gnu: Add disarchive.

* gnu/packages/backup.scm (disarchive): New variable.

gnu/packages/backup.scm

@@ -18,6 +18,7 @@
 ;;; Copyright © 2020 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 ;;; Copyright © 2020 Marcin Karpezo <sirmacik@wioo.waw.pl>
 ;;; Copyright © 2020 Michael Rohleder <mike@rohleder.de>
+;;; Copyright © 2021 Timothy Sample <samplet@ngyro.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -62,6 +63,7 @@
   #:use-module (gnu packages golang)
   #:use-module (gnu packages gperf)
   #:use-module (gnu packages guile)
+  #:use-module (gnu packages guile-xyz)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages mcrypt)
   #:use-module (gnu packages ncurses)
@@ -1083,3 +1085,35 @@ interactive mode.")
 to reduce network traffic and the amount of space that is used by each
 backup.")
     (license license:agpl3)))
+
+(define-public disarchive
+  (package
+    (name "disarchive")
+    (version "0.2.0")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://files.ngyro.com/disarchive/"
+                                  "disarchive-" version ".tar.gz"))
+              (sha256
+               (base32
+                "12d4r4i7vi8fxilr2aww6kzq56jax5ymhjfm3cpgx26vj4c70kb6"))))
+    (build-system gnu-build-system)
+    (native-inputs
+     `(("autoconf" ,autoconf)
+       ("automake" ,automake)
+       ("pkg-config" ,pkg-config)
+       ("guile-quickcheck" ,guile-quickcheck)))
+    (inputs
+     `(("guile" ,guile-3.0)
+       ("zlib" ,zlib)))
+    (propagated-inputs
+     `(("guile-gcrypt" ,guile-gcrypt)))
+    (home-page "https://ngyro.com/software/disarchive.html")
+    (synopsis "Software archive disassembler")
+    (description "Disarchive can disassemble software archives into data
+and metadata.  The goal is to create a small amount of metadata that
+can be used to recreate a software archive bit-for-bit from the
+original files.  For example, a software archive made using tar and
+Gzip will need to describe the order of files in the tarball and the
+compression parameters used by Gzip.")
+    (license license:gpl3+)))