https://github.com/serokell/deploy-rs

sample
https://github.com/serokell/deploy
https://github.com/serokell/deploy/blob/master/deploy.sh

2020
https://serokell.io/blog/deploy-rs
    https://www.reddit.com/r/NixOS/comments/k0utpw/our_new_nix_deployment_tool_deployrs/

check:

{
    checks = builtins.mapAttrs (system: deployLib: deployLib.deployChecks self.deploy) deploy-rs.lib;
}