Build fails on nix-on-droid

[bemyak]

Describe the bug

I'm trying to build a package inside a nix-on-droid environment, but the build fails on the installation phase:

Running phase: installPhase
@nix { "action": "setPhase", "phase": "installPhase" }
searching for bins/libs to install from cargo build log at cargoBuildLog3y5q.json
installing /tmp/nix-build-zola-new-0.1.6.drv-0/source/target/release/zola-new
searching for bins/libs complete
stripping references to cargoVendorDir from:
tee: /dev/fd/3: Permission denied

(the origin is here I believe)

Seems like it's not allowed to write to /dev/fd/3 on Android. Can this be avoided somehow?

I realize that it's a pretty niche use case, but it would be so cool to get it working 🙂

Reproduction

1. Install nix-on-droid
2. Try to build any rust package (I'm building https://gitlab.com/bemyak/zola-new)

(NB: The process takes hours because of how proot is slow)

[dpc]

This might be something to report to nix-on-droid. Accessing fd 3 is rather ... common and uncontroversial and used by all sorts of software.

[bemyak]

Thanks! I've created this issue: nix-community/nix-on-droid#423

[ipetkov]

Hi @bemyak thanks for the report! It was pretty easy to avoid referencing /dev/fd directly (in favor of cat with a redirection) so this should be fixed with #737

[bemyak]

It works now, thanks a lot 🎉