package pyml

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[*] marks changes that break compatibility with previous versions.

2022-03-25

New function Py.Import.exec_code_module_from_string (suggested by Francois Berenger, https://github.com/thierry-martinez/pyml/issues/78)
New function Py.Module.compile provides a better API than Py.compile.
Py.Object.t can now be serialized (with Marshal or output_value), using Python pickle module
Cross-compiling friendly architecture detection (suggested by @EduardoRFS, https://discuss.ocaml.org/t/a-zoo-of-values-for-system/8525/20)
Detect macro unix instead of __linux__, to handle *BSD OSes (reported by Chris Pinnock, https://github.com/thierry-martinez/pyml/issues/74)
Fix bug in Windows
Null checks for many functions raising OCaml exceptions, instead of segmentation fault (initial implementation by Laurent Mazare, https://github.com/thierry-martinez/pyml/pull/72)
Fix wide character conversion bugs leading to segmentation fault in Py_wfopen (fixed by Jerry James, https://github.com/thierry-martinez/pyml/pull/75)
Gc.full_major () before unloading libpython in Py.finalize, to prevent segfaulting on finalizing dangling references to Python values after the library had been unloaded (reported by Denis Efremov on coccinelle mailing list)
Fix segmentation fault when ~debug_build:true was passed to Py.initialize (reported by Stéphane Glondu, https://github.com/thierry-martinez/pyml/issues/79)

More portable architecture detection (inspired by the discussion https://discuss.ocaml.org/t/a-zoo-of-values-for-system/8525 initiated by Olaf Hering, with helpful comments from Daniel Bünzli, @EduardoRFS, David Allsopp, kit-ty-kate and jbeckford)
Better compatibility with Windows
Correct version detection for Python 3.10

Use dune as default build system (dunification done by Laurent Mazare, https://github.com/thierry-martinez/pyml/pull/28)
This should in particular fix build problems of reverse dependencies with the byte-code compiler (reported by @nicoTolly, https://github.com/thierry-martinez/pyml/issues/62)
- Handle more platforms with dune (reported by Olaf Hering, https://github.com/thierry-martinez/pyml/issues/68)
- pyutils is no longer used by generate and is shipped with pyml package as it was the case with Makefile-based build system (reported by Olaf Hering, https://github.com/thierry-martinez/pyml/issues/69)
Support for raising exceptions with traceback from OCaml (implemented by Laurent Mazare, https://github.com/thierry-martinez/pyml/pull/65)
Fix soundness bug with numpy (reported by Richard Alligier, https://github.com/thierry-martinez/pyml/pull/65)
Fix Py.Array.numpy arrays on 32-bit platforms (reported by Olaf Hering, https://github.com/thierry-martinez/pyml/pull/70)
Fix soundness bug on strings with OCaml <4.06 (reported by OCaml CI)

Compatibility with Python 3.10 (reported by Richard W.M. Jones)
- PyObject_AsCharBuffer, PyObject_AsReadBuffer, PyObject_AsWriteBuffer bindings are marked optional as they have been removed in Python 3.10.
- Py_fopen is optional and Py_wfopen is used instead if available.
More general handling of Unix architectures. (Fixed by Pino Toscano, https://github.com/thierry-martinez/pyml/pull/57)
Add Py.Set module for Python sets. (Added by Laurent Mazare, https://github.com/thierry-martinez/pyml/pull/58)
Fix #61: Numpy.to_bigarray raises an exception if source value is not a Numpy array instead of segfaulting. (Reported by Jonathan Laurent, https://github.com/thierry-martinez/pyml/issues/61)
Fix #56, #59: Add python-config heuristics to find Python library. (Reported by Anders Thuné and Nils Becker, https://github.com/thierry-martinez/pyml/issues/56 https://github.com/thierry-martinez/pyml/issues/59)
Fix import_module_opt for Python <3.6 (Reported by opam CI.)

Fix: Add an __iter__ method to python iterators. (Fixed by Laurent Mazare, https://github.com/thierry-martinez/pyml/pull/47)
Add Py.Seq.{of_seq_map, to_seq_map, unsafe_to_seq_map, of_list, of_list_map} functions.
Remove Py.Import.cleanup, which has been removed from Python 3.9, and was marked "for internal use only" before. (Reported by Victor Stinner, https://github.com/thierry-martinez/pyml/issues/49)
Fix: memory leak in pyml_wrap_closure (Fixed by Laurent Mazare, https://github.com/thierry-martinez/pyml/pull/53)
Add Py.Module.set_docstring, for Python >=3.5. (Added by Laurent Mazare, https://github.com/thierry-martinez/pyml/pull/54)
Fix: install .cmx files (Reported by Jonathan Laurent, https://github.com/thierry-martinez/pyml/issues/55)

Fix: do not fail if GIL functions are unavailable
Fix: include stdcompat.h provided with stdcompat version 13 for the prototype of caml_alloc_initialized_string.
Fix: reference to the native plugin (.cmxs) in META

Compatible with OCaml 4.10.0.
[PR 36] GC issue when registering a function with a dynamically allocated docstring. (Fixed by Laurent Mazare, https://github.com/thierry-martinez/pyml/pull/36)
[PR 34] Ensure that every function starting with "CAMLparamK" ends with "CAMLreturnX". (Fixed by Xavier Clerc, https://github.com/thierry-martinez/pyml/pull/34)
[GitHub issue #37] Fix test suite: 'list' object has no attribute 'clear' (Reported by Olaf Hering, https://github.com/thierry-martinez/pyml/issues/37)
[PR 38] Check for executable called python3. (Fixed by Olaf Hering, https://github.com/thierry-martinez/pyml/pull/38)
[PR 39] Expose is-instance and is-subclass. (Contribution by Laurent Mazare, https://github.com/thierry-martinez/pyml/pull/39)
[PR 44] Expose some GIL functions (functions from the Python C API related to the global interpreter lock. (Contribution by Laurent Mazare, https://github.com/thierry-martinez/pyml/pull/44)
Fix dynamic loading of stubs. (Fixed by Stéphane Glondu)

Support for debug build of Python library (Suggested by Arlen Cox: https://github.com/thierry-martinez/pyml/issues/18)
Bug fix in pyml_check_symbol_available
Py.compile is a wrapper for the built-in function compile (Suggested by Dhruv Makwana: https://github.com/thierry-martinez/pyml/issues/25)
Guarantees for structural and physical equalities on Py.Object.t are now documented. New predicates Py.is_none, Py.is_null, Py.Bool.is_true, Py.Bool.is_false, Py.Tuple.is_empty. (Suggested by Laurent Mazare: https://github.com/thierry-martinez/pyml/pull/31)
Fix Py.Array.numpy to handle OCaml GC's moving the floatarray (Reported by Ilias Garnier: https://github.com/thierry-martinez/pyml/issues/30)

Py.import is an alias for Py.Import.import_module.
Use *_opt naming convention for the functions that return an option instead of an exception: Py.import_opt, Py.Object.find_opt,...
of_seq/to_seq converters
get_attr/get_attr_string now returns option type
Indexing operators (for OCaml 4.06.0 and above) defined in Pyops