patch for _Py_fopen -> fopen

[mattip]

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

Adopt upstream boostorg/python#344. Should be enough to get the PyPy3.7 migration to pass.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[mattip]

@conda-forge-admin, please rerender

[mattip]

this replaces all the open migration PRs #96 #106 #107 #108 #109 which can be closed.

[isuruf]

They can't be replaced, unless you copy the .ci_support/migrations/pypy*.yaml files here.

[mattip]

ahh. So what happens to those PRs if this gets merged?

[isuruf]

They'll have to be rebased.

[isuruf]

@conda-forge-admin, rerender

[mattip]

Nope. boost is using internal structures

$BUILD_PREFIX/x86_64-conda-linux-gnu/include/c++/9.3.0/bits/unique_ptr.h:53:28: note: declared here
   53 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
libs/python/src/wrapper.cpp: In member function 'boost::python::override boost::python::detail::wrapper_base::get_override(const char*, PyTypeObject*) const':
libs/python/src/wrapper.cpp:28:50: error: 'struct PyMethodObject' has no member named 'im_self'
   28 |                   && ((PyMethodObject*)m.get())->im_self == this->m_self
      |                                                  ^~~~~~~
      |    ^~~~~~~~~~~~~~
./boost/python/detail/is_auto_ptr.hpp:17:1: note: in expansion of macro 'BOOST_PYTHON_IS_XXX_DEF'
   17 | BOOST_PYTHON_IS_XXX_DEF(auto_ptr, std::auto_ptr, 1)
      | ^~~~~~~~~~~~~~~~~~~~~~~

[mattip]

Deeper into the rabbit hole: on latest HEAD that problem is gone. It was fixed in boostorg/python#291

[github-actions]

Hi! This is the friendly conda-forge automerge bot!

I considered the following status checks when analyzing this PR:

• linter: passed
• drone: passed
• travis: passed
• azure: passed

Thus the PR was passing and merged! Have a great day!