gnu: notmuch-addrlookup-c: Update to 8-1.88f156d.

* gnu/packages/mail.scm (notmuch-addrlookup-c): Update to 8-1.88f156d.
[source]: Use git-fetch.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/mail.scm

@@ -727,18 +727,24 @@ ing, and tagging large collections of email messages.")
     (license gpl3+)))
 
 (define-public notmuch-addrlookup-c
+  ;; This commit includes a compatibility fix for notmuch-0.25, and is not
+  ;; currently part of any release.  Please update this package when
+  ;; notmuch-addrlookup-c-9 is released.
+  (let ((commit "88f156d04990a71c6ad6fc2757b537b44e3c4d00")
+        (revision "1"))          ;Guix package revision
     (package
       (name "notmuch-addrlookup-c")
-    (version "7")
+      (version (string-append "8-" revision "."
+                              (string-take commit 7)))
       (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://github.com/aperezdc/" name "/archive/v"
-                    version ".tar.gz"))
-              (file-name (string-append name "-" version ".tar.gz"))
+                (method git-fetch)
+                (uri (git-reference
+                      (url "https://github.com/aperezdc/notmuch-addrlookup-c.git")
+                      (commit commit)))
+                (file-name (string-append name "-" version "-checkout"))
                 (sha256
                  (base32
-                "0rslg2ifgyhl6asv3yr1f62m9xjfcinv7i6qb07h2k217jqlmrri"))))
+                  "0v0wzs7qzy4n1hbql8s10qrwgalcxdzbxf8pj6cii1pv2jwmkxbm"))))
       (build-system gnu-build-system)
       (arguments
        '(#:tests? #f ; no tests
@@ -765,7 +771,7 @@ ing, and tagging large collections of email messages.")
       (synopsis "Address lookup tool for Notmuch")
       (description "This is an address lookup tool using a Notmuch database,
 useful for email address completion.")
-    (license license:expat)))
+      (license license:expat))))
 
 (define-public python-notmuch
   (package