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helm-system-packages-guix.el
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helm-system-packages-guix.el
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;;; helm-system-packages-guix.el --- Helm UI for Guix. -*- lexical-binding: t -*-
;; Copyright (C) 2012 ~ 2014 Thierry Volpiatto <[email protected]>
;; 2017 ~ 2018, 2020 Pierre Neidhardt <[email protected]>
;; Author: Pierre Neidhardt <[email protected]>
;; URL: https://github.com/emacs-helm/helm-system-packages
;; Version: 1.10.1
;; Package-Requires: ((emacs "25") (helm "2.8.6"))
;; Keywords: helm, guix, packages
;; This program 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.
;; This program 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:
;; Helm UI for Guix.
;;; Code:
(require 'helm-system-packages)
;; Shut up byte compiler
(defvar eshell-buffer-name)
(declare-function eshell-interactive-process "esh-cmd.el")
(declare-function eshell-send-input "esh-mode.el")
;; TODO: Add support for superseded and obsolete packages.
;; TODO: Add support for multiple outputs (install, uninstall, listing...).
;; TODO: Add support for multiple versions.
(defvar helm-system-packages-guix-help-message
"* Helm guix
Requirements:
** Commands
\\<helm-system-packages-guix-map>
\\[helm-system-packages-guix-toggle-explicit]\t\tToggle display of explicitly installed packages.
\\[helm-system-packages-guix-toggle-uninstalled]\t\tToggle display of non-installed.
\\[helm-system-packages-toggle-descriptions]\t\tToggle display of package descriptions.")
(defvar helm-system-packages-guix-map
;; M-U is reserved for `helm-unmark-all'.
(let ((map (make-sparse-keymap)))
(set-keymap-parent map helm-map)
(define-key map (kbd "M-I") 'helm-system-packages-guix-toggle-explicit)
(define-key map (kbd "M-N") 'helm-system-packages-guix-toggle-uninstalled)
(define-key map (kbd "C-]") 'helm-system-packages-toggle-descriptions)
map))
(defvar helm-system-packages-guix--show-uninstalled-p t)
(defvar helm-system-packages-guix--show-explicit-p t)
(defun helm-system-packages-guix-toggle-explicit ()
(interactive)
(with-helm-alive-p
(setq helm-system-packages-guix--show-explicit-p
(not helm-system-packages-guix--show-explicit-p))
(helm-update)))
(put 'helm-system-packages-guix-toggle-explicit 'helm-only t)
(defun helm-system-packages-guix-toggle-uninstalled ()
(interactive)
(with-helm-alive-p
(setq helm-system-packages-guix--show-uninstalled-p
(not helm-system-packages-guix--show-uninstalled-p))
(helm-update)))
(put 'helm-system-packages-guix-toggle-uninstalled 'helm-only t)
(defun helm-system-packages-guix-transformer (packages)
(let (res (pkglist (reverse packages)))
(dolist (p pkglist res)
(let ((face (cdr (assoc (helm-system-packages-extract-name p)
(plist-get (helm-system-packages--cache-get) :display)))))
(cond
((not face)
(when helm-system-packages-guix--show-uninstalled-p
(push p res)))
((and helm-system-packages-guix--show-explicit-p
(memq 'helm-system-packages-explicit face))
(push (propertize p 'face (car face)) res)))))))
(defun helm-system-packages-guix-list-explicit ()
"List explicitly installed packages."
(split-string
(with-temp-buffer
(process-file-shell-command "guix package --list-installed | cut -f1" nil t)
(sort-lines nil (point-min) (point-max))
(buffer-string))))
(defun helm-system-packages-guix-el->scheme-syntax (form)
;; Escape symbols are printed as \\NAME while they should be printed as NAME.
(replace-regexp-in-string "\\\\" "" (format "%S" form)))
(cl-defun helm-system-packages-guix-eval (form &rest more-forms)
"Evaluate forms in Guix REPL.
Return the REPL output (including the error output) as a string."
(let ((temp-file))
(unwind-protect
(progn
(setq temp-file (make-temp-file "helm-system-packages-guix"))
(with-temp-buffer
(dolist (f (cons form more-forms))
(insert (replace-regexp-in-string
;; Backslashes in Common Lisp are doubled, unlike Guile.
"\\\\" "\\"
(helm-system-packages-guix-el->scheme-syntax f))))
(write-region (point-min) (point-max) temp-file))
(with-output-to-string
(with-current-buffer standard-output
(process-file "guix" nil '(t t) nil "repl" temp-file))))
(delete-file temp-file))))
(defvar helm-system-packages-guix-cache-file
(expand-file-name "helm-system-packages-guix" user-emacs-directory)
"Filename of the cache storing all Guix package descriptions.")
(defvar helm-system-packages-guix-path
(expand-file-name "current" "~/.config/guix")
"Path to the latest guix checkout.")
(make-obsolete-variable 'helm-system-packages-guix-path nil "1.10.2")
(defun helm-system-packages-guix--last-pull-commits ()
"Return the commits of the Guix channels from the last generation."
(with-temp-buffer
(let ((output (current-buffer)))
(with-temp-buffer
(process-file "guix" nil '(t nil) nil "describe" "--format=recutils")
(call-process-region (point-min) (point-max) "recsel" nil output nil "-R" "url,commit")))
(sort-lines nil (point-min) (point-max))
(goto-char (point-min))
(delete-blank-lines)
(delete-blank-lines)
(buffer-string)))
(defun helm-system-packages-guix-file-get (basename suffix)
"Return Guix local file BASENAME, with SUFFIX appended.
If `default-directory' is a remote file (over TRAMP), a different
cache filename is returned with the host name appended to it."
(concat basename
(when (tramp-tramp-file-p default-directory)
(concat "_" (tramp-file-name-host
(tramp-dissect-file-name default-directory))))
suffix))
(defun helm-system-packages-guix-cache-file-get ()
"Return Guix local or remote cache."
(helm-system-packages-guix-file-get helm-system-packages-guix-cache-file ".cache"))
(defun helm-system-packages-guix-commit-file-get ()
"Return Guix local or remote cache of commits."
(helm-system-packages-guix-file-get helm-system-packages-guix-cache-file ".commits"))
(defun helm-system-packages-generate-database ()
(helm-system-packages-guix-eval
'(use-modules
(guix packages)
(guix licenses)
(guix utils)
(guix build utils) ; For `string-replace-substring'.
(gnu packages))
'(define (ensure-list l)
(if (list? l)
l
(list l)))
'(format '\#t "(~&")
'(fold-packages
(lambda (package count)
(let ((location (package-location package)))
(format '\#t "(~s ~s)~&"
(package-name package)
(package-synopsis package)))
(+ 1 count))
1)
'(format '\#t "~&)~&")))
(defvar helm-system-packages-guix--database nil)
(defun helm-system-packages-guix-cache (display-list)
"Cache all package names with descriptions. "
;; We build both caches at the same time. We could also build just-in-time, but
;; benchmarks show that it only saves less than 20% when building one cache.
(let* (names
descriptions)
(unless helm-system-packages-guix--database
(message "Building package database...")
(setq helm-system-packages-guix--database
(cl-sort (read (helm-system-packages-generate-database))
#'string<
:key #'car)))
(setq descriptions
(mapconcat (lambda (name+desc)
(format "%s%s%s"
(car name+desc)
(make-string (max (- helm-system-packages-column-width
(length (car name+desc)))
1)
? )
(cadr name+desc)))
helm-system-packages-guix--database
"\n"))
;; replace-regexp-in-string is faster than mapconcat over split-string.
(setq names
(replace-regexp-in-string " .*" "" descriptions))
(helm-system-packages--cache-set names descriptions display-list "guix")))
(defun helm-system-packages-guix-refresh ()
"Refresh the list of installed packages."
(interactive)
(let* ((explicit (helm-system-packages-guix-list-explicit))
display-list)
(dolist (p explicit)
(push (cons p '(helm-system-packages-explicit)) display-list))
(helm-system-packages-guix-cache display-list)))
(defun helm-system-packages-guix-info (candidate)
"Print information about the selected packages.
With prefix argument, insert the output at point.
Otherwise display in `helm-system-packages-buffer'."
(helm-system-packages-show-information
`((uninstalled . ,(mapcar (lambda (pkg-desc)
(let (name desc)
(with-temp-buffer
(insert pkg-desc)
(goto-char (point-min))
(search-forward ":" nil t)
(setq name (buffer-substring-no-properties (point) (line-end-position)))
(forward-line)
(setq desc (buffer-substring-no-properties (point) (point-max)))
(cons name desc))))
(split-string
(helm-system-packages-call
"recsel" nil "-e"
(mapconcat (lambda (s) (format "name = '%s'" s))
(if helm-in-persistent-action
(list candidate)
(helm-marked-candidates))
"||")
(helm-system-packages-guix-cache-file-get))
"\n\n"))))))
(defun helm-system-packages-guix-run (command args packages)
"Call COMMAND ARGS PACKAGES as current user (sudo is not used).
ARGS and PACKAGES must be lists.
COMMAND will be run in the Eshell buffer named by `helm-system-packages-shell-name'."
(require 'esh-mode)
(if (not packages)
(message "No suitable package selected")
(let ((arg-list (append args packages))
(eshell-buffer-name (helm-system-packages-shell-name)))
;; Refresh package list after command has completed.
(eshell)
(if (eshell-interactive-process)
(message "A process is already running")
(push command arg-list)
(add-hook 'eshell-post-command-hook 'helm-system-packages-guix-refresh nil t)
(add-hook 'eshell-post-command-hook
(lambda () (remove-hook 'eshell-post-command-hook 'helm-system-packages-guix-refresh t))
t t)
(goto-char (point-max))
(insert (mapconcat 'identity arg-list " "))
(when helm-system-packages-auto-send-commandline-p
(eshell-send-input))))))
(defun helm-system-packages-guix-install (_)
"Install marked candidates."
(helm-system-packages-guix-run
"guix" '("package" "--install")
(helm-marked-candidates)))
(defun helm-system-packages-guix-uninstall (_)
"Install marked candidates."
(helm-system-packages-guix-run
"guix" '("package" "--remove")
(helm-marked-candidates)))
(defun helm-system-packages-guix-browse-url (_)
"Print homepage URLs of `helm-marked-candidates'.
With prefix argument, insert the output at point.
Otherwise display in `helm-system-packages-buffer'."
(helm-system-packages-browse-url
(split-string
(helm-system-packages-call
"recsel" nil "-R" "homepage" "-e"
(mapconcat (lambda (s) (format "name = '%s'" s))
(helm-marked-candidates)
"||")
(helm-system-packages-guix-cache-file-get))
"\n" t)))
(defun helm-system-packages-guix-find-files (_)
"Find files for marked candidates."
(helm-system-packages-find-files
(let* ((file-hash (make-hash-table :test 'equal))
(package-hash (make-hash-table :test 'equal)))
(dolist (s (split-string
(helm-system-packages-call "guix" nil "package" "--list-installed")
"\n" t))
(let ((l (split-string s "\t")))
(push (nth 3 l) (gethash (car l) package-hash))))
(dolist (pkg (helm-marked-candidates) file-hash)
(let ((h (gethash pkg package-hash)))
(when h
(setf (gethash pkg file-hash) (directory-files-recursively (car h) "."))))))))
(defun helm-system-packages-guix-show-dependencies (_candidate)
"List candidate dependencies for `helm-system-packages-show-packages'. "
(let ((title (concat
"Dependencies of "
(mapconcat 'identity (helm-marked-candidates) " "))))
(helm-system-packages-show-packages
`((uninstalled . ,(replace-regexp-in-string
"@[^@]+\n" "\n"
(replace-regexp-in-string
" " "\n"
(helm-system-packages-call
"recsel" nil "-R" "dependencies" "-e"
(mapconcat (lambda (s) (format "name = '%s'" s))
(helm-marked-candidates)
"||")
(helm-system-packages-guix-cache-file-get))))))
title)))
(defun helm-system-packages-guix-show-reverse-dependencies (_candidate)
"List candidate reverse dependencies for `helm-system-packages-show-packages'. "
(let ((title (concat
"Reverse dependencies of "
(mapconcat 'identity (helm-marked-candidates) " "))))
(helm-system-packages-show-packages
`((uninstalled . ,(with-temp-buffer
(insert
(replace-regexp-in-string
" " "\n"
(replace-regexp-in-string
"@[^ ]+" ""
(replace-regexp-in-string
".*: " ""
(helm-system-packages-call
"guix" (helm-marked-candidates) "refresh" "--list-dependent")))))
(sort-lines nil (point-min) (point-max))
(buffer-string))))
title)))
(defcustom helm-system-packages-guix-actions
'(("Show package(s)" . helm-system-packages-guix-info)
("Install" . helm-system-packages-guix-install)
("Uninstall" . helm-system-packages-guix-uninstall)
("Browse homepage URL" . helm-system-packages-guix-browse-url)
("Find files" . helm-system-packages-guix-find-files)
("Show dependencies" . helm-system-packages-guix-show-dependencies)
("Show reverse dependencies" . helm-system-packages-guix-show-reverse-dependencies))
"Actions for Helm guix."
:group 'helm-system-packages
:type '(alist :key-type string :value-type function))
(defvar helm-system-packages-guix
(helm-system-packages-manager-create
:name "guix"
:refresh-function #'helm-system-packages-guix-refresh
:dependencies '("guix" "recsel")
:help-message 'helm-system-packages-guix-help-message
:keymap helm-system-packages-guix-map
:transformer #'helm-system-packages-guix-transformer
:actions helm-system-packages-guix-actions))
(provide 'helm-system-packages-guix)
;;; helm-system-packages-guix.el ends here