ci: Update to Ubuntu 22.04 LTS

Note: The LTS image is still in beta (actions/runner-images#5490).

In Jammy, we have recent versions of zypper and dnf packaged so we
don't have to build them from source anymore. Also, sq is packaged
so we don't have to build sq from source anymore either.

The setup-github-actions.sh script is renamed to setup-pacman.sh
and it's reduced to only install the dependencies necessary to
build pacman and archlinux-keyring.

All other dependencies are moved to action.yaml and the action
mkosi.default script.

Author: DaanDeMeyer

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ on:
 
 jobs:
   unit-test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     concurrency:
       group: ${{ github.workflow }}-${{ github.ref }}
       cancel-in-progress: true
@@ -97,7 +97,7 @@ jobs:
         bash -c 'shopt -s globstar; shellcheck **/*.sh'
 
   integration-test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     needs: unit-test
     concurrency:
       group: ${{ github.workflow }}-${{ matrix.distro }}-${{ matrix.format }}-${{ github.ref }}

action.yaml

@@ -9,14 +9,27 @@ runs:
     uses: actions/cache@v3
     with:
       path: build
-      key: ${{ runner.os }}-${{ hashFiles('action/setup-github-actions.sh') }}
+      key: ${{ runner.os }}-${{ hashFiles('action/setup-pacman.sh') }}
 
   - name: Dependencies
     shell: bash
     run: |
+      sudo apt-get update
+      sudo apt-get install --assume-yes --no-install-recommends \
+        debootstrap \
+        zypper \
+        dnf \
+        systemd-container \
+        qemu-system-x86 \
+        ovmf \
+        e2fsprogs \
+        xfsprogs \
+        squashfs-tools \
+        btrfs-progs
+
       mkdir -p $BUILDDIR
 
-      sudo -E ${{ github.action_path }}/action/setup-github-actions.sh
+      sudo -E ${{ github.action_path }}/action/setup-pacman.sh
       sudo chown -R $USER: $BUILDDIR
 
       sudo pacman-key --init

action/mkosi.default

@@ -1,56 +1,25 @@
 [Distribution]
 Distribution=ubuntu
-Release=focal
-
-[Output]
-HostonlyInitrd=yes
+Release=jammy
 
 [Content]
-Cache=../mkosi.cache/ubuntu~focal
-BuildScript=setup-github-actions.sh
+Cache=../mkosi.cache/ubuntu~jammy
+BuildScript=setup-pacman.sh
 WithNetwork=yes
 Repositories=main,universe
 Autologin=yes
 Bootable=yes
 Password=
-Packages=bzip2
-         clang
-         debootstrap
-         e2fsprogs
-         git
-         libarchive13
-         libcap2
-         libcppunit-1.15-0
-         libcurl4
-         libdb5.3
-         libgcrypt20
-         libglib2.0.0
-         libgpgme11
-         libjson-c4
-         liblua5.3-0
-         liblzma5
-         libmagic1
-         libpopt0
-         libpython3.8
-         libsmartcols1
-         libsqlite3-0
-         libssl1.1
-         libtool
-         libxml2
-         libyaml-0-2
-         libzstd1
-         python-is-python3
-         python3
-         python3-distutils
-         python3-gpg
-         python3-setuptools
-         rustc
-         squashfs-tools
+Packages=debootstrap
+         zypper
+         dnf
          systemd-container
+         qemu-system-x86
+         ovmf
+         squashfs-tools
+         e2fsprogs
          xfsprogs
-         zlib1g
-         zypper
-
+         btrfs-progs
 
 [Validation]
 QemuHeadless=yes