gnu: libelf: Use 'modify-phases'.

* gnu/packages/elf.scm (libelf)[arguments]: Use 'modify-phases'.

gnu/packages/elf.scm

@@ -79,8 +79,10 @@ addr2line, and more.")
               (base32
                "0vf7s9dwk2xkmhb79aigqm0x0yfbw1j0b9ksm51207qwr179n6jr"))))
     (build-system gnu-build-system)
-    (arguments `(#:phases (alist-replace
-                           'configure
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (replace 'configure
            (lambda* (#:key outputs #:allow-other-keys)
              ;; This old `configure' script doesn't support
              ;; variables passed as arguments.
@@ -92,9 +94,7 @@ addr2line, and more.")
                        ,@(if (string=? "aarch64-linux"
                                        (%current-system))
                              '("--host=aarch64-unknown-linux-gnu")
-                                             '())
-                         ))))
-                           %standard-phases)))
+                             '())))))))))
     (home-page "http://www.mr511.de/software/english.html")
     (synopsis "ELF object file access library")
     (description "Libelf is a C library to access ELF object files.")