New comment by kmltdr on void-packages repository

https://github.com/void-linux/void-packages/issues/18970#issuecomment-601327434

Comment:
I had exactly the same problem, but thanks to @mephistopheles-8's suggestion, I managed to run hello example. What I did:
- add myself to `nixbld` group
- enable nix-daemon: `ln -s /etc/sv/nix-daemon/ /var/service/`
- add `build-use-sandbox = false` to `/etc/nix/nix.conf `
- add nixpkgs-unstable channel: `nix-channel --add http://nixos.org/channels/nixpkgs-unstable nixpkgs`