login page

Lib/site-packages/virtualenv/discovery/windows/__init__.py

@@ -0,0 +1,28 @@
+from __future__ import absolute_import, unicode_literals
+
+from ..py_info import PythonInfo
+from ..py_spec import PythonSpec
+from .pep514 import discover_pythons
+
+
+class Pep514PythonInfo(PythonInfo):
+    """"""
+
+
+def propose_interpreters(spec, cache_dir):
+    # see if PEP-514 entries are good
+
+    # start with higher python versions in an effort to use the latest version available
+    existing = list(discover_pythons())
+    existing.sort(key=lambda i: tuple(-1 if j is None else j for j in i[1:4]), reverse=True)
+
+    for name, major, minor, arch, exe, _ in existing:
+        # pre-filter
+        if name in ("PythonCore", "ContinuumAnalytics"):
+            name = "CPython"
+        registry_spec = PythonSpec(None, name, major, minor, None, arch, exe)
+        if registry_spec.satisfies(spec):
+            interpreter = Pep514PythonInfo.from_exe(exe, cache_dir, raise_on_error=False)
+            if interpreter is not None:
+                if interpreter.satisfies(spec, impl_must_match=True):
+                    yield interpreter