[CI Failure]: mi325_1: Python-only Installation Test

[AndreasKaratzas]

Name of failing test

bash standalone_tests/python_only_compile.sh

Basic information

• Flaky test
• Can reproduce locally
• Caused by external libraries (e.g. bug in transformers)

🧪 Describe the failing test

This test validates Python-only installation of vLLM using precompiled binaries on systems without build tools.

Purpose:
Ensures users can deploy vLLM in environments lacking C/C++ compilers by leveraging precompiled wheels instead of source compilation.

Test Flow:

1. Removes all compiler toolchains (build-essential)
2. Forces precompiled binary installation via VLLM_USE_PRECOMPILED=1
3. Injects a runtime marker into __init__.py to verify the Python package loads
4. Validates successful import and execution

Error Summary:

Python-only compilation test failed during setup. The script tried to restore source files with mv src/vllm ./vllm but the directory doesn't exist at that path. Test never reached the actual compilation validation.

Relevant Logs:

+ cd /vllm-workspace/
+ pip3 uninstall -y vllm
Found existing installation: vllm 0.11.2.dev223+g8ae654669.rocm710
  Successfully uninstalled vllm-0.11.2.dev223+g8ae654669.rocm710
+ mv src/vllm ./vllm
mv: cannot stat 'src/vllm': No such file or directory
 Error: The command exited with status 1

Root Cause: Directory structure mismatch in CI container - src/vllm path doesn't exist.

📝 History of failing test

Test failure history:

AMD-CI build Buildkite references:

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