Add -v/--version flag

Signed-off-by: Jean-Christophe Morin <[email protected]>

src/rez_pip/cli.py

@@ -92,6 +92,13 @@ def _createParser() -> argparse.ArgumentParser:
         "-h", "--help", action="help", help="Show this help message and exit."
     )
 
+    generalGroup.add_argument(
+        "-v",
+        "--version",
+        action="version",
+        version=importlib_metadata.version(__package__),
+    )
+
     debugGroup = parser.add_argument_group(title="debug options")
     debugGroup.add_argument(
         "-l",

tests/test_cli.py

@@ -13,6 +13,7 @@
 
 import pytest
 import rich.console
+import packaging.version
 
 import rez_pip.cli
 import rez_pip.pip
@@ -114,6 +115,16 @@ def test_parseArgs_pipArgs():
     assert pipArgs == ["adasdasd", "--requirement", "asd.txt"]
 
 
+def test_version():
+    result = subprocess.run(
+        [sys.executable, "-m", "rez_pip", "--version"],
+        check=True,
+        stdout=subprocess.PIPE,
+        text=True,
+    )
+    assert packaging.version.parse(result.stdout.strip())
+
+
 def test_validateArgs_pip_good(tmp_path: pathlib.Path):
     path = pathlib.Path(tmp_path / "asd.pyz")