Stop attempting to build pypy package mips64el, ppc64 and sparc64 - where pypy is not available.

debian/changelog

@@ -1,6 +1,8 @@
 dulwich (0.19.9-2) UNRELEASED; urgency=medium
 
   * Use secure copyright file specification URI.
+  * Stop attempting to build pypy package mips64el, ppc64 and sparc64 -
+    where pypy is not available.
 
  -- Jelmer Vernooij <jelmer@debian.org>  Mon, 19 Nov 2018 19:53:42 +0000
 

debian/control

@@ -7,7 +7,7 @@ Homepage: https://www.dulwich.io/
 Build-Depends: debhelper (>= 11),
                dh-python,
                git (>= 1:1.7.0.4-2) [!alpha !ppc64 !sparc64 !x32 !ia64],
-               pypy-dev [alpha amd64 arm64 armel armhf i386 mips mips64el powerpc ppc64 ppc64el s390x sparc64]
+               pypy-dev [alpha amd64 arm64 armel armhf i386 mips powerpc ppc64el s390x]
                python-all-dbg (>= 2.6.6-3),
                python-all-dev (>= 2.6.6-3),
                python-certifi,
@@ -45,7 +45,7 @@ Description: Python Git library
  This package contains the module built for Python version 2.x.
 
 Package: pypy-dulwich
-Architecture: alpha amd64 arm64 armel armhf i386 mips mips64el mipsel powerpc ppc64 ppc64el s390x sparc64
+Architecture: alpha amd64 arm64 armel armhf i386 mips mipsel powerpc ppc64el s390x
 Provides: ${pypy:Provides}
 Depends: ${misc:Depends}, ${pypy:Depends}, ${shlibs:Depends}
 Recommends: pypy-fastimport