Hi, I don't know why Rob reopened and Ivo marked Stretch this graphviz guile-1.8 to guile-2.0 transition bug. The graphviz package already transitioned to guile-2.0 and the mentioned build dependency on libltdl-dev [1] doesn't change anything. I'm going to upload a package version where I've removed it. But it comes from a separate package (libtool) and guile-2.0-dev build dependency will pull that it in anyway: $ apt-cache show guile-2.0-dev | grep Depends:
Regards, Laszlo/GCS [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=746012#17
