use package version from ci when uploading to pypi

Signed-off-by: Denys Smirnov <denys@sourced.tech>

Author: Denys Smirnov

.travis.yml

@@ -16,6 +16,7 @@ install:
   - docker exec bblfshd bblfshctl driver install bblfsh/python-driver:$BBLFSH_PYTHON_VERSION
   - wget https://github.com/bblfsh/client-python/releases/download/v2.2.1/protobuf-python_3.4.1-1_amd64.deb
   - sudo dpkg -i protobuf-python_3.4.1-1_amd64.deb
+  - if [[ ! -z "$TRAVIS_TAG" ]]; then sed -i -e "s/^VERSION\s*=\s*\"[^\"]\+\"/VERSION = \"${TRAVIS_TAG#v}\"/g" setup.py; fi
   - pip3 install --upgrade pip
   - pip3 install -r requirements.txt
   - python3 setup.py --getdeps --log

setup.py

@@ -12,7 +12,9 @@
 from setuptools import setup, find_packages, Extension
 from setuptools.command.build_ext import build_ext
 
-VERSION = "3.0.1"
+# The VERSION line is edited automatically during deployments.
+# You may change the contents of the string, but do not otherwise edit the line.
+VERSION = "3.x.x-dev"
 LIBUAST_VERSION = "v3.1.0"
 LIBUAST_ARCH = "linux-amd64"
 SDK_V1_VERSION = "v1.16.1"