gnu: python2-notmuch: Update to 0.22.1.

* gnu/packages/mail.scm (python2-notmuch): Update to 0.22.1 by
inheriting from 'python-notmuch'.

Signed-off-by: Alex Kost <alezost@gmail.com>

gnu/packages/mail.scm

@@ -553,38 +553,7 @@ and search library.")
     (license gpl3+)))
 
 (define-public python2-notmuch
-  (package
+  (package-with-python2 python-notmuch))
-    (name "python2-notmuch")
-    (version "0.15.2")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://pypi.python.org/packages/source/n/notmuch/notmuch-"
-                    version
-                    ".tar.gz"))
-              (sha256
-               (base32
-                "18g8701ibr153ngsz258kgcd42wqnbf9ifpqig1bijy6b0zx9xn5"))))
-    (build-system python-build-system)
-    (inputs `(("notmuch" ,notmuch)))
-    (arguments
-     `(#:python ,python-2
-       #:phases (modify-phases %standard-phases
-                  (add-before
-                   'build 'set-libnotmuch-file-name
-                   (lambda* (#:key inputs #:allow-other-keys)
-                     (let ((notmuch (assoc-ref inputs "notmuch")))
-                       (substitute* "notmuch/globals.py"
-                         (("libnotmuch\\.so\\.[0-9]")
-                          (string-append notmuch "/lib/libnotmuch.so.4")))
-                       #t))))
-       #:tests? #f))                              ;no "test" target
-    (home-page "http://notmuchmail.org/")
-    (synopsis "Python bindings of the Notmuch mail indexing library")
-    (description
-     "This package provides Python bindings to use the Notmuch mail indexing
-and search library.")
-    (license gpl3+)))
 
 (define-public getmail
   (package