nixpkgs/pkgs/build-support/substitute-files/substitute-all-files.nix

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{ stdenv }:
args:
stdenv.mkDerivation ({
name = if args ? name then args.name else baseNameOf (toString args.src);
builder = with stdenv.lib; builtins.toFile "builder.sh" ''
source $stdenv/setup
set -o pipefail
eval "$preInstall"
args=
pushd "$src"
echo -ne "${concatStringsSep "\\0" args.files}" | xargs -0 -n1 -I {} -- find {} -type f -print0 | while read -d "" line; do
mkdir -p "$out/$(dirname "$line")"
substituteAll "$line" "$out/$line"
done
popd
eval "$postInstall"
'';
preferLocalBuild = true;
} // args)