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-rw-r--r--emacs/guix-info.el130
1 files changed, 125 insertions, 5 deletions
diff --git a/emacs/guix-info.el b/emacs/guix-info.el
index 70ae39c970..cbf8f46ad6 100644
--- a/emacs/guix-info.el
+++ b/emacs/guix-info.el
@@ -1,4 +1,4 @@
-;;; guix-info.el --- Info buffers for displaying entries
+;;; guix-info.el --- Info buffers for displaying entries -*- lexical-binding: t -*-
;; Copyright © 2014 Alex Kost <alezost@gmail.com>
@@ -24,7 +24,6 @@
;;; Code:
-(require 'guix-history)
(require 'guix-base)
(require 'guix-utils)
@@ -107,6 +106,8 @@ number of characters, it will be split into several lines.")
guix-info-insert-title-simple)
(outputs guix-package-info-insert-outputs
guix-info-insert-title-simple)
+ (source guix-package-info-insert-source
+ guix-info-insert-title-simple)
(home-url guix-info-insert-url)
(inputs guix-package-info-insert-inputs)
(native-inputs guix-package-info-insert-native-inputs)
@@ -121,6 +122,8 @@ number of characters, it will be split into several lines.")
(name guix-package-info-name)
(version guix-output-info-insert-version)
(output guix-output-info-insert-output)
+ (source guix-package-info-insert-source
+ guix-info-insert-title-simple)
(path guix-package-info-insert-output-path
guix-info-insert-title-simple)
(dependencies guix-package-info-insert-output-dependencies
@@ -157,10 +160,11 @@ is a function, this function is called with parameter title as
argument.")
(defvar guix-info-displayed-params
- '((package name version synopsis outputs location home-url
+ '((package name version synopsis outputs source location home-url
license inputs native-inputs propagated-inputs description)
- (output name version output synopsis path dependencies location home-url
- license inputs native-inputs propagated-inputs description)
+ (output name version output synopsis source path dependencies location
+ home-url license inputs native-inputs propagated-inputs
+ description)
(installed path dependencies)
(generation number prev-number current time path))
"List of displayed entry parameters.
@@ -652,6 +656,122 @@ ENTRY is an alist with package info."
'guix-package-info-insert-output-path)
+;;; Inserting a source
+
+(defface guix-package-info-source
+ '((t :inherit link :underline nil))
+ "Face used for a source URL of a package."
+ :group 'guix-package-info)
+
+(defcustom guix-package-info-auto-find-source nil
+ "If non-nil, find a source file after pressing a \"Show\" button.
+If nil, just display the source file path without finding."
+ :type 'boolean
+ :group 'guix-package-info)
+
+(defcustom guix-package-info-auto-download-source t
+ "If nil, do not automatically download a source file if it doesn't exist.
+After pressing a \"Show\" button, a derivation of the package
+source is calculated and a store file path is displayed. If this
+variable is non-nil and the source file does not exist in the
+store, it will be automatically downloaded (with a possible
+prompt depending on `guix-operation-confirm' variable)."
+ :type 'boolean
+ :group 'guix-package-info)
+
+(defvar guix-package-info-download-buffer nil
+ "Buffer from which a current download operation was performed.")
+
+(define-button-type 'guix-package-source
+ :supertype 'guix
+ 'face 'guix-package-info-source
+ 'help-echo ""
+ 'action (lambda (_)
+ ;; As a source may not be a real URL (e.g., "mirror://..."),
+ ;; no action is bound to a source button.
+ (message "Yes, this is the source URL. What did you expect?")))
+
+(defun guix-package-info-insert-source-url (url &optional _)
+ "Make button from source URL and insert it at point."
+ (guix-insert-button url 'guix-package-source))
+
+(defun guix-package-info-show-source (entry-id package-id)
+ "Show file name of a package source in the current info buffer.
+Find the file if needed (see `guix-package-info-auto-find-source').
+ENTRY-ID is an ID of the current entry (package or output).
+PACKAGE-ID is an ID of the package which source to show."
+ (let* ((entry (guix-get-entry-by-id entry-id guix-entries))
+ (file (guix-package-source-path package-id)))
+ (or file
+ (error "Couldn't define file path of the package source"))
+ (let* ((new-entry (cons (cons 'source-file file)
+ entry))
+ (entries (cl-substitute-if
+ new-entry
+ (lambda (entry)
+ (equal (guix-get-key-val entry 'id)
+ entry-id))
+ guix-entries
+ :count 1)))
+ (guix-redisplay-buffer :entries entries)
+ (if (file-exists-p file)
+ (if guix-package-info-auto-find-source
+ (guix-find-file file)
+ (message "The source store path is displayed."))
+ (if guix-package-info-auto-download-source
+ (guix-package-info-download-source package-id)
+ (message "The source does not exist in the store."))))))
+
+(defun guix-package-info-download-source (package-id)
+ "Download a source of the package PACKAGE-ID."
+ (setq guix-package-info-download-buffer (current-buffer))
+ (guix-package-source-build-derivation
+ package-id
+ "The source does not exist in the store. Download it?"))
+
+(defun guix-package-info-insert-source (source entry)
+ "Insert SOURCE from package ENTRY at point.
+SOURCE is a list of URLs."
+ (guix-info-insert-indent)
+ (if (null source)
+ (guix-format-insert nil)
+ (let* ((source-file (guix-get-key-val entry 'source-file))
+ (entry-id (guix-get-key-val entry 'id))
+ (package-id (or (guix-get-key-val entry 'package-id)
+ entry-id)))
+ (if (null source-file)
+ (guix-info-insert-action-button
+ "Show"
+ (lambda (btn)
+ (guix-package-info-show-source (button-get btn 'entry-id)
+ (button-get btn 'package-id)))
+ "Show the source store path of the current package"
+ 'entry-id entry-id
+ 'package-id package-id)
+ (unless (file-exists-p source-file)
+ (guix-info-insert-action-button
+ "Download"
+ (lambda (btn)
+ (guix-package-info-download-source
+ (button-get btn 'package-id)))
+ "Download the source into the store"
+ 'package-id package-id))
+ (guix-info-insert-val-simple source-file
+ #'guix-info-insert-file-path))
+ (guix-info-insert-val-simple source
+ #'guix-package-info-insert-source-url))))
+
+(defun guix-package-info-redisplay-after-download ()
+ "Redisplay an 'info' buffer after downloading the package source.
+This function is used to hide a \"Download\" button if needed."
+ (when (buffer-live-p guix-package-info-download-buffer)
+ (guix-redisplay-buffer :buffer guix-package-info-download-buffer)
+ (setq guix-package-info-download-buffer nil)))
+
+(add-hook 'guix-after-source-download-hook
+ 'guix-package-info-redisplay-after-download)
+
+
;;; Displaying outputs
(guix-define-buffer-type info output