After building a fresh deb from current Git master (9b62dac4bcf62f3a1f76ec5a7ed5a90db16ea1c8) :

    $ ikiwiki --setup ~/ikiwiki.setup  --rebuild
    Undefined subroutine &IkiWiki::refresh called at /usr/share/perl5/IkiWiki/Setup.pm line 113.

done, it just needed "require IkiWiki::Render" before it started rendering. --smcv