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emacs: Handle updating by ID after REPL restart.

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* emacs/guix-base.el (guix-entry-to-specification,
  guix-entries-to-specifications): New procedures.
  (guix-revert-buffer): Search by name if searching by ID gives no results.
This commit is contained in:
Alex Kost 2014-10-20 16:07:38 +04:00
parent 8a96bd4bb0
commit d2b299a91f
1 changed files with 34 additions and 6 deletions
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40
emacs/guix-base.el
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@ -142,6 +142,17 @@ Each element of the list has a form:
(guix-get-key-val entry 'version)
output))
(defun guix-entry-to-specification (entry)
"Return name specification by the package or output ENTRY."
(guix-get-name-spec (guix-get-key-val entry 'name)
(guix-get-key-val entry 'version)
(guix-get-key-val entry 'output)))
(defun guix-entries-to-specifications (entries)
"Return name specifications by the package or output ENTRIES."
(cl-remove-duplicates (mapcar #'guix-entry-to-specification entries)
:test #'string=))
(defun guix-get-installed-outputs (entry)
"Return list of installed outputs for the package ENTRY."
(mapcar (lambda (installed-entry)
@ -591,13 +602,30 @@ See `revert-buffer' for the meaning of NOCONFIRM."
(guix-get-symbol "revert-no-confirm"
guix-buffer-type guix-entry-type))
(y-or-n-p "Update current information? "))
(let ((entries (guix-get-entries
guix-profile guix-entry-type
guix-search-type guix-search-vals
(guix-get-params-for-receiving guix-buffer-type
guix-entry-type))))
(let* ((search-type guix-search-type)
(search-vals guix-search-vals)
(params (guix-get-params-for-receiving guix-buffer-type
guix-entry-type))
(entries (guix-get-entries
guix-profile guix-entry-type
guix-search-type guix-search-vals params))
;; If a REPL was restarted, package/output IDs are not actual
;; anymore, because 'object-address'-es died with the REPL, so if a
;; search by ID didn't give results, search again by name.
(entries (if (and (null entries)
(eq guix-search-type 'id)
(or (eq guix-entry-type 'package)
(eq guix-entry-type 'output)))
(progn
(setq search-type 'name
search-vals (guix-entries-to-specifications
guix-entries))
(guix-get-entries
guix-profile guix-entry-type
search-type search-vals params))
entries)))
(guix-set-buffer guix-profile entries guix-buffer-type guix-entry-type
guix-search-type guix-search-vals t t))))
search-type search-vals t t))))
(defun guix-redisplay-buffer ()
"Redisplay current information.