{ ... }:
let
  nosv = <nosv>;
  ovni = <ovni>;
  nodes = <nodes>;

  getVersion = x: toString (x.shortRev or x.dirtyShortRev or x.lastModified or "unknown");

  pkgs = (
    import <bscpkgs> {
      overlays = [
        (final: prev: {
          nosv = prev.nosv.overrideAttrs (old: {
            src = nosv;
            version = getVersion nosv;
          });

          ovni = prev.ovni.overrideAttrs (old: {
            src = ovni;
            version = getVersion ovni;
          });

          nodes = prev.nodes.overrideAttrs (old: {
            src = nodes;
            version = getVersion nodes;
          });
        })
      ];
    }
  );
in
{
  pkgs = {
    inherit (pkgs)
      nosv
      ovni
      nodes
      ;
  };
}