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

Pants

and a last question how do i tell pants, please "execute" `experimental_run_shell_command` or `experimental_shell_command`

You would run `./pants run path/to:target` typically

(that is for experimental_run_shell_command)

For `experimental_shell_command`, doing ~anything (specifically, anything that uses source files, such as testing or packaging) on a target that depends on the `experimental_shell_command` target, will invoke it, and its outputs will be in the sandbox for the downstream actions