My NixOS and Home Manager configurations
update microvm config
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modules/microvm.nix
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modules/microvm.nix
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{ inputs, ... }:
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{
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styx.microvm._.host.nixos.imports = [ inputs.microvm.nixosModules.host ];
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# Assign host-side IP on the tap interface created by microvm.nix
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styx.microvm._.host.nixos.systemd.network.networks."10-microvms" = {
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matchConfig.Name = "tap0";
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address = [ "10.4.4.1/30" ];
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networkConfig.IPv4Forwarding = true;
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};
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# NAT the VM traffic — no oifname so it works on any host interface
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styx.microvm._.host.nixos.networking.nftables.ruleset = ''
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table ip nat {
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chain postrouting {
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type nat hook postrouting priority srcnat; policy accept;
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ip saddr 10.4.4.0/30 masquerade
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}
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}
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'';
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}