gnu: fish: Update to 2.5.0.

* gnu/packages/shells.scm (fish): Update to 2.5.0.
[native-inputs]: Add autoconf, automake, and libtool.
[arguments]: Add ‘bootstrap’ phase.

gnu/packages/shells.scm

@@ -83,14 +83,14 @@ direct descendant of NetBSD's Almquist Shell (@command{ash}).")
 (define-public fish
   (package
     (name "fish")
-    (version "2.4.0")
+    (version "2.5.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://fishshell.com/files/"
                                   version "/fish-" version ".tar.gz"))
               (sha256
                (base32
-                "1iggr6ah0siyak073v2w4sx1man19q8jsxns8i09qhv06crb5fq6"))
+                "0kn2n9qr9cksg2cl78f3w0yd24368d35djhi6w5x3gbdxk23ywq3"))
               (modules '((guix build utils)))
               ;; Don't try to install /etc/fish/config.fish.
               (snippet
@@ -98,7 +98,12 @@ direct descendant of NetBSD's Almquist Shell (@command{ash}).")
                   ((".*INSTALL.*sysconfdir.*fish.*") "")))))
     (build-system gnu-build-system)
     (native-inputs
-     `(("doxygen" ,doxygen)))
+     `(("doxygen" ,doxygen)
+       ;; XXX These are needed to bootstrap the 2.5.0 tarball, and can probably
+       ;; be removed along with the ‘bootstrap’ phase on the next update.
+       ("autoconf" ,autoconf)
+       ("automake" ,automake)
+       ("libtool" ,libtool)))
     (inputs
      `(("bc" ,bc)
        ("ncurses" ,ncurses)
@@ -119,7 +124,10 @@ direct descendant of NetBSD's Almquist Shell (@command{ash}).")
                                "/bin/bc")))
              (substitute* "share/functions/fish_update_completions.fish"
                (("python") (which "python")))
-             #t)))))
+             #t))
+         (add-before 'configure 'bootstrap
+           (lambda _
+             (zero? (system* "autoreconf" "-vfi")))))))
     (synopsis "The friendly interactive shell")
     (description
      "Fish (friendly interactive shell) is a shell focused on interactive use,