C:    GVBINDIR=<pango-free plugins> dot -Ksfdp -Tsvg repro.gv
port: graphviz-pure -Ksfdp -Tsvg repro.gv

neato variant (repro-neato.gv):
C:    GVBINDIR=<pango-free plugins> dot -Kneato -Tsvg repro.gv
port: graphviz-pure -Kneato -Tsvg repro.gv