To use the binary cache, add to your flake:
{
  nixConfig = {
    extra-substituters = ["https://nix-repository--aster-void.cachix.org"];
    extra-trusted-public-keys = ["nix-repository--aster-void.cachix.org-1:A+IaiSvtaGcenevi21IvvODJoO61MtVbLFApMDXQ1Zs="];
  };
}Or for one-off use:
nix build --extra-substituters https://nix-repository--aster-void.cachix.org \
          --extra-trusted-public-keys nix-repository--aster-void.cachix.org-1:A+IaiSvtaGcenevi21IvvODJoO61MtVbLFApMDXQ1Zs=I will maintain packages / modules that are listed in ./nur.nix.
Other packages are free to use as well, but I won't constantly maintain them.