68 lines
2.2 KiB
Nix
68 lines
2.2 KiB
Nix
inputs: let
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inherit (inputs) self;
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inherit
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(inputs.nixpkgs.lib)
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concatMapAttrs
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filterAttrs
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flip
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genAttrs
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mapAttrs'
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nameValuePair
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nixosSystem
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;
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# Creates a new nixosSystem with the correct specialArgs, pkgs and name definition
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mkHost = {minimal}: name: let
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pkgs = self.pkgs.x86_64-linux;
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in
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nixosSystem {
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specialArgs = {
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# Use the correct instance lib that has our overlays
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inherit (pkgs) lib;
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inherit (self) nodes stateVersion;
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inherit inputs minimal;
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};
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modules = [
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{
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# We cannot force the package set via nixpkgs.pkgs and
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# inputs.nixpkgs.nixosModules.readOnlyPkgs, since some nixosModules
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# like nixseparatedebuginfod depend on adding packages via nixpkgs.overlays.
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# So we just mimic the options and overlays defined by the passed pkgs set.
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nixpkgs.overlays = pkgs.overlays;
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nixpkgs.config = pkgs.config;
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node.name = name;
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node.secretsDir = ../. + "/hosts/${name}/secrets";
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}
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../hosts/${name}
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];
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};
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# Load the list of hosts that this flake defines, which
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# associates the minimum amount of metadata that is necessary
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# to instanciate hosts correctly.
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hosts = builtins.attrNames (filterAttrs (_: type: type == "directory") (builtins.readDir ../hosts));
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# Process each nixosHosts declaration and generatea nixosSystem definitions
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nixosConfigurations = genAttrs hosts (mkHost {minimal = false;});
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minimalConfigurations = genAttrs hosts (mkHost {minimal = true;});
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# True NixOS nodes can define additional guest nodes that are built
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# together with it. We collect all defined guests from each node here
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# to allow accessing any node via the unified attribute `nodes`.
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guestConfigurations = flip concatMapAttrs self.nixosConfigurations (_: node:
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flip mapAttrs' (node.config.guests or {}) (
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guestName: guestDef:
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nameValuePair guestDef.nodeName (
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if guestDef.backend == "microvm"
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then node.config.microvm.vms.${guestName}.config
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else node.config.containers.${guestName}.nixosConfiguration
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)
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));
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in {
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inherit
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hosts
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nixosConfigurations
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minimalConfigurations
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guestConfigurations
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;
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}
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