Just to avoid confusion:
I have enabled selective installation of packages from bionic-proposed as discussed in <https://wiki.ubuntu.com/Testing/EnableProposed>. I.e. there's a step missing:
2.5. Add file `/etc/apt/preferences.d/proposed-updates` with contents
Package: * Pin: release a=bionic-proposed Pin-Priority: 400
Just to avoid confusion:
I have enabled selective installation of packages from bionic-proposed as discussed in <https:/ /wiki.ubuntu. com/Testing/ EnableProposed>. I.e. there's a step missing:
2.5. Add file `/etc/apt/ preferences. d/proposed- updates` with contents
Package: *
Pin: release a=bionic-proposed
Pin-Priority: 400