tools/ci.sh: Update Unix/x86 target to Ubuntu 24.04 LTS.

This commit updates the Unix/x86 target's environment to use the latest
available LTS version of Ubuntu Linux (24.04).

Since the new OS updated some key components used in the CI build
process, a few modifications have been made to the setup and build
procedure.  The new OS introduces a CPython version that is known to not
be compatible with a subset of settrace tests, so even though the OS is
updated, an older version of CPython is installed as part of the image
provisioning process.

Signed-off-by: Alessandro Gatti <a.gatti@frob.it>

Author: agatti

.github/workflows/ports_unix.yml

@@ -103,9 +103,14 @@ jobs:
       run: tests/run-tests.py --print-failures
 
   coverage_32bit:
-    runs-on: ubuntu-22.04 # use 22.04 to get libffi-dev:i386
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v6
+    - uses: actions/setup-python@v6
+      # Python 3.12 is the default for ubuntu-24.04, but that has compatibility issues with settrace tests.
+      # Can remove this step when ubuntu-latest uses a more recent Python 3.x as the default.
+      with:
+        python-version: '3.11'
     - name: Install packages
       run: tools/ci.sh unix_32bit_setup
     - name: Build
@@ -121,9 +126,14 @@ jobs:
       run: tests/run-tests.py --print-failures
 
   nanbox:
-    runs-on: ubuntu-22.04 # use 22.04 to get libffi-dev:i386
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v6
+    - uses: actions/setup-python@v6
+      # Python 3.12 is the default for ubuntu-24.04, but that has compatibility issues with settrace tests.
+      # Can remove this step when ubuntu-latest uses a more recent Python 3.x as the default.
+      with:
+        python-version: '3.11'
     - name: Install packages
       run: tools/ci.sh unix_32bit_setup
     - name: Build
@@ -135,9 +145,14 @@ jobs:
       run: tests/run-tests.py --print-failures
 
   longlong:
-    runs-on: ubuntu-22.04 # use 22.04 to get libffi-dev:i386
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v6
+    - uses: actions/setup-python@v6
+      # Python 3.12 is the default for ubuntu-24.04, but that has compatibility issues with settrace tests.
+      # Can remove this step when ubuntu-latest uses a more recent Python 3.x as the default.
+      with:
+        python-version: '3.11'
     - name: Install packages
       run: tools/ci.sh unix_32bit_setup
     - name: Build
@@ -218,9 +233,14 @@ jobs:
       run: tests/run-tests.py --print-failures
 
   repr_b:
-    runs-on: ubuntu-22.04 # use 22.04 to get libffi-dev:i386
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v6
+    - uses: actions/setup-python@v6
+      # Python 3.12 is the default for ubuntu-24.04, but that has compatibility issues with settrace tests.
+      # Can remove this step when ubuntu-latest uses a more recent Python 3.x as the default.
+      with:
+        python-version: '3.11'
     - name: Install packages
       run: tools/ci.sh unix_32bit_setup
     - name: Build

tools/ci.sh

@@ -777,9 +777,8 @@ function ci_unix_32bit_setup {
     sudo dpkg --add-architecture i386
     sudo apt-get update
     sudo apt-get install gcc-multilib g++-multilib libffi-dev:i386
-    sudo pip3 install setuptools
-    sudo pip3 install pyelftools
-    sudo pip3 install ar
+    python -m pip install pyelftools
+    python -m pip install ar
     gcc --version
     python3 --version
 }