···3434 concatStringsSep = separator: list:
3535 concatStrings (intersperse separator list);
36363737+ concatMapStringsSep = sep: f: list: concatStringsSep sep (map f list);
3838+ concatImapStringsSep = sep: f: list: concatStringsSep sep (lib.imap f list);
3939+37403841 # Construct a Unix-style search path consisting of each `subDir"
3942 # directory of the given list of packages. For example,