67 lines
1.7 KiB
Nix
67 lines
1.7 KiB
Nix
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{
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config,
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lib,
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nodes,
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...
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}: let
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inherit
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(lib)
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attrNames
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concatMap
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concatStringsSep
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foldl'
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getAttrFromPath
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mkMerge
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mkOption
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mkOptionType
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optionals
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recursiveUpdate
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setAttrByPath
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types
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;
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nodeName = config.node.name;
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mkForwardedOption = path:
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mkOption {
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type = mkOptionType {
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name = "Same type that the receiving option `${concatStringsSep "." path}` normally accepts.";
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merge = _loc: defs:
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builtins.filter
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(x: builtins.isAttrs x -> ((x._type or "") != "__distributed_config_empty"))
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(map (x: x.value) defs);
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};
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default = {_type = "__distributed_config_empty";};
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description = ''
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Anything specified here will be forwarded to `${concatStringsSep "." path}`
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on the given node. Forwarding happens as-is to the raw values,
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so validity can only be checked on the receiving node.
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'';
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};
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forwardedOptions = [
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["age" "secrets"]
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["services" "maddy" "ensureCredentials"]
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];
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attrsForEachOption = f: (foldl' (acc: path: recursiveUpdate acc (setAttrByPath path (f path))) {} forwardedOptions);
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in {
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options.nodes = mkOption {
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description = "Options forwareded to the given node.";
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default = {};
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type = types.attrsOf (types.submodule {
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options = attrsForEachOption mkForwardedOption;
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});
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};
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config = let
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mergeConfigFromOthers = let
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getConfig = path: otherNode: let
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cfg = nodes.${otherNode}.config.nodes.${nodeName} or null;
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in
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optionals (cfg != null) (getAttrFromPath path cfg);
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in
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path: mkMerge (concatMap (getConfig path) (attrNames nodes));
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in
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attrsForEachOption mergeConfigFromOthers;
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}
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