···1414let
1515 lib = pkgs.lib;
16161717+ docbook_xsl_ns = pkgs.docbook-xsl-ns.override {
1818+ withManOptDedupPatch = true;
1919+ };
2020+1721 # We need to strip references to /nix/store/* from options,
1822 # including any `extraSources` if some modules came from elsewhere,
1923 # or else the build will fail.