (lambda (_) (guix-list--mark 'upgrade))))
(defun guix-output-list-execute ()
"Perform actions on the marked outputs."
@@ -850,7 +856,7 @@ With ARG, mark all generations for deletion."
(interactive "P")
(if arg
(guix-list-mark-all 'delete)
- (guix-list-mark 'delete t)))
+ (guix-list--mark 'delete t)))
(defun guix-generation-list-execute ()
"Delete marked generations."
diff --git a/emacs/guix-main.scm b/emacs/guix-main.scm
index b1662fbb80..c6e4a8259b 100644
--- a/emacs/guix-main.scm
+++ b/emacs/guix-main.scm
@@ -878,7 +878,8 @@ OUTPUTS is a list of package outputs (may be an empty list)."
(format #t (N_ "~a package in profile~%"
"~a packages in profile~%"
count)
- count))))))))))
+ count)
+ (display-search-paths entries profile))))))))))
(define (delete-generations* profile generations)
"Delete GENERATIONS from PROFILE.
diff --git a/emacs/guix-pcomplete.el b/emacs/guix-pcomplete.el
new file mode 100644
index 0000000000..fa71dd5e21
--- /dev/null
+++ b/emacs/guix-pcomplete.el
@@ -0,0 +1,392 @@
+;;; guix-pcomplete.el --- Functions for completing guix commands -*- lexical-binding: t -*-
+
+;; Copyright © 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 completions for "guix" command that may be used in
+;; `shell', `eshell' and wherever `pcomplete' works.
+
+;;; Code:
+
+(require 'pcomplete)
+(require 'pcmpl-unix)
+(require 'cl-lib)
+(require 'guix-utils)
+
+
+;;; Regexps for parsing various "guix ..." outputs
+
+(defvar guix-pcomplete-parse-package-regexp
+ (rx bol (group (one-or-more (not blank))))
+ "Regexp used to find names of the packages.")
+
+(defvar guix-pcomplete-parse-command-regexp
+ (rx bol " "
+ (group wordchar (one-or-more (or wordchar "-"))))
+ "Regexp used to find guix commands.
+'Command' means any option not prefixed with '-'. For example,
+guix subcommand, system action, importer, etc.")
+
+(defvar guix-pcomplete-parse-long-option-regexp
+ (rx (or " " ", ")
+ (group "--" (one-or-more (or wordchar "-"))
+ (zero-or-one "=")))
+ "Regexp used to find long options.")
+
+(defvar guix-pcomplete-parse-short-option-regexp
+ (rx bol (one-or-more blank)
+ "-" (group (not (any "- "))))
+ "Regexp used to find short options.")
+
+(defvar guix-pcomplete-parse-linter-regexp
+ (rx bol "- " (group (one-or-more (or wordchar "-"))))
+ "Regexp used to find 'lint' checkers.")
+
+(defvar guix-pcomplete-parse-regexp-group 1
+ "Parenthesized expression of regexps used to find commands and
+options.")
+
+
+;;; Non-receivable completions
+
+(defvar guix-pcomplete-systems
+ '("x86_64-linux" "i686-linux" "armhf-linux" "mips64el-linux")
+ "List of supported systems.")
+
+(defvar guix-pcomplete-hash-formats
+ '("nix-base32" "base32" "base16" "hex" "hexadecimal")
+ "List of supported hash formats.")
+
+(defvar guix-pcomplete-refresh-subsets
+ '("core" "non-core")
+ "List of supported 'refresh' subsets.")
+
+(defvar guix-pcomplete-key-policies
+ '("interactive" "always" "never")
+ "List of supported key download policies.")
+
+
+;;; Interacting with guix
+
+(defcustom guix-pcomplete-guix-program (executable-find "guix")
+ "Name of the 'guix' program.
+It is used to find guix commands, options, packages, etc."
+ :type 'file
+ :group 'pcomplete
+ :group 'guix)
+
+(defun guix-pcomplete-run-guix (&rest args)
+ "Run `guix-pcomplete-guix-program' with ARGS.
+Insert the output to the current buffer."
+ (apply #'call-process
+ guix-pcomplete-guix-program nil t nil args))
+
+(defun guix-pcomplete-run-guix-and-search (regexp &optional group
+ &rest args)
+ "Run `guix-pcomplete-guix-program' with ARGS and search for matches.
+Return a list of strings matching REGEXP.
+GROUP specifies a parenthesized expression used in REGEXP."
+ (with-temp-buffer
+ (apply #'guix-pcomplete-run-guix args)
+ (goto-char (point-min))
+ (let (result)
+ (while (re-search-forward regexp nil t)
+ (push (match-string-no-properties group) result))
+ (nreverse result))))
+
+(defmacro guix-pcomplete-define-options-finder (name docstring regexp
+ &optional filter)
+ "Define function NAME to receive guix options and commands.
+
+The defined function takes an optional COMMAND argument. This
+function will run 'guix COMMAND --help' (or 'guix --help' if
+COMMAND is nil) using `guix-pcomplete-run-guix-and-search' and
+return its result.
+
+If FILTER is specified, it should be a function. The result is
+passed to this FILTER as argument and the result value of this
+function call is returned."
+ (declare (doc-string 2) (indent 1))
+ `(guix-memoized-defun ,name (&optional command)
+ ,docstring
+ (let* ((args '("--help"))
+ (args (if command (cons command args) args))
+ (res (apply #'guix-pcomplete-run-guix-and-search
+ ,regexp guix-pcomplete-parse-regexp-group args)))
+ ,(if filter
+ `(funcall ,filter res)
+ 'res))))
+
+(guix-pcomplete-define-options-finder guix-pcomplete-commands
+ "If COMMAND is nil, return a list of available guix commands.
+If COMMAND is non-nil (it should be a string), return available
+subcommands, actions, etc. for this guix COMMAND."
+ guix-pcomplete-parse-command-regexp)
+
+(guix-pcomplete-define-options-finder guix-pcomplete-long-options
+ "Return a list of available long options for guix COMMAND."
+ guix-pcomplete-parse-long-option-regexp)
+
+(guix-pcomplete-define-options-finder guix-pcomplete-short-options
+ "Return a string with available short options for guix COMMAND."
+ guix-pcomplete-parse-short-option-regexp
+ (lambda (list)
+ (mapconcat #'identity list "")))
+
+(guix-memoized-defun guix-pcomplete-all-packages ()
+ "Return a list of all available Guix packages."
+ (guix-pcomplete-run-guix-and-search
+ guix-pcomplete-parse-package-regexp
+ guix-pcomplete-parse-regexp-group
+ "package" "--list-available"))
+
+(guix-memoized-defun guix-pcomplete-installed-packages (&optional profile)
+ "Return a list of Guix packages installed in PROFILE."
+ (let* ((args (and profile
+ (list (concat "--profile=" profile))))
+ (args (append '("package" "--list-installed") args)))
+ (apply #'guix-pcomplete-run-guix-and-search
+ guix-pcomplete-parse-package-regexp
+ guix-pcomplete-parse-regexp-group
+ args)))
+
+(guix-memoized-defun guix-pcomplete-lint-checkers ()
+ "Return a list of all available lint checkers."
+ (guix-pcomplete-run-guix-and-search
+ guix-pcomplete-parse-linter-regexp
+ guix-pcomplete-parse-regexp-group
+ "lint" "--list-checkers"))
+
+
+;;; Completing
+
+(defvar guix-pcomplete-option-regexp (rx string-start "-")
+ "Regexp to match an option.")
+
+(defvar guix-pcomplete-long-option-regexp (rx string-start "--")
+ "Regexp to match a long option.")
+
+(defvar guix-pcomplete-long-option-with-arg-regexp
+ (rx string-start
+ (group "--" (one-or-more any)) "="
+ (group (zero-or-more any)))
+ "Regexp to match a long option with its argument.
+The first parenthesized group defines the option and the second
+group - the argument.")
+
+(defvar guix-pcomplete-short-option-with-arg-regexp
+ (rx string-start
+ (group "-" (not (any "-")))
+ (group (zero-or-more any)))
+ "Regexp to match a short option with its argument.
+The first parenthesized group defines the option and the second
+group - the argument.")
+
+(defun guix-pcomplete-match-option ()
+ "Return non-nil, if the current argument is an option."
+ (pcomplete-match guix-pcomplete-option-regexp 0))
+
+(defun guix-pcomplete-match-long-option ()
+ "Return non-nil, if the current argument is a long option."
+ (pcomplete-match guix-pcomplete-long-option-regexp 0))
+
+(defun guix-pcomplete-match-long-option-with-arg ()
+ "Return non-nil, if the current argument is a long option with value."
+ (pcomplete-match guix-pcomplete-long-option-with-arg-regexp 0))
+
+(defun guix-pcomplete-match-short-option-with-arg ()
+ "Return non-nil, if the current argument is a short option with value."
+ (pcomplete-match guix-pcomplete-short-option-with-arg-regexp 0))
+
+(defun guix-pcomplete-long-option-arg (option args)
+ "Return a long OPTION's argument from a list of arguments ARGS."
+ (let* ((re (concat "\\`" option "=\\(.*\\)"))
+ (args (cl-member-if (lambda (arg)
+ (string-match re arg))
+ args))
+ (cur (car args)))
+ (when cur
+ (match-string-no-properties 1 cur))))
+
+(defun guix-pcomplete-short-option-arg (option args)
+ "Return a short OPTION's argument from a list of arguments ARGS."
+ (let* ((re (concat "\\`" option "\\(.*\\)"))
+ (args (cl-member-if (lambda (arg)
+ (string-match re arg))
+ args))
+ (cur (car args)))
+ (when cur
+ (let ((arg (match-string-no-properties 1 cur)))
+ (if (string= "" arg)
+ (cadr args) ; take the next arg
+ arg)))))
+
+(defun guix-pcomplete-complete-comma-args (entries)
+ "Complete comma separated arguments using ENTRIES."
+ (let ((index pcomplete-index))
+ (while (= index pcomplete-index)
+ (let* ((args (if (or (guix-pcomplete-match-long-option-with-arg)
+ (guix-pcomplete-match-short-option-with-arg))
+ (pcomplete-match-string 2 0)
+ (pcomplete-arg 0)))
+ (input (if (string-match ".*,\\(.*\\)" args)
+ (match-string-no-properties 1 args)
+ args)))
+ (pcomplete-here* entries input)))))
+
+(defun guix-pcomplete-complete-command-arg (command)
+ "Complete argument for guix COMMAND."
+ (cond
+ ((member command
+ '("archive" "build" "environment" "lint" "refresh"))
+ (while t
+ (pcomplete-here (guix-pcomplete-all-packages))))
+ (t (pcomplete-here* (pcomplete-entries)))))
+
+(defun guix-pcomplete-complete-option-arg (command option &optional input)
+ "Complete argument for COMMAND's OPTION.
+INPUT is the current partially completed string."
+ (cl-flet ((option? (short long)
+ (or (string= option short)
+ (string= option long)))
+ (command? (&rest commands)
+ (member command commands))
+ (complete (entries)
+ (pcomplete-here entries input nil t))
+ (complete* (entries)
+ (pcomplete-here* entries input t)))
+ (cond
+ ((option? "-L" "--load-path")
+ (complete* (pcomplete-dirs)))
+ ((string= "--key-download" option)
+ (complete* guix-pcomplete-key-policies))
+
+ ((command? "package")
+ (cond
+ ;; For '--install[=]' and '--remove[=]', try to complete a package
+ ;; name (INPUT) after the "=" sign, and then the rest packages
+ ;; separated with spaces.
+ ((option? "-i" "--install")
+ (complete (guix-pcomplete-all-packages))
+ (while (not (guix-pcomplete-match-option))
+ (pcomplete-here (guix-pcomplete-all-packages))))
+ ((option? "-r" "--remove")
+ (let* ((profile (or (guix-pcomplete-short-option-arg
+ "-p" pcomplete-args)
+ (guix-pcomplete-long-option-arg
+ "--profile" pcomplete-args)))
+ (profile (and profile (expand-file-name profile))))
+ (complete (guix-pcomplete-installed-packages profile))
+ (while (not (guix-pcomplete-match-option))
+ (pcomplete-here (guix-pcomplete-installed-packages profile)))))
+ ((string= "--show" option)
+ (complete (guix-pcomplete-all-packages)))
+ ((option? "-p" "--profile")
+ (complete* (pcomplete-dirs)))
+ ((option? "-m" "--manifest")
+ (complete* (pcomplete-entries)))))
+
+ ((and (command? "archive" "build")
+ (option? "-s" "--system"))
+ (complete* guix-pcomplete-systems))
+
+ ((and (command? "build")
+ (option? "-r" "--root"))
+ (complete* (pcomplete-entries)))
+
+ ((and (command? "environment")
+ (option? "-l" "--load"))
+ (complete* (pcomplete-entries)))
+
+ ((and (command? "hash" "download")
+ (option? "-f" "--format"))
+ (complete* guix-pcomplete-hash-formats))
+
+ ((and (command? "lint")
+ (option? "-c" "--checkers"))
+ (guix-pcomplete-complete-comma-args
+ (guix-pcomplete-lint-checkers)))
+
+ ((and (command? "publish")
+ (option? "-u" "--user"))
+ (complete* (pcmpl-unix-user-names)))
+
+ ((and (command? "refresh")
+ (option? "-s" "--select"))
+ (complete* guix-pcomplete-refresh-subsets)))))
+
+(defun guix-pcomplete-complete-options (command)
+ "Complete options (with their arguments) for guix COMMAND."
+ (while (guix-pcomplete-match-option)
+ (let ((index pcomplete-index))
+ (if (guix-pcomplete-match-long-option)
+
+ ;; Long options.
+ (if (guix-pcomplete-match-long-option-with-arg)
+ (let ((option (pcomplete-match-string 1 0))
+ (arg (pcomplete-match-string 2 0)))
+ (guix-pcomplete-complete-option-arg
+ command option arg))
+
+ (pcomplete-here* (guix-pcomplete-long-options command))
+ ;; We support '--opt arg' style (along with '--opt=arg'),
+ ;; because 'guix package --install/--remove' may be used this
+ ;; way. So try to complete an argument after the option has
+ ;; been completed.
+ (unless (guix-pcomplete-match-option)
+ (guix-pcomplete-complete-option-arg
+ command (pcomplete-arg 0 -1))))
+
+ ;; Short options.
+ (let ((arg (pcomplete-arg 0)))
+ (if (> (length arg) 2)
+ ;; Support specifying an argument after a short option without
+ ;; spaces (for example, '-L/tmp/foo').
+ (guix-pcomplete-complete-option-arg
+ command
+ (substring-no-properties arg 0 2)
+ (substring-no-properties arg 2))
+ (pcomplete-opt (guix-pcomplete-short-options command))
+ (guix-pcomplete-complete-option-arg
+ command (pcomplete-arg 0 -1)))))
+
+ ;; If there were no completions, move to the next argument and get
+ ;; out if the last argument is achieved.
+ (when (= index pcomplete-index)
+ (if (= pcomplete-index pcomplete-last)
+ (throw 'pcompleted nil)
+ (pcomplete-next-arg))))))
+
+;;;###autoload
+(defun pcomplete/guix ()
+ "Completion for `guix'."
+ (let ((commands (guix-pcomplete-commands)))
+ (pcomplete-here* (cons "--help" commands))
+ (let ((command (pcomplete-arg 'first 1)))
+ (when (member command commands)
+ (guix-pcomplete-complete-options command)
+ (let ((subcommands (guix-pcomplete-commands command)))
+ (when subcommands
+ (pcomplete-here* subcommands)))
+ (guix-pcomplete-complete-options command)
+ (guix-pcomplete-complete-command-arg command)))))
+
+(provide 'guix-pcomplete)
+
+;;; guix-pcomplete.el ends here
diff --git a/emacs/guix-utils.el b/emacs/guix-utils.el
index 823c646610..dc0c58a114 100644
--- a/emacs/guix-utils.el
+++ b/emacs/guix-utils.el
@@ -1,6 +1,6 @@
-;;; guix-utils.el --- General utility functions
+;;; guix-utils.el --- General utility functions -*- lexical-binding: t -*-
-;; Copyright © 2014 Alex Kost <alezost@gmail.com>
+;; Copyright © 2014, 2015 Alex Kost <alezost@gmail.com>
;; This file is part of GNU Guix.
@@ -170,6 +170,35 @@ accessed with KEYS."
"Same as `diff', but use `guix-diff-switches' as default."
(diff old new (or switches guix-diff-switches) no-async))
+
+;;; Memoizing
+
+(defun guix-memoize (function)
+ "Return a memoized version of FUNCTION."
+ (let ((cache (make-hash-table :test 'equal)))
+ (lambda (&rest args)
+ (let ((result (gethash args cache 'not-found)))
+ (if (eq result 'not-found)
+ (let ((result (apply function args)))
+ (puthash args result cache)
+ result)
+ result)))))
+
+(defmacro guix-memoized-defun (name arglist docstring &rest body)
+ "Define a memoized function NAME.
+See `defun' for the meaning of arguments."
+ (declare (doc-string 3) (indent 2))
+ `(defalias ',name
+ (guix-memoize (lambda ,arglist ,@body))
+ ;; Add '(name args ...)' string with real arglist to the docstring,
+ ;; because *Help* will display '(name &rest ARGS)' for a defined
+ ;; function (since `guix-memoize' returns a lambda with '(&rest
+ ;; args)').
+ ,(format "(%S %s)\n\n%s"
+ name
+ (mapconcat #'symbol-name arglist " ")
+ docstring)))
+
(provide 'guix-utils)
;;; guix-utils.el ends here