First pass updating misc files, informed by https://github.com/pybind/pybind11/pull/5177/commits

Author: rwgk

.github/workflows/ci.yml

@@ -719,9 +719,9 @@ jobs:
 
   # This tests an "install" with the CMake tools
   install-classic:
-    name: "🐍 3.7 • Debian • x86 •  Install"
+    name: "🐍 3.9 • Debian • x86 •  Install"
     runs-on: ubuntu-latest
-    container: i386/debian:buster
+    container: i386/debian:bullseye
 
     steps:
     - uses: actions/checkout@v1  # v1 is required to run inside docker
@@ -801,7 +801,6 @@ jobs:
       fail-fast: false
       matrix:
         python:
-        - '3.7'
         - '3.8'
         - '3.9'
         - '3.10'
@@ -819,8 +818,6 @@ jobs:
             args: -DCMAKE_CXX_STANDARD=20
           - python: '3.8'
             args: -DCMAKE_CXX_STANDARD=17
-          - python: '3.7'
-            args: -DCMAKE_CXX_STANDARD=14
 
 
     name: "🐍 ${{ matrix.python }} • MSVC 2019 • x86 ${{ matrix.args }}"

include/pybind11/detail/common.h

@@ -272,8 +272,8 @@ PYBIND11_WARNING_DISABLE_MSVC(4505)
 #endif
 
 #include <Python.h>
-#if PY_VERSION_HEX < 0x03070000
-#    error "PYTHON < 3.7 IS UNSUPPORTED. pybind11 v2.12 was the last to support Python 3.6."
+#if PY_VERSION_HEX < 0x03080000
+#    error "PYTHON < 3.8 IS UNSUPPORTED. pybind11 v2.13 was the last to support Python 3.7."
 #endif
 #include <frameobject.h>
 #include <pythread.h>

pybind11/__init__.py

@@ -2,8 +2,8 @@
 
 import sys
 
-if sys.version_info < (3, 7):  # noqa: UP036
-    msg = "pybind11 does not support Python < 3.7. v2.12 was the last release supporting Python 3.6."
+if sys.version_info < (3, 8):
+    msg = "pybind11 does not support Python < 3.8. v2.13 was the last release supporting Python 3.7."
     raise ImportError(msg)
 
 

pyproject.toml

@@ -30,7 +30,7 @@ ignore_missing_imports = true
 
 
 [tool.pylint]
-master.py-version = "3.7"
+master.py-version = "3.8"
 reports.output-format = "colorized"
 messages_control.disable = [
   "design",

setup.cfg

@@ -14,7 +14,6 @@ classifiers =
     Topic :: Utilities
     Programming Language :: C++
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
@@ -38,5 +37,5 @@ project_urls =
     Chat = https://gitter.im/pybind/Lobby
 
 [options]
-python_requires = >=3.7
+python_requires = >=3.8
 zip_safe = False