Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
declare_args() { # libc++ ABI version. Either 1 (default) or 2 (unstable). libcxx_abi_version = 1 # libc++ inline ABI namespace. Defaults to __n, where n is the ABI version. libcxx_abi_namespace = "" }