gnu: gpscorrelate: Update to 2.0.

* gnu/packages/gps.scm (gpscorrelate): Update to 2.0.
[arguments]: Remove #:tests?.
[inputs]: Remove GTK+-2.  Add GTK+.

gnu/packages/gps.scm

@@ -5,6 +5,7 @@
 ;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@gmail.com>
 ;;; Copyright © 2020 Guillaume Le Vaillant <glv@posteo.net>
 ;;; Copyright © 2020 Vincent Legoll <vincent.legoll@gmail.com>
+;;; Copyright © 2020 Marius Bakke <marius@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -104,21 +105,18 @@ manipulate maps.")
                    license:gpl2+))))    ; everything else
 
 (define-public gpscorrelate
-  ;; This program is "lightly maintained", so to speak, so we end up taking it
-  ;; directly from its Git repo.
-  (let ((commit "365f6e1b3f"))
   (package
     (name "gpscorrelate")
-      (version (string-append "1.6.1." commit))
+    (version "2.0")
     (source (origin
               (method git-fetch)
               (uri (git-reference
                     (url "https://github.com/dfandrich/gpscorrelate")
-                      (commit commit)))
+                    (commit version)))
               (file-name (git-file-name name version))
               (sha256
                (base32
-                  "006a6l8p38a4h7y2959sqrmjjn29d8pd50zj9nypcp5ph18nybjb"))))
+                "1kvybhfnygz79q3pgwc1q2x4ccmnsfscx2hzxnmzjbnc6arnqari"))))
     (build-system gnu-build-system)
     (arguments
      `(#:phases
@@ -130,10 +128,9 @@ manipulate maps.")
                (("prefix[[:blank:]]*=.*$")
                 (string-append "prefix = " (assoc-ref outputs "out")
                                "\n")))
-               #t)))
-         #:tests? #f))
+             #t)))))
     (inputs
-       `(("gtk+" ,gtk+-2)
+     `(("gtk+" ,gtk+)
        ("libxml2" ,libxml2)
        ("exiv2" ,exiv2)))
     (native-inputs
@@ -149,7 +146,7 @@ tags in digital camera photos, and update the EXIF tags with the location that
 the photo was taken.  It does this by using the timestamp in the photo and
 finding a data point in the GPS track that matches, or interpolating a point
 between two other data points.")
-      (license license:gpl2+))))
+    (license license:gpl2+)))
 
 (define-public gama
   (package