Use setuptools_scm to implement tag-based versioning

.gitignore

@@ -134,3 +134,6 @@ dmypy.json
 # CodeTF and sarif files
 *.codetf*
 *.sarif
+
+# version
+src/codemodder/_version.py

pyproject.toml

@@ -1,10 +1,10 @@
 [build-system]
-requires = ["setuptools"]
+requires = ["setuptools", "setuptools_scm>=8"]
 build-backend = "setuptools.build_meta"
 
 [project]
+dynamic = ["version"]
 name = "codemodder-python"
-version = "0.60.0"
 requires-python = ">=3.10.0"
 readme = "README.md"
 license = {file = "LICENSE"}
@@ -34,6 +34,9 @@ core = "core_codemods:registry"
 "core_codemods.semgrep" = ["src/core_codemods/semgrep/*.yaml"]
 "core_codemods.docs" = ["src/core_codemods/docs/*.md"]
 
+[tool.setuptools_scm]
+version_file = "src/codemodder/_version.py"
+
 [tool.pytest.ini_options]
 # Ignore integration tests and ci tests by default
 testpaths = ["tests"]

src/codemodder/__init__.py

@@ -1,2 +1,4 @@
-# TODO: use tag-based versioning
-__VERSION__ = "0.57.0"
+try:
+    from ._version import __version__
+except ImportError:
+    __version__ = "unknown"

src/codemodder/cli.py

@@ -1,7 +1,7 @@
 import argparse
 import sys
 
-from codemodder import __VERSION__
+from codemodder import __version__
 from codemodder.code_directory import DEFAULT_INCLUDED_PATHS, DEFAULT_EXCLUDED_PATHS
 from codemodder.logging import OutputFormat, logger
 
@@ -111,7 +111,7 @@ def parse_args(argv, codemod_registry):
         help="Comma-separated set of codemod ID(s) to include",
     )
 
-    parser.add_argument("--version", action="version", version=__VERSION__)
+    parser.add_argument("--version", action="version", version=__version__)
     parser.add_argument(
         "--list",
         action=build_list_action(codemod_registry),

src/codemodder/codemodder.py

@@ -11,7 +11,7 @@
 from libcst.codemod import CodemodContext
 from codemodder.file_context import FileContext
 
-from codemodder import registry, __VERSION__
+from codemodder import registry, __version__
 from codemodder.logging import configure_logger, logger, log_section, log_list
 from codemodder.cli import parse_args
 from codemodder.change import ChangeSet
@@ -176,7 +176,7 @@ def run(original_args) -> int:
     configure_logger(argv.verbose, argv.log_format, argv.project_name)
 
     log_section("startup")
-    logger.info("codemodder: python/%s", __VERSION__)
+    logger.info("codemodder: python/%s", __version__)
 
     repo_manager = PythonRepoManager(Path(argv.directory))
     context = CodemodExecutionContext(

src/codemodder/report/codetf_reporter.py

@@ -1,6 +1,6 @@
 import json
 from os.path import abspath
-from codemodder import __VERSION__
+from codemodder import __version__
 from codemodder.logging import logger
 
 
@@ -9,7 +9,7 @@ def base_report():
         "run": {
             "vendor": "pixee",
             "tool": "codemodder-python",
-            "version": __VERSION__,
+            "version": __version__,
             "sarifs": [],
         },
         "results": [],

tests/test_version.py

@@ -0,0 +1,5 @@
+from codemodder import __version__
+
+
+def test_version():
+    assert __version__ != "unknown"