Move the version info into the source code instead of static VERSION

file

This fixes juju#1025 by removing the dependency to the external static
VERSION file from within the project, allowing it to work in
environments where pylibjuju is installed as a dependency library.

Note that this changes the release process. In particular where we
need to manually change the version information is moved into
version.py (the release process document will be updated) This also
removes the VERSION file.

MANIFEST.in

@@ -1,4 +1,4 @@
-include *.py CONTRIBUTORS LICENSE README.rst VERSION
+include *.py CONTRIBUTORS LICENSE README.rst
 recursive-include juju *.py
 recursive-include examples *.py
 recursive-include docs *.rst

Makefile

@@ -1,7 +1,7 @@
 BIN := .tox/py3/bin
 PY := $(BIN)/python3
 PIP := $(BIN)/pip3
-VERSION=$(shell cat VERSION)
+VERSION := $(shell $(PY) -c "from version import CLIENT_VERSION; print(CLIENT_VERSION)")
 
 .PHONY: clean
 clean:

juju/version.py

@@ -1,19 +1,8 @@
 # Copyright 2023 Canonical Ltd.
 # Licensed under the Apache V2, see LICENCE file for details.
 
-import pathlib
-import re
-
 LTS_RELEASES = ["jammy", "focal", "bionic", "xenial", "trusty", "precise"]
 
 DEFAULT_ARCHITECTURE = 'amd64'
 
-# CLIENT_VERSION (that's read from the VERSION file) is the highest Juju server
-# version that this client supports.
-# Note that this is a ceiling. CLIENT_VERSION <= juju-controller-version works.
-# For CLIENT_VERSION < juju-controller-version (strictly smaller), we emit a warning
-# to update the client to the latest.
-# However, for any CLIENT_VERSION > juju-controller-version, a "client incompatible
-# with server" will be returned by the juju controller.
-VERSION_FILE_PATH = pathlib.Path(__file__).parent.parent / 'VERSION'
-CLIENT_VERSION = re.search(r'\d+\.\d+\.\d+', open(VERSION_FILE_PATH).read().strip()).group()
+CLIENT_VERSION = "3.3.1.0"

setup.py

@@ -5,6 +5,8 @@
 
 from setuptools import find_packages, setup
 
+from juju.version import CLIENT_VERSION
+
 here = Path(__file__).absolute().parent
 readme = here / 'docs' / 'readme.rst'
 changelog = here / 'docs' / 'changelog.rst'
@@ -13,11 +15,10 @@
     changelog.read_text()
 )
 long_description_content_type = 'text/x-rst'
-version = here / 'VERSION'
 
 setup(
     name='juju',
-    version=version.read_text().strip(),
+    version=CLIENT_VERSION.strip(),
     packages=find_packages(
         exclude=["*.tests", "*.tests.*", "tests.*", "tests"]),
     package_data={'juju': ['py.typed']},