Build tarballs with deterministic file ordering.

* guix/packages.scm (patch-and-repack)[build],
  gnu/system/install.scm (self-contained-tarball)[build],
  gnu/packages/make-bootstrap.scm (tarball-package),
  gnu/packages/admin.scm (isc-dhcp),
  gnu/packages/video.scm (avidemux): Pass "--sort=name" to 'tar'.

gnu/packages/admin.scm

@@ -428,6 +428,7 @@ connection alive.")
                      (zero? (system* "tar" "cf" "bind.tar.gz"
                                      "bind-9.9.5-P1"
                                      ;; avoid non-determinism in the archive
+                                     "--sort=name"
                                      "--mtime=@0"
                                      "--owner=root:0"
                                      "--group=root:0"))))

gnu/packages/make-bootstrap.scm

@@ -629,7 +629,8 @@ for `sh' in $PATH, and without nscd, and with static NSS modules."
                                               ".tar.xz")
                                "."
                                ;; avoid non-determinism in the archive
-                               "--mtime=@0" "--owner=root:0" "--group=root:0"))))))))))
+                               "--sort=name" "--mtime=@0"
+                               "--owner=root:0" "--group=root:0"))))))))))
 
 (define %bootstrap-binaries-tarball
   ;; A tarball with the statically-linked bootstrap binaries.

gnu/packages/video.scm

@@ -1015,7 +1015,8 @@ for use with HTML5 video.")
                (("#! /bin/sh") (string-append "#!" (which "bash"))))
              (system* "tar" "cjf" "ffmpeg-2.6.1.tar.bz2" "ffmpeg-2.6.1"
                       ;; avoid non-determinism in the archive
-                      "--mtime=@0" "--owner=root:0" "--group=root:0")
+                      "--sort=name" "--mtime=@0"
+                      "--owner=root:0" "--group=root:0")
              (delete-file-recursively "ffmpeg-2.6.1")))
          (alist-replace 'configure
           (lambda _

gnu/system/install.scm

@@ -74,8 +74,13 @@ under /root/.guix-profile where GUIX is installed."
           ;; length limitation.
           (with-directory-excursion %root
             (zero? (system* "tar" "--xz" "--format=gnu"
-                            "--owner=root:0" "--group=root:0"
+
+                            ;; avoid non-determinism in the archive
+                            "--sort=name"
                             "--mtime=@0"          ;for files in /var/guix
+                            "--owner=root:0"
+                            "--group=root:0"
+
                             "--check-links"
                             "-cvf" #$output
                             ;; Avoid adding / and /var to the tarball,

guix/packages.scm

@@ -482,6 +482,7 @@ IMPORTED-MODULES specify modules to use/import for use by SNIPPET."
                       (zero? (system* (string-append #+tar "/bin/tar")
                                       "cvfa" #$output directory
                                       ;; avoid non-determinism in the archive
+                                      "--sort=name"
                                       "--mtime=@0"
                                       "--owner=root:0"
                                       "--group=root:0")))))))