don't remove essential packages

Author: killermoehre

.github/workflows/00-setup-mkosi.yaml

@@ -12,8 +12,8 @@ jobs:
         env:
           DEBIAN_FRONTEND: noninteractive
         run: |
-          declare -a packages
-          while read -r status package _; do if [[ "$status" == "ii" ]]; then packages+=("$package"); fi; done < <(dpkg-query -l)
+          declare -a packages=()
+          while read -r package essential; do if [[ "$essential" != 'yes' ]]: then packages+=("$package"); fi; done < <(dpkg-query -Wf '${Package} ${Essential}\n')
           sudo apt-get --assume-yes purge "${packages[@]}"
           sudo apt-get --assume-yes update
           sudo apt-get --assume-yes dist-upgrade