6 export DEBIAN_FRONTEND
=noninteractive
12 # Upstream LLVM package repository
13 apt-key add .gitlab-ci
/container
/llvm-snapshot.gpg.key
14 echo "deb https://apt.llvm.org/buster/ llvm-toolchain-buster-9 main" >/etc
/apt
/sources.list.d
/llvm9.list
16 sed -i -e 's/http:\/\/deb/https:\/\/deb/g' /etc
/apt
/sources.list
17 echo 'deb https://deb.debian.org/debian testing main' >/etc
/apt
/sources.list.d
/testing.list
21 # Don't use newer packages from testing by default
22 cat >/etc
/apt
/preferences
<<EOF
24 Pin: release a=testing
28 apt-get dist-upgrade
-y
30 apt-get
install -y --no-remove \
69 apt-get autoremove
-y --purge