Add lib.generators.toPreserves
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040294dbf2
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079be99183
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result
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result-*
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@ -4,11 +4,15 @@
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inputs.rust.url = "github:oxalica/rust-overlay";
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outputs = { self, nixpkgs, rust }:
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let forEachSystem = nixpkgs.lib.genAttrs [ "aarch64-linux" "x86_64-linux" ];
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let
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forEachSystem = nixpkgs.lib.genAttrs [ "aarch64-linux" "x86_64-linux" ];
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libOverlay = import ./lib.nix;
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in {
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lib = nixpkgs.lib.extend libOverlay;
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overlay = final: prev:
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with final; {
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lib = lib.extend libOverlay;
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syndicate-rs = callPackage ./syndicate-rs {
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rust = rust-bin.nightly.latest.default;
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};
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@ -0,0 +1,27 @@
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final: prev:
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let lib = final;
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in with lib; {
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generators = with final.generators;
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prev.generators // {
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toPreserves = { }@args:
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v:
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let concatItems = lib.strings.concatStringsSep " ";
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in if isAttrs v then
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"{ ${
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concatItems (lib.attrsets.mapAttrsToList
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(key: val: "${key}: ${toPreserves args val}") v)
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} }"
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else if isList v then
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"[ ${concatItems (map (toPreserves args) v)} ]"
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else if isBool v then
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(if v then "#t" else "#f")
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else if isFunction v then
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abort "generators.toPreserves: cannot convert a function to Preserves"
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else if isNull v then
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"null"
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else
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builtins.toJSON v;
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};
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}
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