fix travis

scripts/runtests.sh

@@ -18,7 +18,7 @@ for answers in examples/answers*.yaml; do
         exit 1
     fi
 done
-TTY=$(tty)
+TTY=$(tty || true)
 timeout --foreground 60 sh -c "LANG=C.UTF-8 python3 -m subiquity.cmd.tui --autoinstall examples/autoinstall.yaml \
                                --dry-run --machine-config examples/simple.json \
                                --kernel-cmdline 'autoinstall console=\"${TTY#/dev/}\"'"

subiquity/core.py

@@ -188,7 +188,8 @@ class Subiquity(Application):
         try:
             our_tty = os.ttyname(0)
         except OSError:
-            our_tty = "not a tty"
+            # This is a gross hack for testing in travis.
+            our_tty = "/dev/not a tty"
         if not self.interactive() and our_tty != primary_tty:
             print(
                 _("the installer running on {} will perform the "