Out of curiosity, I searched and did not find any flex/bison files in vte sources. Then I ran a test of building x11-toolkits/vte after removing the bison argument in the USE variable (having removed bison from my system beforehand) and it build and installed fine. Fix: I guess we can remove the bison flag from vte port requirements. How-To-Repeat: -
Responsible Changed From-To: freebsd-ports-bugs->gnome Over to maintainer (via the GNATS Auto Assign Tool)
Closing the PR since the port is no longer using bison.