gnu: Add gpredict.

* gnu/packages/astronomy.scm (gpredict): New variable.

gnu/packages/astronomy.scm

@@ -4,6 +4,7 @@
 ;;; Copyright © 2018, 2019 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2019 by Amar Singh <nly@disroot.org>
 ;;; Copyright © 2020 R Veera Kumar <vkor@vkten.in>
+;;; Copyright © 2020 Guillaume Le Vaillant <glv@posteo.net>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -28,6 +29,8 @@ (define-module (gnu packages astronomy)
   #:use-module (guix utils)
   #:use-module (gnu packages)
   #:use-module (gnu packages autotools)
+  #:use-module (gnu packages curl)
+  #:use-module (gnu packages glib)
   #:use-module (gnu packages image)
   #:use-module (gnu packages compression)
   #:use-module (gnu packages fontutils)
@@ -344,3 +347,45 @@ (define-public xplanet
 projections are also supported, including azimuthal, hemisphere, Lambert,
 Mercator, Mollweide, Peters, polyconic, orthographic and rectangular.")
     (license license:gpl2+)))
+
+(define-public gpredict
+  (package
+    (name "gpredict")
+    (version "2.2.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://github.com/csete/gpredict/releases"
+                           "/download/v" version
+                           "/gpredict-" version ".tar.bz2"))
+       (sha256
+        (base32 "0hwf97kng1zy8rxyglw04x89p0bg07zq30hgghm20yxiw2xc8ng7"))))
+    (build-system gnu-build-system)
+    (native-inputs
+     `(("intltool" ,intltool)
+       ("gettext" ,gettext-minimal)
+       ("pkg-config" ,pkg-config)))
+    (inputs
+     `(("curl" ,curl)
+       ("glib" ,glib)
+       ("goocanvas" ,goocanvas)
+       ("gtk+" ,gtk+)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'fix-tests
+           (lambda _
+             ;; Remove reference to non-existent file.
+             (substitute* "po/POTFILES.in"
+               (("src/gtk-sat-tree\\.c")
+                ""))
+             #t)))))
+    (synopsis "Satellite tracking and orbit prediction application")
+    (description
+     "Gpredict is a real-time satellite tracking and orbit prediction
+application.  It can track a large number of satellites and display their
+position and other data in lists, tables, maps, and polar plots (radar view).
+Gpredict can also predict the time of future passes for a satellite, and
+provide you with detailed information about each pass.")
+    (home-page "http://gpredict.oz9aec.net/index.php")
+    (license license:gpl2+)))