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Redoxpkgs

Redoxpkgs is an overlay to allow using Nix to cross-compile packages to Redox.

Installation

Install Nix, a declarative build system:

curl -L https://nixos.org/nix/install | sh

Install Cachix, a build cache system:

nix-env -iA cachix -f https://cachix.org/api/v1/install

Enable the Nix Community cache:

cachix use nix-community

Usage

To compile cowsay:

nix-build . -A pkgsCross.x86_64-unknown-redox.cowsay

You can also try hexyl or sl.

To install a compiled package onto Redox, copy the /nix/store path at the end of nix-build's stdout onto your Redox filesystem:

redoxfs harddrive.bin /mnt
mkdir -p /mnt/nix/store
cp -r /nix/store/mfhmfarn90g71ysxi7z6iaz07dwjj166-cowsay-3.03+dfsg2-x86_64-unknown-redox /mnt/nix/store

Unmount your filesystem, launch QEMU, and enjoy:

(redox) $ echo 'hi' | /nix/store/mfhmfarn90g71ysxi7z6iaz07dwjj166-cowsay-3.03+dfsg2-x86_64-unknown-redox/bin/cowsay