Hi all, I while ago here I asked about using nix with drone.io (a CI system which uses docker), to deal with push based tests. I previously reported back with a solution with gitlab, but I did end up with a workable (not perfect) solution for drone. On the 'drone agent' machine run this once: # docker volume create nix # docker run --rm -v nix:/newnix nixos/nix cp -a /nix/store /nix/var /newnix in the .drone.yml files: pipeline: build: image: nixos/nix commands: ... volumes: - nix:/nix/ And whenever you want to update nixchannel: # docker run -v nix:/nix/ --rm -ti nixos/nix nix-channel --update This will share the /nix directory with every build, so rebuild (and downloads!) are kept to a minimum. Maybe it helps someone. Thanks! Harmen