(define-module (vign packages emacs-master)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages emacs)
  #:use-module (gnu packages web)
  #:use-module (guix git)
  #:use-module (guix packages)
  #:use-module (guix utils))

(define-public emacs-master
  (package (inherit emacs)
    (name "emacs-master")
    (version "master")
    (source (git-checkout (url "https://git.savannah.gnu.org/git/emacs.git")
                          (recursive? #t)))
    (arguments
      (substitute-keyword-arguments (package-arguments emacs)
        ((#:phases phases)
         `(modify-phases ,phases
            (add-before 'reset-gzip-timestamps 'make-compressed-files-writable
              (lambda _
                (for-each make-file-writable
                          (find-files %output ".*\\.t?gz$"))
                #t))))))
    (inputs
      `(("jansson" ,jansson)
        ("autoconf" ,autoconf)
        ,@(package-inputs emacs)))))