fix #727: correctly handle incomplete archivals from setuptools_scm_g…

CHANGELOG.rst

@@ -1,3 +1,9 @@
+v7.0.4
+=======
+
+* fix #727: correctly handle incomplete archivals from setuptools_scm_git_archival
+* fix #691: correctly handle specifying root in pyproject.toml
+
 v7.0.3
 =======
 * fix mercurial usage when pip primes a isolated environment

src/setuptools_scm/git.py

@@ -276,7 +276,8 @@ def search_parent(dirname: _t.PathT) -> GitWorkdir | None:
 
 def archival_to_version(
     data: dict[str, str], config: Configuration | None = None
-) -> ScmVersion:
+) -> ScmVersion | None:
+    node: str | None
     trace("data", data)
     archival_describe = data.get("describe-name", DESCRIBE_UNSUPPORTED)
     if DESCRIBE_UNSUPPORTED in archival_describe:
@@ -293,7 +294,11 @@ def archival_to_version(
     if versions:
         return meta(versions[0], config=config)
     else:
-        return meta("0.0", node=data.get("node"), config=config)
+        node = data.get("node")
+        if node is not None:
+            return meta("0.0", node=node, config=config)
+        else:
+            return None
 
 
 def parse_archival(

testing/test_git.py

@@ -529,9 +529,17 @@ def test_git_getdate_signed_commit(signed_commit_wd: WorkDir) -> None:
 def test_git_archival_to_version(expected: str, from_data: dict[str, str]) -> None:
     config = Configuration()
     version = archival_to_version(from_data, config=config)
+    assert version is not None
     assert (
         format_version(
             version, version_scheme="guess-next-dev", local_scheme="node-and-date"
         )
         == expected
     )
+
+
+@pytest.mark.issue("https://github.com/pypa/setuptools_scm/issues/727")
+def test_git_archival_node_missing_no_version() -> None:
+    config = Configuration()
+    version = archival_to_version({}, config=config)
+    assert version is None