[PATCH] t/lib-cvs: cvsimport no longer works without Python >= 2.7

[Junio C Hamano <gitster@pobox.com>]

The new cvsimport requires at least Python 2.7 to work; do not fail
the cvsimport tests on platforms without one.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

 Junio C Hamano <gitster@pobox.com> writes:

 > http://docs.python.org/2/library/subprocess.html tells me that
 > check_output has first become available in 2.7.
 >
 > So... does this mean that we now set the minimum required version of
 > Python to 2.7?  I dunno.

 Even if we were to rip out the fallback code that uses the 2.7-only
 subprocess.check_output() on "cvsps -V", the function is also used
 for doing the real work interacting with cvsps-3.x, so I think this
 patch will be necessary.  Unless new cvsimport is tweaked not to
 use the method, that is.

 A suggestion for a better alternative is of course very much
 appreciated.

 I do not want to keep pushing integration results that do not pass
 tests even for myself for too many integration cycles, so I'll keep
 this patch at the tip of the topic, at least for now.

 t/lib-cvs.sh | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/t/lib-cvs.sh b/t/lib-cvs.sh
index b55e861..4e890ea 100644
--- a/t/lib-cvs.sh
+++ b/t/lib-cvs.sh
@@ -27,6 +27,21 @@ case "$cvsps_version" in
 	;;
 esac
 
+if ! test_have_prereq PYTHON
+then
+	skipall='skipping cvsimport tests, no python'
+	test_done
+fi
+
+python -c '
+import sys
+if sys.hexversion < 0x02070000:
+	sys.exit(1)
+' || {
+	skip_all='skipping cvsimport tests, python too old (< 2.7)'
+	test_done
+}
+
 setup_cvs_test_repository () {
 	CVSROOT="$(pwd)/.cvsroot" &&
 	cp -r "$TEST_DIRECTORY/$1/cvsroot" "$CVSROOT" &&
-- 
1.8.1.421.g6236851