deb: install zsh completions to /usr/share/zsh/vendor-completions

This location is used by debian (and ubuntu) to store completions provided by
other deb packages.  The default fpath appears to have this before any of the
zsh-provided instances of the completions, so this should take precedence.

Differential Revision: https://phab.mercurial-scm.org/D882

contrib/debian/rules

@@ -1,36 +1,38 b''
 #!/usr/bin/make -f
 # Uncomment this to turn on verbose mode.
 # export DH_VERBOSE=1
 
 CPUS=$(shell cat /proc/cpuinfo | grep -E ^processor | wc -l)
 
 %:
 	dh $@ --with python2
 
 override_dh_auto_test:
 	http_proxy='' dh_auto_test -- TESTFLAGS="-j$(CPUS)"
 
 override_dh_python2:
 	dh_python2
 	find debian/mercurial/usr/share -type d -empty -delete
 
 override_dh_install:
 	python$(PYVERS) setup.py install --root $(CURDIR)/debian/mercurial --install-layout=deb
 	# remove arch-independent python stuff
 	find $(CURDIR)/debian/mercurial/usr/lib \
 		! -name '*.so' ! -type d -delete , \
 		-type d -empty -delete
 	python$(PYVERS) setup.py install --root $(CURDIR)/debian/mercurial-common --install-layout=deb
 	make install-doc PREFIX=$(CURDIR)/debian/mercurial-common/usr
 	# remove arch-dependent python stuff
 	find $(CURDIR)/debian/mercurial-common/usr/lib \
 		-name '*.so' ! -type d -delete , \
 		-type d -empty -delete
 	cp contrib/hg-ssh $(CURDIR)/debian/mercurial-common/usr/bin
 	mkdir -p $(CURDIR)/debian/mercurial-common/usr/share/mercurial
 	cp contrib/hgk $(CURDIR)/debian/mercurial-common/usr/share/mercurial
 	mkdir -p $(CURDIR)/debian/mercurial-common/etc/mercurial/hgrc.d/
 	cp contrib/debian/*.rc $(CURDIR)/debian/mercurial-common/etc/mercurial/hgrc.d/
 	mkdir -p $(CURDIR)/debian/mercurial-common/usr/share/bash-completion/completions
 	cp contrib/bash_completion $(CURDIR)/debian/mercurial-common/usr/share/bash-completion/completions/hg
+	mkdir -p $(CURDIR)/debian/mercurial-common/usr/share/zsh/vendor-completions
+	cp contrib/zsh_completion $(CURDIR)/debian/mercurial-common/usr/share/zsh/vendor-completions/_hg
 	rm $(CURDIR)/debian/mercurial-common/usr/bin/hg

tests/test-debian-packages.t

@@ -1,23 +1,26 b''
 #require test-repo slow debhelper debdeps
 
   $ . "$TESTDIR/helpers-testrepo.sh"
   $ testrepohgenv
 
 Ensure debuild doesn't run the testsuite, as that could get silly.
   $ DEB_BUILD_OPTIONS=nocheck
   $ export DEB_BUILD_OPTIONS
   $ OUTPUTDIR=`pwd`
   $ export OUTPUTDIR
 
   $ cd "$TESTDIR"/..
   $ make deb > $OUTPUTDIR/build.log 2>&1
   $ cd $OUTPUTDIR
   $ ls *.deb | grep -v 'dbg'
   mercurial-common_*.deb (glob)
   mercurial_*.deb (glob)
 main deb should have .so but no .py
   $ dpkg --contents mercurial_*.deb | egrep '(localrepo|parsers)'
   * ./usr/lib/python2.7/dist-packages/mercurial/cext/parsers*.so (glob)
 mercurial-common should have py but no .so or pyc
   $ dpkg --contents mercurial-common_*.deb | egrep '(localrepo|parsers.*so)'
   * ./usr/lib/python2.7/dist-packages/mercurial/localrepo.py (glob)
+zsh completions should be in the common package
+  $ dpkg --contents mercurial-common_*.deb | egrep 'zsh.*[^/]$'
+  * ./usr/share/zsh/vendor-completions/_hg (glob)