608 lines
23 KiB
EmacsLisp
608 lines
23 KiB
EmacsLisp
;;; guix-base.el --- Common definitions
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;; Copyright © 2014 Alex Kost <alezost@gmail.com>
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;; This file is part of GNU Guix.
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;; GNU Guix is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Guix is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This file provides some base and common definitions for guix.el
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;; package.
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;; List and info buffers have many common patterns that are defined
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;; using `guix-define-buffer-type' macro from this file.
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;;; Code:
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(require 'cl-lib)
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(require 'guix-backend)
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(require 'guix-utils)
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;;; Profiles
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(defvar guix-user-profile
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(expand-file-name "~/.guix-profile")
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"User profile.")
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(defvar guix-default-profile
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(concat (or (getenv "NIX_STATE_DIR") "/var/guix")
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"/profiles/per-user/"
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(getenv "USER")
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"/guix-profile")
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"Default Guix profile.")
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(defvar guix-current-profile guix-default-profile
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"Current profile.")
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(defun guix-set-current-profile (path)
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"Set `guix-current-profile' to PATH.
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Interactively, prompt for PATH. With prefix, use
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`guix-default-profile'."
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(interactive
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(list (if current-prefix-arg
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guix-default-profile
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(read-file-name "Set profile: "
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(file-name-directory guix-current-profile)))))
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(let ((path (directory-file-name (expand-file-name path))))
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(setq guix-current-profile
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(if (string= path guix-user-profile)
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guix-default-profile
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path))
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(message "Current profile has been set to '%s'."
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guix-current-profile)))
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;;; Parameters of the entries
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(defvar guix-param-titles
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'((package
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(id . "ID")
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(name . "Name")
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(version . "Version")
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(license . "License")
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(synopsis . "Synopsis")
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(description . "Description")
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(home-url . "Home page")
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(outputs . "Outputs")
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(inputs . "Inputs")
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(native-inputs . "Native inputs")
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(propagated-inputs . "Propagated inputs")
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(location . "Location")
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(installed . "Installed"))
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(installed
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(path . "Installed path")
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(dependencies . "Dependencies")
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(output . "Output"))
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(generation
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(id . "ID")
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(number . "Number")
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(prev-number . "Previous number")
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(path . "Path")
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(time . "Time")))
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"List for defining titles of entry parameters.
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Titles are used for displaying information about entries.
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Each element of the list has a form:
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(ENTRY-TYPE . ((PARAM . TITLE) ...))")
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(defun guix-get-param-title (entry-type param)
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"Return title of an ENTRY-TYPE entry parameter PARAM."
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(or (guix-get-key-val guix-param-titles
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entry-type param)
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(prog1 (symbol-name param)
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(message "Couldn't find title for '%S %S'."
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entry-type param))))
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(defun guix-get-name-spec (name version &optional output)
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"Return Guix package specification by its NAME, VERSION and OUTPUT."
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(concat name "-" version
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(when output (concat ":" output))))
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(defun guix-get-full-name (entry &optional output)
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"Return name specification of the package ENTRY and OUTPUT."
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(guix-get-name-spec (guix-get-key-val entry 'name)
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(guix-get-key-val entry 'version)
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output))
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(defun guix-get-installed-outputs (entry)
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"Return list of installed outputs for the package ENTRY."
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(mapcar (lambda (installed-entry)
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(guix-get-key-val installed-entry 'output))
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(guix-get-key-val entry 'installed)))
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(defun guix-get-entry-by-id (id entries)
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"Return entry from ENTRIES by entry ID."
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(cl-find-if (lambda (entry)
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(equal id (guix-get-key-val entry 'id)))
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entries))
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;;; Location of the packages
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(defvar guix-directory nil
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"Default Guix directory.
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If it is not set by a user, it is set after starting Guile REPL.
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This directory is used to define location of the packages.")
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(defun guix-set-directory ()
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"Set `guix-directory' if needed."
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(or guix-directory
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(setq guix-directory
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(guix-eval-read "%guix-dir"))))
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(add-hook 'guix-after-start-repl-hook 'guix-set-directory)
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(defun guix-find-location (location)
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"Go to LOCATION of a package.
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LOCATION is a string of the form:
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\"PATH:LINE:COLUMN\"
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If PATH is relative, it is considered to be relative to
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`guix-directory'."
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(cl-multiple-value-bind (path line col)
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(split-string location ":")
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(let ((file (expand-file-name path guix-directory))
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(line (string-to-number line))
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(col (string-to-number col)))
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(find-file file)
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(goto-char (point-min))
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(forward-line (- line 1))
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(move-to-column col)
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(recenter 1))))
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;;; Common definitions for buffer types
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(defvar-local guix-entries nil
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"List of the currently displayed entries.
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Each element of the list is alist with entry info of the
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following form:
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((PARAM . VAL) ...)
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PARAM is a name of the entry parameter.
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VAL is a value of this parameter.")
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(put 'guix-entries 'permanent-local t)
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(defvar-local guix-search-type nil
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"Type of the current search.")
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(put 'guix-search-type 'permanent-local t)
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(defvar-local guix-search-vals nil
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"Values of the current search.")
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(put 'guix-search-vals 'permanent-local t)
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(defsubst guix-set-vars (entries search-type search-vals)
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(setq guix-entries entries
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guix-search-type search-type
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guix-search-vals search-vals))
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(defmacro guix-define-buffer-type (buf-type entry-type &rest args)
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"Define common stuff for BUF-TYPE buffers for displaying entries.
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ENTRY-TYPE is a type of displayed entries (see
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`guix-get-entries').
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In the text below TYPE means ENTRY-TYPE-BUF-TYPE.
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This macro defines `guix-TYPE-mode', a custom group, several user
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variables and the following functions:
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- `guix-TYPE-get-params-for-receiving'
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- `guix-TYPE-revert'
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- `guix-TYPE-redisplay'
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- `guix-TYPE-make-history-item'
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- `guix-TYPE-set'
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- `guix-TYPE-show'
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- `guix-TYPE-get-show'
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The following stuff should be defined outside this macro:
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- `guix-BUF-TYPE-mode' - parent mode for the defined mode.
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- `guix-BUF-TYPE-insert-entries' - function for inserting
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entries in the current buffer; it is called with 2 arguments:
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entries of the form of `guix-entries' and ENTRY-TYPE.
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- `guix-BUF-TYPE-get-displayed-params' - function returning a
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list of parameters displayed in the current buffer; it is
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called with ENTRY-TYPE as argument.
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- `guix-TYPE-mode-initialize' (optional) - function for
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additional mode settings; it is called without arguments.
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Remaining argument (ARGS) should have a form [KEYWORD VALUE] ... The
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following keywords are available:
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- `:required' - default value for the defined
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`guix-TYPE-required-params' variable.
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- `:history-size' - default value for the defined
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`guix-TYPE-history-size' variable.
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- `:revert' - default value for the defined
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`guix-TYPE-revert-no-confirm' variable."
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(let* ((entry-type-str (symbol-name entry-type))
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(buf-type-str (symbol-name buf-type))
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(Entry-type-str (capitalize entry-type-str))
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(Buf-type-str (capitalize buf-type-str))
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(entry-str (concat entry-type-str " entries"))
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(buf-str (concat buf-type-str " buffer"))
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(prefix (concat "guix-" entry-type-str "-" buf-type-str))
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(group (intern prefix))
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(mode-map-str (concat prefix "-mode-map"))
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(mode-map (intern mode-map-str))
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(parent-mode (intern (concat "guix-" buf-type-str "-mode")))
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(mode (intern (concat prefix "-mode")))
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(mode-init-fun (intern (concat prefix "-mode-initialize")))
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(buf-name-var (intern (concat prefix "-buffer-name")))
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(revert-var (intern (concat prefix "-revert-no-confirm")))
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(revert-fun (intern (concat prefix "-revert")))
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(redisplay-fun (intern (concat prefix "-redisplay")))
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(history-var (intern (concat prefix "-history-size")))
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(history-fun (intern (concat prefix "-make-history-item")))
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(params-var (intern (concat prefix "-required-params")))
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(params-fun (intern (concat prefix "-get-params-for-receiving")))
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(set-fun (intern (concat prefix "-set")))
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(show-fun (intern (concat prefix "-show")))
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(get-show-fun (intern (concat prefix "-get-show")))
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(revert-val nil)
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(history-val 20)
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(params-val '(id)))
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;; Process the keyword args.
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(while (keywordp (car args))
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(pcase (pop args)
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(`:required (setq params-val (pop args)))
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(`:history-size (setq history-val (pop args)))
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(`:revert (setq revert-val (pop args)))
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(_ (pop args))))
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`(progn
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(defgroup ,group nil
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,(concat Buf-type-str " buffer with " entry-str ".")
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:prefix ,(concat prefix "-")
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:group ',(intern (concat "guix-" buf-type-str)))
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(defcustom ,buf-name-var ,(format "*Guix %s %s*"
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Entry-type-str Buf-type-str)
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,(concat "Default name of the " buf-str " for displaying " entry-str ".")
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:type 'string
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:group ',group)
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(defcustom ,history-var ,history-val
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,(concat "Maximum number of items saved in the history of the " buf-str ".\n"
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"If 0, the history is disabled.")
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:type 'integer
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:group ',group)
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(defcustom ,revert-var ,revert-val
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,(concat "If non-nil, do not ask to confirm for reverting the " buf-str ".")
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:type 'boolean
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:group ',group)
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(defvar ,params-var ',params-val
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,(concat "List of required " entry-type-str " parameters.\n\n"
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"Displayed parameters and parameters from this list are received\n"
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"for each " entry-type-str ".\n\n"
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"May be a special value `all', in which case all supported\n"
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"parameters are received (this may be very slow for a big number\n"
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"of entries).\n\n"
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"Do not remove `id' from this list as it is required for\n"
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"identifying an entry."))
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(define-derived-mode ,mode ,parent-mode ,(concat "Guix-" Buf-type-str)
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,(concat "Major mode for displaying information about " entry-str ".\n\n"
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"\\{" mode-map-str "}")
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(setq-local revert-buffer-function ',revert-fun)
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(setq-local guix-history-size ,history-var)
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(and (fboundp ',mode-init-fun) (,mode-init-fun)))
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(let ((map ,mode-map))
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(define-key map (kbd "l") 'guix-history-back)
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(define-key map (kbd "r") 'guix-history-forward)
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(define-key map (kbd "g") 'revert-buffer)
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(define-key map (kbd "R") ',redisplay-fun)
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(define-key map (kbd "C-c C-z") 'guix-switch-to-repl))
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(defun ,params-fun ()
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,(concat "Return " entry-type-str " parameters that should be received.")
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(unless (equal ,params-var 'all)
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(cl-union ,params-var
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(,(intern (concat "guix-" buf-type-str "-get-displayed-params"))
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',entry-type))))
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(defun ,revert-fun (_ignore-auto noconfirm)
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"Update information in the current buffer.
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The function is suitable for `revert-buffer-function'.
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See `revert-buffer' for the meaning of NOCONFIRM."
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(when (or ,revert-var
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noconfirm
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(y-or-n-p "Update current information? "))
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(let ((entries (guix-get-entries ',entry-type guix-search-type
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guix-search-vals (,params-fun))))
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(,set-fun entries guix-search-type guix-search-vals t))))
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(defun ,redisplay-fun ()
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"Redisplay current information.
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This function will not update the information, use
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\"\\[revert-buffer]\" if you want the full update."
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(interactive)
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(,show-fun guix-entries)
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(guix-result-message guix-entries ',entry-type
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guix-search-type guix-search-vals))
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(defun ,history-fun ()
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"Make and return a history item for the current buffer."
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(list (lambda (entries search-type search-vals)
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(,show-fun entries)
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(guix-set-vars entries search-type search-vals)
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(guix-result-message entries ',entry-type
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search-type search-vals))
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guix-entries guix-search-type guix-search-vals))
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(defun ,set-fun (entries search-type search-vals &optional history-replace)
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,(concat "Set up the " buf-str " for displaying " entry-str ".\n\n"
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"Display ENTRIES, set variables and make history item.\n\n"
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"ENTRIES should have a form of `guix-entries'.\n\n"
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"See `guix-get-entries' for the meaning of SEARCH-TYPE and\n"
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"SEARCH-VALS.\n\n"
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"If HISTORY-REPLACE is non-nil, replace current history item,\n"
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"otherwise add the new one.")
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(when entries
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(let ((buf (if (eq major-mode ',mode)
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(current-buffer)
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(get-buffer-create ,buf-name-var))))
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(with-current-buffer buf
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(,show-fun entries)
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(guix-set-vars entries search-type search-vals)
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(funcall (if history-replace
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#'guix-history-replace
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#'guix-history-add)
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(,history-fun)))
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(pop-to-buffer buf
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'((display-buffer-reuse-window
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display-buffer-same-window)))))
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(guix-result-message entries ',entry-type
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search-type search-vals))
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(defun ,show-fun (entries)
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,(concat "Display " entry-type-str " ENTRIES in the current " buf-str ".")
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(let ((inhibit-read-only t))
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(erase-buffer)
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(,mode)
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(,(intern (concat "guix-" buf-type-str "-insert-entries"))
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entries ',entry-type)
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(goto-char (point-min))))
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(defun ,get-show-fun (search-type &rest search-vals)
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,(concat "Search for " entry-str " and show results in the " buf-str ".\n"
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"See `guix-get-entries' for the meaning of SEARCH-TYPE and\n"
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"SEARCH-VALS.")
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(let ((entries (guix-get-entries ',entry-type search-type
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search-vals (,params-fun))))
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(,set-fun entries search-type search-vals))))))
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(put 'guix-define-buffer-type 'lisp-indent-function 'defun)
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;;; Messages
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(defvar guix-messages
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'((package
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(id
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(0 "Packages not found.")
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(1 "")
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(many "%d packages." count))
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(name
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(0 "The package '%s' not found." val)
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(1 "A single package with name '%s'." val)
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(many "%d packages with '%s' name." count val))
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(regexp
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(0 "No packages matching '%s'." val)
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(1 "A single package matching '%s'." val)
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(many "%d packages matching '%s'." count val))
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(all-available
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(0 "No packages are available for some reason.")
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(1 "A single available package (that's strange).")
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(many "%d available packages." count))
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(newest-available
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(0 "No packages are available for some reason.")
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(1 "A single newest available package (that's strange).")
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(many "%d newest available packages." count))
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(installed
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(0 "No installed packages.")
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(1 "A single installed package.")
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(many "%d installed packages." count))
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(obsolete
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(0 "No obsolete packages.")
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(1 "A single obsolete package.")
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(many "%d obsolete packages." count))
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(generation
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(0 "No packages installed in generation %d." val)
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(1 "A single package installed in generation %d." val)
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(many "%d packages installed in generation %d." count val)))
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(generation
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(id
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(0 "Generations not found.")
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(1 "")
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(many "%d generations." count))
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(last
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(0 "No available generations.")
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(1 "The last generation.")
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(many "%d last generations." count))
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(all
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(0 "No available generations.")
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(1 "A single available generation.")
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(many "%d available generations." count)))))
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(defun guix-result-message (entries entry-type search-type search-vals)
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"Display an appropriate message after displaying ENTRIES."
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(let* ((val (car search-vals))
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(count (length entries))
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(count-key (if (> count 1) 'many count))
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(msg-spec (guix-get-key-val guix-messages
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entry-type search-type count-key))
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(format (car msg-spec))
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(args (cdr msg-spec)))
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(mapc (lambda (subst)
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(setq args (cl-substitute (car subst) (cdr subst) args)))
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(list (cons count 'count)
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(cons val 'val)))
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(apply #'message format args)))
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;;; Getting info about packages and generations
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(defun guix-get-entries (entry-type search-type search-vals &optional params)
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"Search for entries of ENTRY-TYPE.
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Call an appropriate scheme function and return a list of the
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form of `guix-entries'.
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ENTRY-TYPE should be one of the following symbols: `package' or
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`generation'.
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SEARCH-TYPE may be one of the following symbols:
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- If ENTRY-TYPE is `package': `id', `name', `regexp',
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`all-available', `newest-available', `installed', `obsolete',
|
||
`generation'.
|
||
|
||
- If ENTRY-TYPE is `generation': `id', `last', `all'.
|
||
|
||
PARAMS is a list of parameters for receiving. If nil, get
|
||
information with all available parameters."
|
||
(guix-eval-read (guix-make-guile-expression
|
||
'get-entries
|
||
guix-current-profile params
|
||
entry-type search-type search-vals)))
|
||
|
||
|
||
;;; Actions on packages and generations
|
||
|
||
(defcustom guix-operation-confirm t
|
||
"If nil, do not prompt to confirm an operation."
|
||
:type 'boolean
|
||
:group 'guix)
|
||
|
||
(defcustom guix-use-substitutes t
|
||
"If non-nil, use substitutes for the Guix packages."
|
||
:type 'boolean
|
||
:group 'guix)
|
||
|
||
(defvar guix-dry-run nil
|
||
"If non-nil, do not perform the real actions, just simulate.")
|
||
|
||
(defvar guix-temp-buffer-name " *Guix temp*"
|
||
"Name of a buffer used for displaying info before executing operation.")
|
||
|
||
(defun guix-process-package-actions (&rest actions)
|
||
"Process package ACTIONS.
|
||
Each action is a list of the form:
|
||
|
||
(ACTION-TYPE PACKAGE-SPEC ...)
|
||
|
||
ACTION-TYPE is one of the following symbols: `install',
|
||
`upgrade', `remove'/`delete'.
|
||
PACKAGE-SPEC should have the following form: (ID [OUTPUT] ...)."
|
||
(let (install upgrade remove)
|
||
(mapc (lambda (action)
|
||
(let ((action-type (car action))
|
||
(specs (cdr action)))
|
||
(cl-case action-type
|
||
(install (setq install (append install specs)))
|
||
(upgrade (setq upgrade (append upgrade specs)))
|
||
((remove delete) (setq remove (append remove specs))))))
|
||
actions)
|
||
(when (guix-continue-package-operation-p
|
||
:install install :upgrade upgrade :remove remove)
|
||
(guix-eval-in-repl
|
||
(guix-make-guile-expression
|
||
'process-package-actions guix-current-profile
|
||
:install install :upgrade upgrade :remove remove
|
||
:use-substitutes? (or guix-use-substitutes 'f)
|
||
:dry-run? (or guix-dry-run 'f))))))
|
||
|
||
(cl-defun guix-continue-package-operation-p (&key install upgrade remove)
|
||
"Return non-nil if a package operation should be continued.
|
||
Ask a user if needed (see `guix-operation-confirm').
|
||
INSTALL, UPGRADE, REMOVE are 'package action specifications'.
|
||
See `guix-process-package-actions' for details."
|
||
(or (null guix-operation-confirm)
|
||
(let* ((entries (guix-get-entries
|
||
'package 'id
|
||
(list (append (mapcar #'car install)
|
||
(mapcar #'car upgrade)
|
||
(mapcar #'car remove)))
|
||
'(id name version location)))
|
||
(install-strings (guix-get-package-strings install entries))
|
||
(upgrade-strings (guix-get-package-strings upgrade entries))
|
||
(remove-strings (guix-get-package-strings remove entries)))
|
||
(if (or install-strings upgrade-strings remove-strings)
|
||
(let ((buf (get-buffer-create guix-temp-buffer-name)))
|
||
(with-current-buffer buf
|
||
(setq-local cursor-type nil)
|
||
(setq buffer-read-only nil)
|
||
(erase-buffer)
|
||
(guix-insert-package-strings install-strings "install")
|
||
(guix-insert-package-strings upgrade-strings "upgrade")
|
||
(guix-insert-package-strings remove-strings "remove")
|
||
(let ((win (temp-buffer-window-show
|
||
buf
|
||
'((display-buffer-reuse-window
|
||
display-buffer-at-bottom)
|
||
(window-height . fit-window-to-buffer)))))
|
||
(prog1 (y-or-n-p "Continue operation? ")
|
||
(quit-window nil win)))))
|
||
(message "Nothing to be done. If the REPL was restarted, information is not up-to-date.")
|
||
nil))))
|
||
|
||
(defun guix-get-package-strings (specs entries)
|
||
"Return short package descriptions for performing package actions.
|
||
See `guix-process-package-actions' for the meaning of SPECS.
|
||
ENTRIES is a list of package entries to get info about packages."
|
||
(delq nil
|
||
(mapcar
|
||
(lambda (spec)
|
||
(let* ((id (car spec))
|
||
(outputs (cdr spec))
|
||
(entry (guix-get-entry-by-id id entries)))
|
||
(when entry
|
||
(let ((location (guix-get-key-val entry 'location)))
|
||
(concat (guix-get-full-name entry)
|
||
(when outputs
|
||
(concat ":"
|
||
(mapconcat #'identity outputs ",")))
|
||
(when location
|
||
(concat "\t(" location ")")))))))
|
||
specs)))
|
||
|
||
(defun guix-insert-package-strings (strings action)
|
||
"Insert information STRINGS at point for performing package ACTION."
|
||
(when strings
|
||
(insert "Package(s) to " (guix-get-string action 'bold) ":\n")
|
||
(mapc (lambda (str)
|
||
(insert " " str "\n"))
|
||
strings)
|
||
(insert "\n")))
|
||
|
||
(provide 'guix-base)
|
||
|
||
;;; guix-base.el ends here
|