Misc cleanup pass

Author: rwgk

README.rst

@@ -34,7 +34,7 @@ dependency.
 Think of this library as a tiny self-contained version of Boost.Python
 with everything stripped away that isn't relevant for binding
 generation. Without comments, the core header files only require ~4K
-lines of code and depend on Python (3.6+, or PyPy) and the C++
+lines of code and depend on Python (3.7+, or PyPy) and the C++
 standard library. This compact implementation was possible thanks to
 some C++11 language features (specifically: tuples, lambda functions and
 variadic templates). Since its creation, this library has grown beyond
@@ -79,7 +79,7 @@ Goodies
 In addition to the core functionality, pybind11 provides some extra
 goodies:
 
-- Python 3.6+, and PyPy3 7.3 are supported with an implementation-agnostic
+- Python 3.7+, and PyPy3 7.3 are supported with an implementation-agnostic
   interface (pybind11 2.9 was the last version to support Python 2 and 3.5).
 
 - It is possible to bind C++11 lambda functions with captured

docs/compiling.rst

@@ -426,7 +426,7 @@ with ``PYTHON_EXECUTABLE``.  For example:
 
 .. code-block:: bash
 
-    cmake -DPYBIND11_PYTHON_VERSION=3.6 ..
+    cmake -DPYBIND11_PYTHON_VERSION=3.7 ..
 
     # Another method:
     cmake -DPYTHON_EXECUTABLE=/path/to/python ..
@@ -493,7 +493,7 @@ existing targets instead:
     cmake_minimum_required(VERSION 3.15...3.22)
     project(example LANGUAGES CXX)
 
-    find_package(Python 3.6 COMPONENTS Interpreter Development REQUIRED)
+    find_package(Python 3.7 COMPONENTS Interpreter Development REQUIRED)
     find_package(pybind11 CONFIG REQUIRED)
     # or add_subdirectory(pybind11)
 

tests/requirements.txt

@@ -1,10 +1,8 @@
 --only-binary=:all:
-build~=0.9; python_version=="3.6"
 build~=1.0; python_version>="3.7"
 numpy~=1.20.0; python_version=="3.7" and platform_python_implementation=="PyPy"
 numpy~=1.23.0; python_version=="3.8" and platform_python_implementation=="PyPy"
 numpy~=1.25.0; python_version=="3.9" and platform_python_implementation=='PyPy'
-numpy~=1.19.3; platform_python_implementation!="PyPy" and python_version=="3.6"
 numpy~=1.21.5; platform_python_implementation!="PyPy" and python_version>="3.7" and python_version<"3.10"
 numpy~=1.22.2; platform_python_implementation!="PyPy" and python_version=="3.10"
 numpy~=1.26.0; platform_python_implementation!="PyPy" and python_version>="3.11" and python_version<"3.13"

tests/test_numpy_array.py

@@ -198,7 +198,6 @@ def assert_references(a, b, base=None):
         assert a.flags.f_contiguous == b.flags.f_contiguous
         assert a.flags.writeable == b.flags.writeable
         assert a.flags.aligned == b.flags.aligned
-        # 1.13 supported Python 3.6
         if tuple(int(x) for x in np.__version__.split(".")[:2]) >= (1, 14):
             assert a.flags.writebackifcopy == b.flags.writebackifcopy
         else:

tools/FindPythonLibsNew.cmake

@@ -92,7 +92,7 @@ endif()
 
 # Use the Python interpreter to find the libs.
 if(NOT PythonLibsNew_FIND_VERSION)
-  set(PythonLibsNew_FIND_VERSION "3.6")
+  set(PythonLibsNew_FIND_VERSION "3.7")
 endif()
 
 if(NOT CMAKE_VERSION VERSION_LESS "3.27")

tools/pybind11NewTools.cmake

@@ -56,7 +56,7 @@ if(NOT Python_FOUND AND NOT Python3_FOUND)
   endif()
 
   find_package(
-    Python 3.6 REQUIRED COMPONENTS ${_pybind11_interp_component} ${_pybind11_dev_component}
+    Python 3.7 REQUIRED COMPONENTS ${_pybind11_interp_component} ${_pybind11_dev_component}
                                    ${_pybind11_quiet} ${_pybind11_global_keyword})
 
   # If we are in submodule mode, export the Python targets to global targets.

tools/pybind11Tools.cmake

@@ -43,7 +43,7 @@ endif()
 
 # A user can set versions manually too
 set(Python_ADDITIONAL_VERSIONS
-    "3.12;3.11;3.10;3.9;3.8;3.7;3.6"
+    "3.12;3.11;3.10;3.9;3.8;3.7"
     CACHE INTERNAL "")
 
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")