I tried purging and reinstalling: sudo apt remove guile-2.0-dev sudo apt purge guile-2.0 guile-2.0-libs:amd64 tried running 3.2 debian package and no go -- needs guile2.0 sudo apt install guile-2.0-dev guile-2.0-libs:amd64 So having guile 2.0 and 2.2 both installed must not be a problem for compiling 3.2 gnucash.