{ flake, ... }: let inherit (flake.config.people) user0; serviceCfg = { name = "minecraft"; }; in { minecraftVM = { user, ip, mac, userMac, ssh, port, mnt, config, whitelist, worldNumber, }: { microvm.vms = { "${serviceCfg.name}-${user}" = { autostart = true; restartIfChanged = true; config = { system.stateVersion = "24.05"; time.timeZone = "America/Winnipeg"; users.users.root.openssh.authorizedKeys.keys = flake.config.people.users.${user0}.sshKeys; services = { minecraft-server = { enable = true; eula = true; openFirewall = true; declarative = true; serverProperties = { "rcon.password" = "/etc/${serviceCfg.name}-secrets/${user}-world${worldNumber}"; server-port = port; } // config; whitelist = whitelist; }; openssh = { enable = true; settings = { PasswordAuthentication = false; PermitRootLogin = "prohibit-password"; }; }; }; networking.firewall.allowedTCPPorts = [ 22 port ]; systemd = { services = { "${serviceCfg.name}-copy-secrets" = { description = "Copy secrets from virtiofs to local filesystem"; before = [ "minecraft-server.service" ]; requiredBy = [ "minecraft-server.service" ]; serviceConfig = { Type = "oneshot"; RemainAfterExit = true; }; script = '' mkdir -p /etc/${serviceCfg.name}-secrets cp /run/secrets/${user}-world${worldNumber} /etc/${serviceCfg.name}-secrets/${user}-world${worldNumber} chmod 755 /etc/${serviceCfg.name}-secrets chmod 644 /etc/${serviceCfg.name}-secrets/* ''; }; systemd-networkd.wantedBy = [ "multi-user.target" ]; }; network = { enable = true; networks."20-lan" = { matchConfig.Name = "enp0s5"; addresses = [ { Address = "${ip}/24"; } ]; routes = [ { Destination = "0.0.0.0/0"; Gateway = "192.168.50.1"; } ]; dns = [ "1.1.1.1" "8.8.8.8" ]; }; }; tmpfiles.rules = [ "d /var/lib/${serviceCfg.name} 0755 ${serviceCfg.name} ${serviceCfg.name} -" ]; }; microvm = { vcpu = 4; mem = 1024 * 4; hypervisor = "qemu"; interfaces = [ { type = "tap"; id = "vm-mc${worldNumber}-${user}"; mac = mac; } { type = "user"; id = "vmuser-craft"; mac = userMac; } ]; forwardPorts = [ { from = "host"; host.port = ssh; guest.port = 22; } ]; shares = [ { mountPoint = "/nix/.ro-store"; proto = "virtiofs"; source = "/nix/store"; tag = "read_only_nix_store"; } { mountPoint = "/var/lib/${serviceCfg.name}"; proto = "virtiofs"; source = "${mnt}/${serviceCfg.name}/world${worldNumber}"; tag = "${serviceCfg.name}_${user}_data"; } { mountPoint = "/run/secrets"; proto = "virtiofs"; source = "/run/secrets/${serviceCfg.name}"; tag = "host_secrets"; } ]; }; }; }; }; networking.firewall.allowedTCPPorts = [ port ]; systemd.tmpfiles.rules = [ "d ${mnt}/${serviceCfg.name} 0751 microvm wheel - -" ]; sops.secrets = { "${serviceCfg.name}/${user}-world${worldNumber}" = { owner = "root"; mode = "0600"; }; }; }; }