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m →Setup: formatting fixes for consistency across wiki: 1) don't nest `systemPackages` in `environment` 2) use <syntaxhighlight lang=console> and '$' prefix for shell commands
 
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[https://www.qemu.org/ QEMU] is a generic and open source machine emulator and virtualizer.
[https://www.qemu.org/ QEMU] is a generic and open source machine emulator and virtualizer.
For running virtual machines as a services see [[Libvirt]].


== Setup ==
== Setup ==
To install the main QEMU program system-wide, add the following to your <code>configuration.nix</code>:<syntaxhighlight lang=nix>
To install the main QEMU program system-wide, add the following to your <code>configuration.nix</code>:<syntaxhighlight lang=nix>
  environment = {
environment.systemPackages = [
    systemPackages = [ pkgs.qemu ];
  pkgs.qemu
  };
];
</syntaxhighlight>
</syntaxhighlight>


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https://github.com/quickemu-project/quickemu
https://github.com/quickemu-project/quickemu


<syntaxhighlight lang=bash>
<syntaxhighlight lang=console>
quickget windows 11
$ quickget windows 11
quickemu --vm windows-11.conf
$ quickemu --vm windows-11.conf
</syntaxhighlight>
</syntaxhighlight>


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   outputs = { self, nixpkgs }:
   outputs = { self, nixpkgs }:
   let
   let
     pkgs = import nixpkgs { system = "x86_64-linux"; };
     # Put your actual system of your machine here. In VM terms it is the "HOST"
     pkgsAarch64 = import nixpkgs { system = "aarch64-linux"; };
    buildPlatform = "x86_64-linux";
 
    # Put the system you want to emulate here. In VM terms it is the "GUEST"
    hostPlatform = "aarch64-linux";
 
     pkgs = import nixpkgs { system = buildPlatform; };


     iso = (pkgsAarch64.nixos {
     vmConfig = (pkgs.nixos {
       imports = [ "${nixpkgs}/nixos/modules/installer/cd-dvd/installation-cd-base.nix" ];
       imports = [ "${nixpkgs}/nixos/modules/installer/cd-dvd/installation-cd-base.nix" ];
     }).config.system.build.isoImage;
      nixpkgs = { inherit buildPlatform hostPlatform; };
     });
    vmIso = vmConfig.config.system.build.isoImage;
    vmPkgs = vmConfig.pkgs;


     vmScript = pkgs.writeScriptBin "run-nixos-vm" ''
     vmScript = pkgs.writeShellScriptBin "run-nixos-vm" ''
      #!${pkgs.runtimeShell}
       ${pkgs.qemu}/bin/qemu-system-aarch64 \
       ${pkgs.qemu}/bin/qemu-system-aarch64 \
         -machine virt,gic-version=max \
         -machine virt,gic-version=max \
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         -m 2G \
         -m 2G \
         -smp 4 \
         -smp 4 \
         -drive file=$(echo ${iso}/iso/*.iso),format=raw,readonly=on \
         -drive file=$(echo ${vmIso}/iso/*.iso),format=raw,readonly=on \
         -nographic \
         -nographic \
         -bios ${pkgsAarch64.OVMF.fd}/FV/QEMU_EFI.fd
         -bios ${vmPkgs.OVMF.fd}/FV/OVMF.fd
     '';
     '';


   in {
   in {
     defaultPackage.x86_64-linux = vmScript;
     packages.x86_64-linux.default = vmScript;
   };
   };
}
}


</syntaxhighlight>Alternatively a different iso file can be specified in the drive-parameter, for example for Ubuntu Server ARM64.  
 
</syntaxhighlight>
 
Alternatively a different iso file can be specified in the drive-parameter, for example for Ubuntu Server ARM64.
 
Make sure to adjust the 2 toplevel variables to set up the cross compilation correctly. If your target is not AARCH64, you have to use the correct qemu binay in the start script.
 
[[Category:Virtualization]]
[[Category:Virtualization]]
Retrieved from "https://wiki.nixos.org/wiki/QEMU"