Don't run against C git on ia64 (unavailable).

debian/changelog

@@ -3,6 +3,7 @@ dulwich (0.19.6-3) UNRELEASED; urgency=medium
   * Add debian/upstream/metadata.
   * Install example scripts.
   * Don't build pypy package on hppa, powerpcspe.
+  * Don't run against C git on ia64 (unavailable).
 
  -- Jelmer Vernooij <jelmer@debian.org>  Sun, 16 Sep 2018 00:25:19 +0100
 

debian/control

@@ -4,7 +4,7 @@ Priority: optional
 Maintainer: Debian Python Modules Team <python-modules-team@lists.alioth.debian.org>
 Uploaders: Jelmer Vernooij <jelmer@debian.org>
 Homepage: https://www.dulwich.io/
-Build-Depends: python-all-dev (>= 2.6.6-3), python-all-dbg (>= 2.6.6-3), python3-all-dev, python3-all-dbg, debhelper (>= 9.20160114), python-unittest2, git (>= 1:1.7.0.4-2) [!alpha !ppc64 !sparc64 !x32], python-fastimport (>= 0.9.0~bzr293), python3-fastimport, pypy-dev [!hurd-any !m68k !sh4 !x32 !hppa !powerpcspe], dh-python, python-certifi, python3-certifi, python-urllib3, python3-urllib3
+Build-Depends: python-all-dev (>= 2.6.6-3), python-all-dbg (>= 2.6.6-3), python3-all-dev, python3-all-dbg, debhelper (>= 9.20160114), python-unittest2, git (>= 1:1.7.0.4-2) [!alpha !ppc64 !sparc64 !x32 !ia64], python-fastimport (>= 0.9.0~bzr293), python3-fastimport, pypy-dev [!hurd-any !m68k !sh4 !x32 !hppa !powerpcspe], dh-python, python-certifi, python3-certifi, python-urllib3, python3-urllib3
 Standards-Version: 4.1.1
 Vcs-Git: https://salsa.debian.org/python-team/modules/dulwich.git
 Vcs-Browser: https://salsa.debian.org/python-team/modules/dulwich