[BUG] RuntimeError: failed to build behaviour: Permission denied on Android proot (aarch64)

[hizzario]

Running exo on Android (Samsung Galaxy S24 FE) under Termux + proot-distro Debian on aarch64. Exo installs and builds successfully including the Rust pyo3 bindings, but fails to start with:
RuntimeError: failed to build behaviour: Permission denied (os error 13)
Traceback points to NetworkingHandle initialization in Router.create(). Appears to be libp2p TCP transport hitting a kernel permission wall inside proot. --no-worker flag does not bypass the issue as the crash occurs before worker initialization.
Environment:

Device: Samsung Galaxy S24 FE
OS: Android (non-rooted) + Termux + proot-distro Debian
Architecture: aarch64
Python: 3.13.5
Exo: 0.3.70 (a8602ea)
Rust: 1.95.0

[AndreiCravtov]

I don't think we support android as a platform to run on at the moment.

I don't know what kind of tricks proot does in order to make debian runnable in rootless mode, but it might be interesting to look into.

Can you reproduce the same permission errors on a rootless sandbox in regular linux? i.e. do you need to run Exo as root?