depot/third_party/nixpkgs/nixos/modules/installer/tools/nixos-build-vms/build-vms.nix

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{ system ? builtins.currentSystem
, config ? {}
, networkExpr
}:
let
nodes = builtins.mapAttrs (vm: module: {
_file = "${networkExpr}@node-${vm}";
imports = [ module ];
}) (import networkExpr);
pkgs = import ../../../../.. { inherit system config; };
testing = import ../../../../lib/testing-python.nix {
inherit system pkgs;
};
interactiveDriver = (testing.makeTest { inherit nodes; testScript = "start_all(); join_all();"; }).driverInteractive;
in
pkgs.runCommand "nixos-build-vms" { nativeBuildInputs = [ pkgs.makeWrapper ]; } ''
mkdir -p $out/bin
ln -s ${interactiveDriver}/bin/nixos-test-driver $out/bin/nixos-test-driver
ln -s ${interactiveDriver}/bin/nixos-test-driver $out/bin/nixos-run-vms
wrapProgram $out/bin/nixos-test-driver \
--add-flags "--interactive"
''