fix setup from a tarball again

this makes the following work again.

    DIR=$(mktemp -d)
    git archive --format=tar HEAD | (cd ${DIR} && tar xf -)
    cd ${DIR}
    python ./setup.py install

PBR_VERSION environment variable didn't work as we expected
because it unconditionally overrides versions for other packages
even if there are other ways to get their versions.  eg. PKG_INFO.

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

1 files changed, 11 insertions, 0 deletions

diff --git a/ryu/hooks.py b/ryu/hooks.py
index 3883a7d2..6d8cf9ae 100644
--- a/ryu/hooks.py
+++ b/ryu/hooks.py
@@ -15,6 +15,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+import os
 import sys
 from setuptools.command import easy_install
 from ryu import version
@@ -60,3 +61,13 @@ def setup_hook(config):
 
     packaging.override_get_script_args = my_get_script_args
     easy_install.get_script_args = my_get_script_args
+
+    # another hack to allow setup from tarball.
+    orig_get_version = packaging.get_version
+
+    def my_get_version(package_name, pre_version=None):
+        if package_name == 'ryu':
+            return str(version)
+        return orig_get_version(package_name, pre_version)
+
+    packaging.get_version = my_get_version