647 lines
24 KiB
EmacsLisp
647 lines
24 KiB
EmacsLisp
;;; guix-base.el --- Common definitions -*- lexical-binding: t -*-
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;; Copyright © 2014, 2015 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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;;; Code:
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(require 'cl-lib)
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(require 'guix-profiles)
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(require 'guix-backend)
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(require 'guix-entry)
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(require 'guix-guile)
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(require 'guix-utils)
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(require 'guix-ui)
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;;; Parameters of the entries
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(defun guix-package-name-specification (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-package-entry->name-specification (entry &optional output)
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"Return name specification of the package ENTRY and OUTPUT."
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(guix-package-name-specification
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(guix-entry-value entry 'name)
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(guix-entry-value entry 'version)
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(or output (guix-entry-value entry 'output))))
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(defun guix-package-entries->name-specifications (entries)
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"Return name specifications by the package or output ENTRIES."
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(cl-remove-duplicates (mapcar #'guix-package-entry->name-specification
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entries)
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:test #'string=))
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(defun guix-package-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-entry-value installed-entry 'output))
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(guix-entry-value entry 'installed)))
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(defun guix-package-id-and-output-by-output-id (oid)
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"Return list (PACKAGE-ID OUTPUT) by output id OID."
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(cl-multiple-value-bind (pid-str output)
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(split-string oid ":")
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(let ((pid (string-to-number pid-str)))
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(list (if (= 0 pid) pid-str pid)
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output))))
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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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(defun guix-package-location (id-or-name)
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"Return location of a package with ID-OR-NAME.
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For the meaning of location, see `guix-find-location'."
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(guix-eval-read (guix-make-guile-expression
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'package-location-string id-or-name)))
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;;; Getting and displaying info about packages and generations
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(defcustom guix-package-list-type 'output
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"Define how to display packages in a list buffer.
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May be a symbol `package' or `output' (if `output', display each
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output on a separate line; if `package', display each package on
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a separate line)."
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:type '(choice (const :tag "List of packages" package)
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(const :tag "List of outputs" output))
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:group 'guix)
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(defcustom guix-package-info-type 'package
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"Define how to display packages in an info buffer.
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May be a symbol `package' or `output' (if `output', display each
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output separately; if `package', display outputs inside a package
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information)."
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:type '(choice (const :tag "Display packages" package)
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(const :tag "Display outputs" output))
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:group 'guix)
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;;; Generations
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(defcustom guix-generation-packages-buffer-name-function
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#'guix-generation-packages-buffer-name-default
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"Function used to define name of a buffer with generation packages.
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This function is called with 2 arguments: PROFILE (string) and
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GENERATION (number)."
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:type '(choice (function-item guix-generation-packages-buffer-name-default)
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(function-item guix-generation-packages-buffer-name-long)
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(function :tag "Other function"))
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:group 'guix)
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(defcustom guix-generation-packages-update-buffer t
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"If non-nil, always update list of packages during comparing generations.
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If nil, generation packages are received only once. So when you
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compare generation 1 and generation 2, the packages for both
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generations will be received. Then if you compare generation 1
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and generation 3, only the packages for generation 3 will be
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received. Thus if you use comparing of different generations a
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lot, you may set this variable to nil to improve the
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performance."
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:type 'boolean
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:group 'guix)
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(defvar guix-output-name-width 30
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"Width of an output name \"column\".
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This variable is used in auxiliary buffers for comparing generations.")
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(defun guix-generation-file (profile generation)
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"Return the file name of a PROFILE's GENERATION."
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(format "%s-%s-link" profile generation))
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(defun guix-manifest-file (profile &optional generation)
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"Return the file name of a PROFILE's manifest.
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If GENERATION number is specified, return manifest file name for
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this generation."
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(expand-file-name "manifest"
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(if generation
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(guix-generation-file profile generation)
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profile)))
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(defun guix-generation-packages (profile generation)
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"Return a list of sorted packages installed in PROFILE's GENERATION.
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Each element of the list is a list of the package specification and its path."
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(let ((names+paths (guix-eval-read
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(guix-make-guile-expression
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'generation-package-specifications+paths
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profile generation))))
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(sort names+paths
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(lambda (a b)
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(string< (car a) (car b))))))
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(defun guix-generation-packages-buffer-name-default (profile generation)
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"Return name of a buffer for displaying GENERATION's package outputs.
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Use base name of PROFILE path."
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(let ((profile-name (file-name-base (directory-file-name profile))))
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(format "*Guix %s: generation %s*"
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profile-name generation)))
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(defun guix-generation-packages-buffer-name-long (profile generation)
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"Return name of a buffer for displaying GENERATION's package outputs.
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Use the full PROFILE path."
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(format "*Guix generation %s (%s)*"
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generation profile))
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(defun guix-generation-packages-buffer-name (profile generation)
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"Return name of a buffer for displaying GENERATION's package outputs."
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(let ((fun (if (functionp guix-generation-packages-buffer-name-function)
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guix-generation-packages-buffer-name-function
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#'guix-generation-packages-buffer-name-default)))
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(funcall fun profile generation)))
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(defun guix-generation-insert-package (name path)
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"Insert package output NAME and PATH at point."
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(insert name)
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(indent-to guix-output-name-width 2)
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(insert path "\n"))
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(defun guix-generation-insert-packages (buffer profile generation)
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"Insert package outputs installed in PROFILE's GENERATION in BUFFER."
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(with-current-buffer buffer
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(setq buffer-read-only nil
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indent-tabs-mode nil)
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(erase-buffer)
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(mapc (lambda (name+path)
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(guix-generation-insert-package
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(car name+path) (cadr name+path)))
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(guix-generation-packages profile generation))))
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(defun guix-generation-packages-buffer (profile generation)
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"Return buffer with package outputs installed in PROFILE's GENERATION.
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Create the buffer if needed."
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(let ((buf-name (guix-generation-packages-buffer-name
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profile generation)))
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(or (and (null guix-generation-packages-update-buffer)
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(get-buffer buf-name))
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(let ((buf (get-buffer-create buf-name)))
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(guix-generation-insert-packages buf profile generation)
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buf))))
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(defun guix-profile-generation-manifest-file (generation)
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"Return the file name of a GENERATION's manifest.
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GENERATION is a generation number of the current profile."
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(guix-manifest-file (guix-ui-current-profile) generation))
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(defun guix-profile-generation-packages-buffer (generation)
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"Insert GENERATION's package outputs in a buffer and return it.
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GENERATION is a generation number of the current profile."
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(guix-generation-packages-buffer (guix-ui-current-profile)
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generation))
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;;; Actions on packages and generations
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(defface guix-operation-option-key
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'((t :inherit font-lock-warning-face))
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"Face used for the keys of operation options."
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:group 'guix-faces)
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(defcustom guix-operation-confirm t
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"If nil, do not prompt to confirm an operation."
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:type 'boolean
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:group 'guix)
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(defcustom guix-use-substitutes t
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"If non-nil, use substitutes for the Guix packages."
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:type 'boolean
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:group 'guix)
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(defvar guix-dry-run nil
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"If non-nil, do not perform the real actions, just simulate.")
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(defvar guix-temp-buffer-name " *Guix temp*"
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"Name of a buffer used for displaying info before executing operation.")
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(defvar guix-operation-option-true-string "yes"
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"String displayed in the mode-line when operation option is t.")
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(defvar guix-operation-option-false-string "no "
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"String displayed in the mode-line when operation option is nil.")
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(defvar guix-operation-option-separator " | "
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"String used in the mode-line to separate operation options.")
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(defvar guix-operation-options
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'((?s "substitutes" guix-use-substitutes)
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(?d "dry-run" guix-dry-run))
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"List of available operation options.
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Each element of the list has a form:
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(KEY NAME VARIABLE)
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KEY is a character that may be pressed during confirmation to
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toggle the option.
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NAME is a string displayed in the mode-line.
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VARIABLE is a name of an option variable.")
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(defun guix-operation-option-by-key (key)
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"Return operation option by KEY (character)."
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(assq key guix-operation-options))
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(defun guix-operation-option-key (option)
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"Return key (character) of the operation OPTION."
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(car option))
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(defun guix-operation-option-name (option)
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"Return name of the operation OPTION."
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(nth 1 option))
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(defun guix-operation-option-variable (option)
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"Return name of the variable of the operation OPTION."
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(nth 2 option))
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(defun guix-operation-option-value (option)
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"Return boolean value of the operation OPTION."
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(symbol-value (guix-operation-option-variable option)))
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(defun guix-operation-option-string-value (option)
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"Convert boolean value of the operation OPTION to string and return it."
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(if (guix-operation-option-value option)
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guix-operation-option-true-string
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guix-operation-option-false-string))
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(defun guix-process-package-actions (profile actions
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&optional operation-buffer)
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"Process package ACTIONS on PROFILE.
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Each action is a list of the form:
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(ACTION-TYPE PACKAGE-SPEC ...)
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ACTION-TYPE is one of the following symbols: `install',
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`upgrade', `remove'/`delete'.
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PACKAGE-SPEC should have the following form: (ID [OUTPUT] ...)."
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(let (install upgrade remove)
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(mapc (lambda (action)
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(let ((action-type (car action))
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(specs (cdr action)))
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(cl-case action-type
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(install (setq install (append install specs)))
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(upgrade (setq upgrade (append upgrade specs)))
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((remove delete) (setq remove (append remove specs))))))
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actions)
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(when (guix-continue-package-operation-p
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profile
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:install install :upgrade upgrade :remove remove)
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(guix-eval-in-repl
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(guix-make-guile-expression
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'process-package-actions profile
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:install install :upgrade upgrade :remove remove
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:use-substitutes? (or guix-use-substitutes 'f)
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:dry-run? (or guix-dry-run 'f))
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(and (not guix-dry-run) operation-buffer)))))
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(cl-defun guix-continue-package-operation-p (profile
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&key install upgrade remove)
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"Return non-nil if a package operation should be continued.
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Ask a user if needed (see `guix-operation-confirm').
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INSTALL, UPGRADE, REMOVE are 'package action specifications'.
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See `guix-process-package-actions' for details."
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(or (null guix-operation-confirm)
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(let* ((entries (guix-ui-get-entries
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profile 'package 'id
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(append (mapcar #'car install)
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(mapcar #'car upgrade)
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(mapcar #'car remove))
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'(id name version location)))
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(install-strings (guix-get-package-strings install entries))
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(upgrade-strings (guix-get-package-strings upgrade entries))
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(remove-strings (guix-get-package-strings remove entries)))
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(if (or install-strings upgrade-strings remove-strings)
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(let ((buf (get-buffer-create guix-temp-buffer-name)))
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(with-current-buffer buf
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(setq-local cursor-type nil)
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(setq buffer-read-only nil)
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(erase-buffer)
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(insert "Profile: " profile "\n\n")
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(guix-insert-package-strings install-strings "install")
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(guix-insert-package-strings upgrade-strings "upgrade")
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(guix-insert-package-strings remove-strings "remove")
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(let ((win (temp-buffer-window-show
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buf
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'((display-buffer-reuse-window
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display-buffer-at-bottom)
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(window-height . fit-window-to-buffer)))))
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(prog1 (guix-operation-prompt)
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(quit-window nil win)))))
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(message "Nothing to be done. If the REPL was restarted, information is not up-to-date.")
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nil))))
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(defun guix-get-package-strings (specs entries)
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"Return short package descriptions for performing package actions.
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See `guix-process-package-actions' for the meaning of SPECS.
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ENTRIES is a list of package entries to get info about packages."
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(delq nil
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(mapcar
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(lambda (spec)
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(let* ((id (car spec))
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(outputs (cdr spec))
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(entry (guix-entry-by-id id entries)))
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(when entry
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(let ((location (guix-entry-value entry 'location)))
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(concat (guix-package-entry->name-specification entry)
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(when outputs
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(concat ":"
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(guix-concat-strings outputs ",")))
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(when location
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(concat "\t(" location ")")))))))
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specs)))
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(defun guix-insert-package-strings (strings action)
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"Insert information STRINGS at point for performing package ACTION."
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(when strings
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(insert "Package(s) to " (propertize action 'face 'bold) ":\n")
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(mapc (lambda (str)
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(insert " " str "\n"))
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strings)
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(insert "\n")))
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(defun guix-operation-prompt (&optional prompt)
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"Prompt a user for continuing the current operation.
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Return non-nil, if the operation should be continued; nil otherwise.
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Ask a user with PROMPT for continuing an operation."
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(let* ((option-keys (mapcar #'guix-operation-option-key
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guix-operation-options))
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(keys (append '(?y ?n) option-keys))
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(prompt (concat (propertize (or prompt "Continue operation?")
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'face 'minibuffer-prompt)
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" ("
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(mapconcat
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(lambda (key)
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(propertize (string key)
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'face 'guix-operation-option-key))
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keys
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", ")
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") ")))
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(let ((mode-line mode-line-format))
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(prog1 (guix-operation-prompt-1 prompt keys)
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(setq mode-line-format mode-line)
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;; Clear the minibuffer after prompting.
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(message "")))))
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(defun guix-operation-prompt-1 (prompt keys)
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"This function is internal for `guix-operation-prompt'."
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(guix-operation-set-mode-line)
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(let ((key (read-char-choice prompt (cons ?\C-g keys) t)))
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(cl-case key
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(?y t)
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((?n ?\C-g) nil)
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(t (let* ((option (guix-operation-option-by-key key))
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(var (guix-operation-option-variable option)))
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(set var (not (symbol-value var)))
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(guix-operation-prompt-1 prompt keys))))))
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(defun guix-operation-set-mode-line ()
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"Display operation options in the mode-line of the current buffer."
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(setq mode-line-format
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(concat (propertize " Options: "
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'face 'mode-line-buffer-id)
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(mapconcat
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(lambda (option)
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(let ((key (guix-operation-option-key option))
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(name (guix-operation-option-name option))
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(val (guix-operation-option-string-value option)))
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(concat name
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" ("
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(propertize (string key)
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'face 'guix-operation-option-key)
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"): " val)))
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guix-operation-options
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guix-operation-option-separator)))
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(force-mode-line-update))
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(defun guix-delete-generations (profile generations
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&optional operation-buffer)
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"Delete GENERATIONS from PROFILE.
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Each element from GENERATIONS is a generation number."
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(when (or (not guix-operation-confirm)
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(y-or-n-p
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(let ((count (length generations)))
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(if (> count 1)
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(format "Delete %d generations from profile '%s'? "
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count profile)
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(format "Delete generation %d from profile '%s'? "
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(car generations) profile)))))
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(guix-eval-in-repl
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(guix-make-guile-expression
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'delete-generations* profile generations)
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operation-buffer)))
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(defun guix-switch-to-generation (profile generation
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&optional operation-buffer)
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"Switch PROFILE to GENERATION."
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(when (or (not guix-operation-confirm)
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(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-package-source-path (package-id)
|
||
"Return a store file path to a source of a package PACKAGE-ID."
|
||
(message "Calculating the source derivation ...")
|
||
(guix-eval-read
|
||
(guix-make-guile-expression
|
||
'package-source-path package-id)))
|
||
|
||
(defvar guix-after-source-download-hook nil
|
||
"Hook run after successful performing a 'source-download' operation.")
|
||
|
||
(defun guix-package-source-build-derivation (package-id &optional prompt)
|
||
"Build source derivation of a package PACKAGE-ID.
|
||
Ask a user with PROMPT for continuing an operation."
|
||
(when (or (not guix-operation-confirm)
|
||
(guix-operation-prompt (or prompt
|
||
"Build the source derivation?")))
|
||
(guix-eval-in-repl
|
||
(guix-make-guile-expression
|
||
'package-source-build-derivation
|
||
package-id
|
||
:use-substitutes? (or guix-use-substitutes 'f)
|
||
: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* ((current-profile (guix-ui-current-profile))
|
||
(profile (if current-prefix-arg
|
||
(guix-profile-prompt)
|
||
(or current-profile guix-current-profile)))
|
||
(file (read-file-name "File with manifest: "))
|
||
(buffer (and current-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-command
|
||
"package"
|
||
(concat "--profile=" (expand-file-name profile))
|
||
(concat "--manifest=" (expand-file-name file)))
|
||
operation-buffer)))
|
||
|
||
|
||
;;; Executing guix commands
|
||
|
||
(defcustom guix-run-in-shell-function #'guix-run-in-shell
|
||
"Function used to run guix command.
|
||
The function is called with a single argument - a command line string."
|
||
:type '(choice (function-item guix-run-in-shell)
|
||
(function-item guix-run-in-eshell)
|
||
(function :tag "Other function"))
|
||
:group 'guix)
|
||
|
||
(defcustom guix-shell-buffer-name "*shell*"
|
||
"Default name of a shell buffer used for running guix commands."
|
||
:type 'string
|
||
:group 'guix)
|
||
|
||
(declare-function comint-send-input "comint" t)
|
||
|
||
(defun guix-run-in-shell (string)
|
||
"Run command line STRING in `guix-shell-buffer-name' buffer."
|
||
(shell guix-shell-buffer-name)
|
||
(goto-char (point-max))
|
||
(insert string)
|
||
(comint-send-input))
|
||
|
||
(declare-function eshell-send-input "esh-mode" t)
|
||
|
||
(defun guix-run-in-eshell (string)
|
||
"Run command line STRING in eshell buffer."
|
||
(eshell)
|
||
(goto-char (point-max))
|
||
(insert string)
|
||
(eshell-send-input))
|
||
|
||
(defun guix-run-command-in-shell (args)
|
||
"Execute 'guix ARGS ...' command in a shell buffer."
|
||
(funcall guix-run-in-shell-function
|
||
(guix-command-string args)))
|
||
|
||
(defun guix-run-command-in-repl (args)
|
||
"Execute 'guix ARGS ...' command in Guix REPL."
|
||
(guix-eval-in-repl
|
||
(apply #'guix-make-guile-expression
|
||
'guix-command args)))
|
||
|
||
(defun guix-command-output (args)
|
||
"Return string with 'guix ARGS ...' output."
|
||
(cl-multiple-value-bind (output error)
|
||
(guix-eval (apply #'guix-make-guile-expression
|
||
'guix-command-output args))
|
||
;; Remove trailing new space from the error string.
|
||
(message (replace-regexp-in-string "\n\\'" "" (read error)))
|
||
(read output)))
|
||
|
||
(defun guix-help-string (&optional commands)
|
||
"Return string with 'guix COMMANDS ... --help' output."
|
||
(guix-eval-read
|
||
(apply #'guix-make-guile-expression
|
||
'help-string commands)))
|
||
|
||
|
||
;;; Pull
|
||
|
||
(defcustom guix-update-after-pull t
|
||
"If non-nil, update Guix buffers after performing \\[guix-pull]."
|
||
:type 'boolean
|
||
:group 'guix)
|
||
|
||
(defvar guix-after-pull-hook
|
||
'(guix-restart-repl-after-pull guix-update-buffers-maybe-after-pull)
|
||
"Hook run after successful performing `guix-pull' operation.")
|
||
|
||
(defun guix-restart-repl-after-pull ()
|
||
"Restart Guix REPL after `guix-pull' operation."
|
||
(guix-repl-exit)
|
||
(guix-start-process-maybe
|
||
"Restarting Guix REPL after pull operation ..."))
|
||
|
||
(defun guix-update-buffers-maybe-after-pull ()
|
||
"Update buffers depending on `guix-update-after-pull'."
|
||
(when guix-update-after-pull
|
||
(mapc #'guix-ui-update-buffer
|
||
;; No need to update "generation" buffers.
|
||
(guix-ui-buffers '(guix-package-list-mode
|
||
guix-package-info-mode
|
||
guix-output-list-mode
|
||
guix-output-info-mode)))
|
||
(message "Guix buffers have been updated.")))
|
||
|
||
;;;###autoload
|
||
(defun guix-pull (&optional verbose)
|
||
"Run Guix pull operation.
|
||
If VERBOSE is non-nil (with prefix argument), produce verbose output."
|
||
(interactive "P")
|
||
(let ((args (and verbose '("--verbose"))))
|
||
(guix-eval-in-repl
|
||
(apply #'guix-make-guile-expression
|
||
'guix-command "pull" args)
|
||
nil 'pull)))
|
||
|
||
(provide 'guix-base)
|
||
|
||
;;; guix-base.el ends here
|