gnu: parted: Use G-expressions & new input style.

* gnu/packages/disk.scm (parted)
[arguments]: Rewrite as G-expressions.
[native-inputs]: Remove input labels.

gnu/packages/disk.scm

@@ -246,26 +246,25 @@ (define-public parted
                 "18h51i3x5cbqhlj5rm23m9sfw63gaaby5czln5w6qpqj3ifdsf29"))))
     (build-system gnu-build-system)
     (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'fix-locales-and-python
-           (lambda* (#:key inputs #:allow-other-keys)
-             (substitute* "tests/t0251-gpt-unicode.sh"
-               (("C.UTF-8") "en_US.utf8")) ;not in Glibc locales
-             (substitute* "tests/msdos-overlap"
-               (("/usr/bin/python") (which "python")))
-             #t)))))
+     (list #:phases
+       #~(modify-phases %standard-phases
+           (add-after 'unpack 'fix-locales-and-python
+             (lambda _
+               (substitute* "tests/t0251-gpt-unicode.sh"
+                 (("C.UTF-8") "en_US.utf8")) ;not in Glibc locales
+               (substitute* "tests/msdos-overlap"
+                 (("/usr/bin/python") (which "python"))))))))
     (inputs
      (list lvm2 readline
            `(,util-linux "lib")))
     (native-inputs
-     `(("gettext" ,gettext-minimal)
+     (list gettext-minimal
 
-       ;; For the tests.
-       ("e2fsprogs" ,e2fsprogs)
-       ("perl" ,perl)
-       ("python-wrapper" ,python-wrapper)
-       ("util-linux" ,util-linux)))
+           ;; For the tests.
+           e2fsprogs
+           perl
+           python-wrapper
+           util-linux))
     (home-page "https://www.gnu.org/software/parted/")
     (synopsis "Disk partition editor")
     (description