Move to Ubuntu >= 24.04 and upgrade abseil version

.github/workflows/actions.yml

@@ -25,19 +25,18 @@ jobs:
           OPEN_SPIEL_ABSL_VERSION: "20250127.1"
           OPEN_SPIEL_BUILD_WITH_ORTOOLS: "OFF"
           OPEN_SPIEL_BUILD_WITH_ORTOOLS_DOWNLOAD_URL: ""
-        - os: ubuntu-22.04
+        - os: ubuntu-24.04
           OS_PYTHON_VERSION: "3.11"
           DEFAULT_OPTIONAL_DEPENDENCY: "ON"
           BUILD_SHARED_LIB: "OFF"
-          OPEN_SPIEL_ABSL_VERSION: "20230125.0"
+          OPEN_SPIEL_ABSL_VERSION: "20250127.1"
           OPEN_SPIEL_BUILD_WITH_ORTOOLS: "OFF"
           OPEN_SPIEL_BUILD_WITH_ORTOOLS_DOWNLOAD_URL: ""
-        # Standard (most current) platforms and versions.
-        - os: ubuntu-22.04
+        - os: ubuntu-24.04
           OS_PYTHON_VERSION: "3.10"
           DEFAULT_OPTIONAL_DEPENDENCY: "OFF"
           BUILD_SHARED_LIB: "OFF"
-          OPEN_SPIEL_ABSL_VERSION: "20230125.0"
+          OPEN_SPIEL_ABSL_VERSION: "20250127.1"
           OPEN_SPIEL_BUILD_WITH_ORTOOLS: "OFF"
           OPEN_SPIEL_BUILD_WITH_ORTOOLS_DOWNLOAD_URL: ""
         - os: macos-14
@@ -67,6 +66,9 @@ jobs:
     - uses: julia-actions/setup-julia@v2
       with:
         version: 1.8
+    - uses: actions/setup-python@v6
+      with:
+        python-version: ${{ matrix.OS_PYTHON_VERSION }}
     - name: Ad-hoc fix
       if: ${{ matrix.DEFAULT_OPTIONAL_DEPENDENCY == 'ON' }}
       run: |

open_spiel/python/CMakeLists.txt

@@ -1,4 +1,3 @@
-
 if (OPEN_SPIEL_BUILDING_WHEEL)
   # When building a wheel, need to use this. See:
   # https://github.com/joerick/cibuildwheel/issues/639#issuecomment-817872369
@@ -341,10 +340,17 @@ set(WHEEL_EXCLUDED_PYTHON_TESTS
   games/tic_tac_toe_test.py
   ../integration_tests/playthrough_test.py)
 
+# Prefer to use PYBIN as the executable if it's defined (e.g. on GitHub CI)
+if(NOT DEFINED ENV{PYBIN})
+  set(PYBIN ${Python3_EXECUTABLE})
+else()
+  set(PYBIN $ENV{PYBIN})
+endif()
+
 # Create a python test.
 foreach(py_test_file IN LISTS PYTHON_TESTS)
   if (NOT (OPEN_SPIEL_BUILDING_WHEEL AND ${py_test_file} IN_LIST WHEEL_EXCLUDED_PYTHON_TESTS))
-    add_test(NAME python/${py_test_file} COMMAND ${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/${py_test_file})
+    add_test(NAME python/${py_test_file} COMMAND ${PYBIN} ${CMAKE_CURRENT_SOURCE_DIR}/${py_test_file})
 
     # We need two elements in the python path: CURRENT_BINARY_DIR to pick up
     # pyspiel.so, and CURRENT_SOURCE_DIR for the Python source files. We use
@@ -361,7 +367,7 @@ endforeach(py_test_file)
 # We don't generate these automatically because we may want custom parameters.
 if (OPEN_SPIEL_ENABLE_JAX AND NOT OPEN_SPIEL_BUILDING_WHEEL)
   add_test(NAME python_examples_bridge_supervised_learning
-           COMMAND ${Python3_EXECUTABLE}
+           COMMAND ${PYBIN}
            ${CMAKE_CURRENT_SOURCE_DIR}/examples/bridge_supervised_learning.py
            --iterations 10
            --eval_every 5

open_spiel/scripts/build_and_run_tests.sh

@@ -35,6 +35,7 @@
 # Load argslib for parsing of command-line arguments.
 source $(dirname "$0")/argslib.sh
 
+ArgsLibAddArg github_ci bool false "Whether running from github CI."
 ArgsLibAddArg virtualenv bool true "Whether to use virtualenv. We enter a virtualenv (stored in venv/) only if this flag is true and we are not already in one."
 # We define a string and not a boolean, because we can to know whether this flag
 # has been explicitly set or not.
@@ -52,8 +53,11 @@ function die() {
   exit -1
 }
 
-set -e  # exit when any command fails
-# set -x  # Prints all executed command
+if [[ $ARG_github_ci == "true" ]]; then
+  echo "GitHub CI detected. Setting -e and -x"
+  set -e
+  set -x
+fi
 
 MYDIR="$(dirname "$(realpath "$0")")"
 source "${MYDIR}/global_variables.sh"
@@ -80,22 +84,28 @@ else
 fi
 
 echo -e "\e[33mRunning ${0} from $PWD\e[0m"
-PYBIN=${PYBIN:-"python3"}
-PYBIN=`which ${PYBIN}`
-if [ ! -x $PYBIN ]
+echo -e "Trying to find 'python'"
+PYBIN=`which python`
+if [[ ! -x $PYBIN ]]
 then
-  echo -e "\e[1m\e[93m$PYBIN not found! Skip build and test.\e[0m"
-  continue
+  echo -e "python not found, trying to find python3..."
+  PYBIN=`which python3`
+  if [[ ! -x $PYBIN ]]
+  then
+    echo -e "\e[1m\e[93m$PYBIN not found! Skip build and test.\e[0m"
+    exit 1
+  fi
 fi
+echo "PYBIN is $PYBIN"
 
 # if we are in a virtual_env, we will not create a new one inside.
 if [[ "$VIRTUAL_ENV" != "" ]]
 then
   echo -e "\e[1m\e[93mVirtualenv already detected. We do not create a new one.\e[0m"
   ArgsLibSet virtualenv false
-  # When you're in a virtual environment, the python binary should be just python3.
+  # When you're in a virtual environment, the python binary should be just python.
   # Otherwise, it uses the environment's python.
-  PYBIN="python3"
+  PYBIN="python"
 fi
 
 VENV_DIR="./venv"
@@ -118,9 +128,9 @@ if [[ $ARG_virtualenv == "true" ]]; then
   fi
   PYBIN=python
   source $VENV_DIR/bin/activate
-  # When you're in a virtual environment, the python binary should be just python3.
+  # When you're in a virtual environment, the python binary should be just python.
   # Otherwise, it uses the environment's python.
-  PYBIN="python3"
+  PYBIN="python"
 fi
 
 # We only exit the virtualenv if we were asked to create one.

open_spiel/scripts/ci_script.sh

@@ -17,38 +17,14 @@
 set -e
 set -x
 
-# Python 3.9 not default on Ubuntu yet (Ubuntu 20.04).
-OS=`uname -a | awk '{print $1}'`
-if [[ "$OS" = "Linux" && "$OS_PYTHON_VERSION" = "3.9" ]]; then
-  echo "Linux detected and Python 3.9 requested. Installing Python 3.9 and setting as default."
-  sudo apt-get install python3.9 python3.9-dev
-  sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.9 1
-  sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.9 1
-  # Still needed to support using venv on Ubuntu 20.04:
-  sudo apt-get install python3.9-venv
-elif [[ "$OS" = "Darwin" ]]; then
-  # Python is already intalled via brew in install.sh from actions.yml
-  brew link --force python@${OS_PYTHON_VERSION}
-fi
-
 PYBIN=${PYBIN:-"python${OS_PYTHON_VERSION}"}
 PYBIN=${PYBIN:-"python"}
 PYBIN=${PYBIN:-"python3"}
 PYBIN=`which $PYBIN`
 
 source ./open_spiel/scripts/python_extra_deps.sh $PYBIN
 
-if [[ "$OS" = "Linux" && ( "$OS_PYTHON_VERSION" = "3.9" || "$OS_PYTHON_VERSION" = "3.10" || "$OS_PYTHON_VERSION" = "3.11" || "$OS_PYTHON_VERSION" = "3.12" ) ]]; then
-  # Ubuntu 22.04 must execute the virtual env this way:
-  ${PYBIN} -m venv ./venv
-elif [[ "$OS" = "Darwin" && ( "$OS_PYTHON_VERSION" = "3.12" || "$OS_PYTHON_VERSION" = "3.13" ) ]]; then
-  ${PYBIN} -m venv ./venv
-else
-  # Ubuntu 20.04 and earlier
-  ${PYBIN} -m pip install virtualenv
-  virtualenv -p ${PYBIN} ./venv
-fi
-
+${PYBIN} -m venv ./venv
 source ./venv/bin/activate
 
 pip install --upgrade pip
@@ -63,6 +39,8 @@ pip install --upgrade -r requirements.txt
 [[ "$OPEN_SPIEL_ENABLE_PYTORCH" = "ON" ]] && pip install --no-cache-dir --upgrade $OPEN_SPIEL_PYTHON_PYTORCH_DEPS
 [[ "$OPEN_SPIEL_ENABLE_PYTHON_MISC" = "ON" ]] && pip install --no-cache-dir --upgrade $OPEN_SPIEL_PYTHON_MISC_DEPS
 
-./open_spiel/scripts/build_and_run_tests.sh
+# We need PYBIN to be python on its own so that the build and run script
+# finds the one from the virtual environment.
+PYBIN="python" ./open_spiel/scripts/build_and_run_tests.sh --github_ci=true
 
 deactivate