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with builtins;
rec {
splitLines = s: filter (x: !isList x) (split "\n" s);
concatStrings = concatStringsSep "";
# FIXME: O(n^2)
unique = foldl' (acc: e: if elem e acc then acc else acc ++ [ e ]) [];
nameValuePair = name: value: { inherit name value; };
filterAttrs = pred: set:
listToAttrs (concatMap (name: let v = set.${name}; in if pred name v then [(nameValuePair name v)] else []) (attrNames set));
}
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