Thanks for looking into this. You’re right – it looks like Dafny’s having some trouble linking against Boogie. The Dafny build process statically links Boogie into Dafny; that’s why
cp -a /usr/lib/boogie/* Binaries mkdir -p Source/Dafny/bin/Checked cp -a /usr/lib/boogie/* Source/Dafny/bin/Checked appears before the `xbuild` command. However, Boogie builds fine and is listed as a `Build-Depends-Indep` of Dafny, so I’m not entirely sure what’s going on. If you’d like to experiment with this, you can grab the relevant source from https://benjamin.barenblat.name/git/debian-boogie.git https://benjamin.barenblat.name/git/debian-dafny.git Otherwise, I’ll try to have a look this weekend.