Upgrade pybind11 to v3

.github/workflows/test_and_deploy.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.10', '3.11', '3.12', '3.13']
         os: [ubuntu-latest, macos-latest]
       fail-fast: false
     steps:
@@ -44,15 +44,15 @@ jobs:
         run: pip install -e '.[dev]'
       - name: Run tests
         run: python -m pytest --import-mode=append -svx nle/tests
-  test_sdist_3_9:
-    name: Test sdist on MacOS w/ Py3.9
+  test_sdist_3_10:
+    name: Test sdist on MacOS w/ Py3.10
     needs: test_repo
     runs-on: macos-latest
     steps:
-      - name: Setup Python 3.9 env
+      - name: Setup Python 3.10 env
         uses: actions/setup-python@v5
         with:
-          python-version: 3.9
+          python-version: '3.10'
       - name: Ensure latest pip, wheel & setuptools
         run: python -m pip install -q --upgrade pip wheel setuptools
       - name: Install dependencies

.github/workflows/test_package.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: macos-latest
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.10', '3.11', '3.12']
       fail-fast: false
     steps:
     - name: Setup Python ${{ matrix.python-version }} env

README.md

@@ -37,7 +37,7 @@ with other gym (or Gynmasium) / RL environments.
 
 ## Installation
 
-NLE requires `python>=3.9`, `cmake>=3.18` to be installed and available both when building the
+NLE requires `python>=3.10`, `cmake>=3.18` to be installed and available both when building the
 package, and at runtime.
 
 On **MacOS**, one can use `Homebrew` as follows:
@@ -66,7 +66,7 @@ Afterwards it's a matter of setting up your environment. We advise using a conda
 environment for this:
 
 ```bash
-$ conda create -y -n nle python=3.9
+$ conda create -y -n nle python=3.10
 $ conda activate nle
 $ pip install nle
 ```

doc/nle/source/getting_started.rst

@@ -4,7 +4,7 @@ Getting Started
 Dependencies
 ************
 
-NLE requires `python>=3.9`, `cmake>=3.18` and some NetHack dependencies
+NLE requires `python>=3.10`, `cmake>=3.18` and some NetHack dependencies
 (e.g. `libncurses`) to be installed and available both when building the
 package, and at runtime.
 

docker/Dockerfile-focal

@@ -5,7 +5,7 @@ FROM nvidia/cuda:12.4.1-devel-ubuntu20.04
 ARG TARGETPLATFORM
 RUN echo "Building image for $TARGETPLATFORM"
 
-ARG PYTHON_VERSION=3.9
+ARG PYTHON_VERSION=3.10
 ENV DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get update && \

docker/Dockerfile.valgrind

@@ -3,7 +3,7 @@
 
 FROM ubuntu:20.04
 
-ARG PYTHON_VERSION=3.9
+ARG PYTHON_VERSION=3.10
 ENV DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get update && apt-get install -yq \

pyproject.toml

@@ -46,11 +46,11 @@ allow-dict-calls-with-keyword-arguments = true
 
 [tool.cibuildwheel]
 # We need to build wheels for the following Python versions:
-build = "cp{39,310,311,312,313}-*"
+build = "cp{310,311,312,313}-*"
 
 [tool.cibuildwheel.linux]
 # Only manylinux is supported (no musllinux)
-build = "cp{39,310,311,312,313}-manylinux*"
+build = "cp{310,311,312,313}-manylinux*"
 
 # We need to clean up the build directory, all .so files, and CMakeCache.txt
 # and install the dependencies using yum, as manylinux2014 image is CentOS 7-based

setup.py

@@ -157,14 +157,13 @@ def build_extension(self, ext):
         setup_requires=["pybind11>=2.2"],
         install_requires=["pybind11>=2.2", "numpy>=1.16", "gymnasium==1.0.0"],
         extras_require=extras_deps,
-        python_requires=">=3.9",
+        python_requires=">=3.10",
         classifiers=[
             "License :: OSI Approved :: Nethack General Public License",
             "Development Status :: 5 - Production/Stable",
             "Operating System :: POSIX :: Linux",
             "Operating System :: MacOS",
             "Programming Language :: Python :: 3",
-            "Programming Language :: Python :: 3.9",
             "Programming Language :: Python :: 3.10",
             "Programming Language :: Python :: 3.11",
             "Programming Language :: Python :: 3.12",