Package: vtk6

• 6.3.0+dfsg2-8.1 (main) [bullseye]
• 6.3.0+dfsg2-2 (main) [buster]
• 6.3.0+dfsg1-5 (main) [stretch]
• 6.1.0+dfsg2-6 (main) [jessie, jessie-kfreebsd]