102 lines
2.4 KiB
Nix
102 lines
2.4 KiB
Nix
let
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sources = import ./npins;
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lib = import (sources.nix-lib + "/src/trivial.nix");
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patch = import sources.nix-patches { patchFile = ./patches; };
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nodes' = import ./meta/nodes.nix;
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nodes = builtins.attrNames nodes';
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mkNode = node: {
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# Import the base configuration for each node
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imports = builtins.map (lib.mkRel (./machines/${node})) [
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"_configuration.nix"
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"_hardware-configuration.nix"
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];
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};
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nixpkgs' = import ./meta/nixpkgs.nix;
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# All supported nixpkgs versions, instanciated
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nixpkgs = lib.mapSingleFuse mkNixpkgs nixpkgs'.supported;
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# Get the configured nixos version for the node,
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# defaulting to the one defined in meta/nixpkgs
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version = node: nodes'.${node}.nixpkgs or nixpkgs'.default;
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# Builds a patched version of nixpkgs, only as the source
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mkNixpkgs' =
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v:
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let
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version = "nixos-${v}";
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in
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patch.mkNixpkgsSrc {
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src = sources.${version};
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inherit version;
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};
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# Instanciates the required nixpkgs version
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mkNixpkgs = version: import (mkNixpkgs' version) { };
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###
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# Function to create arguments based on the node
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#
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mkArgs = node: rec {
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lib = import sources.nix-lib {
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inherit (nixpkgs.${version node}) lib;
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keysRoot = ./keys;
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};
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meta = (import ./meta) lib;
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nodeMeta = meta.nodes.${node};
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};
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in
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{
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meta = {
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nodeNixpkgs = lib.mapSingleFuse (n: nixpkgs.${version n}) nodes;
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specialArgs = {
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inherit nixpkgs sources;
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};
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nodeSpecialArgs = lib.mapSingleFuse mkArgs nodes;
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};
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defaults =
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{ name, nodeMeta, ... }:
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{
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# Import the default modules
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imports = [ ./modules ];
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# Include default secrets
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age-secrets.sources = [ ./machines/${name}/secrets ];
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# Deployment config is specified in meta.nodes.${node}.deployment
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inherit (nodeMeta) deployment;
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nix = {
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# Set NIX_PATH to the patched version of nixpkgs
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nixPath = [ "nixpkgs=${mkNixpkgs' (version name)}" ];
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optimise.automatic = true;
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gc = {
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automatic = true;
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dates = "weekly";
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options = "--delete-older-than 7d";
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};
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};
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# Allow unfree packages
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nixpkgs.config.allowUnfree = true;
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# Use the stateVersion declared in the metadata
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system = {
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inherit (nodeMeta) stateVersion;
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};
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};
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}
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// (lib.mapSingleFuse mkNode nodes)
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