Use setuptools-scm to manage version

.gitignore

@@ -10,6 +10,7 @@ __pycache__/
 /build/
 /dist/
 /.eggs/
+/yq/version.py
 
 # IDE project files
 /.pydevproject

Makefile

@@ -1,10 +1,6 @@
 test_deps:
 	pip install .[tests]
 
-version: yq/version.py
-yq/version.py: setup.py
-	echo "__version__ = '$$(python setup.py --version)'" > $@
-
 lint: test_deps
 	flake8 $$(python setup.py --name)
 
@@ -14,7 +10,7 @@ test: test_deps lint
 docs:
 	sphinx-build docs docs/html
 
-install: clean version
+install: clean
 	pip install build
 	python -m build
 	pip install --upgrade dist/*.whl

setup.py

@@ -12,6 +12,10 @@
     description="Command-line YAML/XML processor - jq wrapper for YAML/XML documents",
     long_description=open("README.rst").read(),
     python_requires=">=3.6",
+    use_scm_version={
+        "write_to": "yq/version.py",
+    },
+    setup_requires=['setuptools_scm >= 3.4.3'],
     install_requires=[
         "PyYAML >= 5.3.1",
         "xmltodict >= 0.11.0",

yq/__init__.py

@@ -15,7 +15,11 @@
 from .parser import get_parser, jq_arg_spec
 from .loader import get_loader
 from .dumper import get_dumper
-from .version import __version__  # noqa
+
+try:
+    from .version import version as __version__
+except ImportError:
+    __version__ = "0.0.0"
 
 class JSONDateTimeEncoder(json.JSONEncoder):
     def default(self, o):

yq/parser.py

@@ -2,7 +2,10 @@
 
 import sys, argparse, subprocess
 
-from .version import __version__
+try:
+    from .version import version as __version__
+except ImportError:
+    __version__ = "0.0.0"
 
 # jq arguments that consume positionals must be listed here to avoid our parser mistaking them for our positionals
 jq_arg_spec = {"--indent": 1, "-f": 1, "--from-file": 1, "-L": 1, "--arg": 2, "--argjson": 2, "--slurpfile": 2,