buildRustCrateHelpers.nix


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{ lib, buildPlatform }: {
  kernel = buildPlatform.parsed.kernel.name;
  abi = buildPlatform.parsed.abi.name;
  include = includedFiles: src: builtins.filterSource (path: type:
    lib.lists.any (f:
      let p = toString (src + ("/" + f)); in
      (path == p) || (type == "directory" && lib.strings.hasPrefix path p)
    ) includedFiles
  ) src;
  updateFeatures = f: up: functions: builtins.deepSeq f (lib.lists.foldl' (features: fun: fun features) (lib.attrsets.recursiveUpdate f up) functions);
  mapFeatures = features: map (fun: fun { features = features; });
  mkFeatures = feat: lib.lists.foldl (features: featureName:
    if feat.${featureName} or false then
      [ featureName ] ++ features
    else
      features
    ) [] (builtins.attrNames feat);
}