27 lines
675 B
Nix
27 lines
675 B
Nix
{ lib, machineDir, ... }:
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let
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allMachineNames = lib.mapAttrsToList (name: _: name) (builtins.readDir machineDir);
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getFactPath = fact: machine:
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"${machineDir}/${machine}/facts/${fact}";
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readFact = fact: machine:
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let
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path = getFactPath fact machine;
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in
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if builtins.pathExists path then
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builtins.readFile path
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else
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null;
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readFactFromAllMachines = fact:
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let
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machines = allMachineNames;
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facts = lib.genAttrs machines (readFact fact);
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filteredFacts = lib.filterAttrs (_machine: fact: fact != null) facts;
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in
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filteredFacts;
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in
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{ inherit allMachineNames getFactPath readFact readFactFromAllMachines; }
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