Canonicalize GraalPy implementation name.

docs/changelog/73.bugfix.rst

@@ -0,0 +1 @@
+Canonicalize GraalVM to match GraalPy Python interpreter in PythonSpec and PythonInfo. - by :user:`timfel`.

src/python_discovery/_py_info.py

@@ -59,6 +59,8 @@ def __init__(self) -> None:
     def _init_identity(self) -> None:
         self.platform = sys.platform
         self.implementation = platform.python_implementation()
+        if self.implementation == "GraalVM":
+            self.implementation = "GraalPy"
         if self.implementation == "PyPy":
             self.pypy_version_info = tuple(sys.pypy_version_info)  # ty: ignore[unresolved-attribute] # pypy only
 

src/python_discovery/_py_spec.py

@@ -77,6 +77,8 @@ def _parse_spec_pattern(string_spec: str) -> PythonSpec | None:
     impl = groups["impl"]
     if impl in {"py", "python"}:
         impl = None
+    if impl == "graalvm":
+        impl = "graalpy"
     arch = _int_or_none(groups["arch"])
     machine = groups.get("machine")
     if machine is not None:
@@ -97,6 +99,8 @@ def _parse_specifier(string_spec: str) -> PythonSpec | None:
         return None
     if impl in {"py", "python"}:
         impl = None
+    if impl == "graalvm":
+        impl = "graalpy"
     return PythonSpec(string_spec, impl, None, None, None, None, None, version_specifier=version_specifier)
 
 

tests/test_py_info_extra.py

@@ -32,6 +32,12 @@ def test_py_info_pypy_version(mocker: MockerFixture) -> None:
     assert info.pypy_version_info == (7, 3, 11, "final", 0)
 
 
+def test_py_info_canonicalizes_graalvm(mocker: MockerFixture) -> None:
+    mocker.patch("platform.python_implementation", return_value="GraalVM")
+    info = PythonInfo()
+    assert info.implementation == "GraalPy"
+
+
 def test_has_venv_attribute() -> None:
     info = PythonInfo()
     assert isinstance(info.has_venv, bool)

tests/test_py_spec.py

@@ -155,6 +155,12 @@ def test_specifier_with_implementation() -> None:
     assert spec.version_specifier == SpecifierSet.from_string(">=3.12")
 
 
+def test_specifier_with_graalpy_implementation_alias() -> None:
+    spec = PythonSpec.from_string_spec("graalvm>=3.12")
+    assert spec.implementation == "graalpy"
+    assert spec.version_specifier == SpecifierSet.from_string(">=3.12")
+
+
 def test_specifier_satisfies_with_partial_information() -> None:
     spec = PythonSpec.from_string_spec(">=3.12")
     candidate = PythonSpec.from_string_spec("python3.12")
@@ -245,3 +251,10 @@ def test_normalize_isa(isa: str, normalized: str) -> None:
 )
 def test_spec_repr_machine(spec_str: str, in_repr: str) -> None:
     assert in_repr in repr(PythonSpec.from_string_spec(spec_str))
+
+
+@pytest.mark.parametrize(("left", "right"), [("graalpy", "graalvm"), ("graalvm", "graalpy")])
+def test_spec_satisfies_graalpy_implementation_aliases(left: str, right: str) -> None:
+    spec_1 = PythonSpec.from_string_spec(left)
+    spec_2 = PythonSpec.from_string_spec(right)
+    assert spec_1.satisfies(spec_2) is True