36 lines
708 B
Nix
36 lines
708 B
Nix
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{ lib, writeErofs }:
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{
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layers,
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labelLower ? "base",
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labelUpper ? "image",
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}:
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let
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inherit (lib.lists) toList;
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nLayers = builtins.length layers;
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mkLabel = seq: if seq + 1 < nLayers then labelLower + toString seq else labelUpper;
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f =
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{
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roots ? [ ],
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layers ? [ ],
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seq ? 0,
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}:
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newRoots: {
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seq = seq + 1;
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roots = roots ++ (toList newRoots);
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layers = layers ++ [
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(writeErofs ({
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roots = toList newRoots;
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rootsExclude = roots;
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passthru = {
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inherit seq;
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label = mkLabel seq;
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};
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label = mkLabel seq;
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}))
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];
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};
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acc = lib.foldl f { } layers;
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in
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acc.layers
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