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f9b05ac1fe
This makes it possible to build several NixOS systems that use different nixpkgs in the same nix-build invocation. Today, you can't do that since the <nixpkgs> path reference is hard-coded in lib/eval-config.nix.
47 lines
1 KiB
Nix
47 lines
1 KiB
Nix
{ configuration ? import ./lib/from-env.nix "NIXOS_CONFIG" <nixos-config>
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, system ? builtins.currentSystem
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, nixpkgs ? <nixpkgs>
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}:
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let
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eval = import ./lib/eval-config.nix {
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inherit system nixpkgs;
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modules = [ configuration ];
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};
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inherit (eval) config pkgs;
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# This is for `nixos-rebuild build-vm'.
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vmConfig = (import ./lib/eval-config.nix {
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inherit system nixpkgs;
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modules = [ configuration ./modules/virtualisation/qemu-vm.nix ];
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}).config;
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# This is for `nixos-rebuild build-vm-with-bootloader'.
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vmWithBootLoaderConfig = (import ./lib/eval-config.nix {
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inherit system nixpkgs;
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modules =
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[ configuration
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./modules/virtualisation/qemu-vm.nix
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{ virtualisation.useBootLoader = true; }
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];
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}).config;
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in
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{
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inherit eval config;
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system = config.system.build.toplevel;
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vm = vmConfig.system.build.vm;
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vmWithBootLoader = vmWithBootLoaderConfig.system.build.vm;
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# The following are used by nixos-rebuild.
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nixFallback = pkgs.nixUnstable;
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tests = config.tests;
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}
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