gnu: orpheus: Use 'modify-phases'.

* gnu/packages/orpheus.scm (orpheus)[arguments]: Use the 'modify-phases'
syntax.

gnu/packages/orpheus.scm

@@ -53,8 +53,8 @@
        ("which" ,which)))
     (arguments
      `(#:phases
-       (alist-replace
-        'configure
+       (modify-phases %standard-phases
+         (replace 'configure
            (lambda* (#:key outputs #:allow-other-keys)
              ;; This old `configure' script does not support variables passed as
              ;; arguments.
@@ -68,9 +68,8 @@
                                                        (%current-system))
                                              '("--host=mips64el-unknown-linux-gnu")
                                              '())
-                      ))))
-        (alist-cons-after
-         'configure 'configure-players
+                         )))))
+         (add-after 'configure 'configure-players
            (lambda* (#:key inputs #:allow-other-keys)
              ;; To avoid propagating the mpg321 and vorbis-tools inputs, we can
              ;; make the orpheus application execute the needed players from the
@@ -84,15 +83,15 @@
                (substitute* "src/orpheusconf.cc"
                  (("ogg123") ogg123)
                  (("which")  which)
-               (("mpg321") mpg321))))
-         (alist-cons-before
-          'build 'patch-shells
+                 (("mpg321") mpg321))
+               #t)))
+         (add-before 'build 'patch-shells
            (lambda _
              (substitute* '("src/mp3track.cc"
                             "src/streamtrack.cc"
                             "src/oggtrack.cc")
-              (("/bin/sh") (which "bash"))))
-          %standard-phases)))))
+               (("/bin/sh") (which "bash")))
+             #t)))))
     (home-page "http://thekonst.net/en/orpheus")
     (synopsis "Text-mode audio player")
     (description