Fix version detection for pre-release versions (#175)

Pre-release versions like 0.3.0rc2 were incorrectly identified as <
0.3.0 due to PEP 440 semantics, causing the server to use a module path
without a __main__ entry point. This resulted in containers exiting
immediately with code 0.

Use base_version for comparison to ignore pre-release suffixes

Signed-off-by: Derek Higgins <[email protected]>

Author: derekhiggins

controllers/resource_helper.go

@@ -64,11 +64,14 @@ try:
     print(f'Detected llama-stack version: {llama_version}', file=sys.stderr)
 
     v = pkg_version.parse(llama_version)
+    # Use base_version to ignore pre-release/post-release/dev suffixes
+    # This ensures that 0.3.0rc2, 0.3.0alpha1, etc. are treated as 0.3.0
+    base_v = pkg_version.parse(v.base_version)
 
-    if v < pkg_version.parse('0.2.17'):
+    if base_v < pkg_version.parse('0.2.17'):
         print('Using legacy module path (llama_stack.distribution.server.server)', file=sys.stderr)
         print(0)
-    elif v < pkg_version.parse('0.3.0'):
+    elif base_v < pkg_version.parse('0.3.0'):
         print('Using core module path (llama_stack.core.server.server)', file=sys.stderr)
         print(1)
     else: