Ergonomic, hermetic, user-friendly software build system for Python, Go, Java, Kotlin, Protobuf, Scala, Shell. Pants lets you fearlessly scale up your codebase!

Pants

oh pants does seem to build under release.sh and USE_PY39
```% MODE=debug USE_PY39=true build-support/bin/release.sh publish
[=== 00:00 Building native code... ===]
   Compiling pyo3-build-config v0.16.4
   Compiling pyo3-macros-backend v0.16.2
   Compiling pyo3-ffi v0.16.2
   Compiling pyo3 v0.16.2
   Compiling engine v0.0.1 (/Users/yic/workspace/oss_pants/src/rust/engine)
   Compiling pyo3-macros v0.16.2
    Finished dev [unoptimized + debuginfo] target(s) in 12.84s
13:08:30.96 [INFO] Starting: Resolving plugins: hdrhistogram, toolchain.pants.plugin==0.18.0```