By including the microvm module a set of NixOS options is made
available for customization. These are the most important ones:
| Option | Purpose |
|---|---|
microvm.hypervisor |
Hypervisor to use by default in microvm.declaredRunner |
microvm.vcpu |
Number of Virtual CPU cores |
microvm.mem |
RAM allocation in MB |
microvm.interfaces |
Network interfaces |
microvm.volumes |
Block device images |
microvm.shares |
Shared filesystem directories |
microvm.devices |
PCI/USB devices for host-to-vm passthrough |
microvm.socket |
Control socket for the Hypervisor so that a MicroVM can be shutdown cleanly |
microvm.user |
(qemu only) User account which Qemu will switch to when started as root |
microvm.forwardPorts |
(qemu user-networking only) TCP/UDP port forwarding |
microvm.kernelParams |
Like boot.kernelParams but will not end up in system.build.toplevel, saving you rebuilds |
microvm.storeOnDisk |
Enables the store on the boot squashfs even in the presence of a share with the host's /nix/store |
microvm.writableStoreOverlay |
Optional string of the path where all writes to /nix/store should go to. |
See the options declarations for a full reference.