Tweak dependency conversion and tests

1. unittests work against 3.8, thus accept it when converting dependencies,
   even if it is not supported by running ST.
2. raise macosx requirements for python 3.13 dependencies.

Author: deathaxe

package_control/distinfo.py

@@ -157,7 +157,7 @@ def generate_wheel(python_version, plat_specific):
             specific to a platform and optionally architecture
         """
 
-        if python_version is not None and python_version not in sys_path.python_versions():
+        if python_version is not None and python_version not in ("3.3", "3.8", "3.13"):
             raise ValueError("Invalid python_version %s" % repr(python_version))
 
         version_tag = "py3"
@@ -171,8 +171,10 @@ def generate_wheel(python_version, plat_specific):
                 arch = os.uname()[4]
                 if python_version == "3.3":
                     arch_tag = "macosx_10_7_%s" % arch
-                else:
+                elif python_version == "3.8":
                     arch_tag = "macosx_10_9_%s" % arch
+                elif python_version == "3.13":
+                    arch_tag = "macosx_10_13_%s" % arch
             elif sys.platform == "linux":
                 arch_tag = "linux_%s" % os.uname()[4]
             else:

package_control/tests/test_distinfo.py

@@ -16,6 +16,8 @@ def _tag(version):
             tag = "macosx_10_7_%s" % os.uname()[4]
         elif version == "3.8":
             tag = "macosx_10_9_%s" % os.uname()[4]
+        elif version == "3.13":
+            tag = "macosx_10_13_%s" % os.uname()[4]
         else:
             raise ValueError("Invalid version")
     elif sys.platform == "linux":