add license meta to setup.py
diff --git a/setup.py b/setup.py
index d683a432fee9..1e4b0da1ccc5 100644
--- a/setup.py
+++ b/setup.py
@@ -201,6 +201,7 @@ def cuda_ext_helper(name, sources, extra_cuda_flags, extra_cxx_flags=[]):
     description='An integrated large-scale model training system with efficient parallelization techniques',
     long_description=fetch_readme(),
     long_description_content_type='text/markdown',
+    license='Apache Software License 2.0',
     url='https://www.colossalai.org',
     project_urls={
         'Forum': 'https://github.com/hpcaitech/ColossalAI/discussions',

This PR fixes missing license meta data when using `pip show`