dev-python/pycairo: enable py3.13

Signed-off-by: Sam James <sam@gentoo.org>

dev-python/pycairo/files/pycairo-1.26.0-py313.patch

@@ -0,0 +1,30 @@
+https://github.com/pygobject/pycairo/pull/366
+
+From 387e27fa36d29bc8f656656ca8b47e7b4996f4f4 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Miro=20Hron=C4=8Dok?= <miro@hroncok.cz>
+Date: Wed, 29 May 2024 21:25:41 +0200
+Subject: [PATCH] Avoid invalid PyBUF_READ flag in PyObject_GetBuffer()
+
+Since Python 3.13, the flag is no longer allowed.
+
+See https://github.com/python/cpython/pull/114707
+
+Fixes https://github.com/pygobject/pycairo/issues/365
+---
+ cairo/surface.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/cairo/surface.c b/cairo/surface.c
+index 048522c6..f00db8b5 100644
+--- a/cairo/surface.c
++++ b/cairo/surface.c
+@@ -484,7 +484,7 @@ surface_set_mime_data (PycairoSurface *o, PyObject *args) {
+     return NULL;
+   }
+ 
+-  res = PyObject_GetBuffer (obj, view, PyBUF_READ);
++  res = PyObject_GetBuffer (obj, view, PyBUF_SIMPLE);
+   if (res == -1) {
+       PyMem_Free (view);
+       return NULL;
+

dev-python/pycairo/pycairo-1.26.0-r1.ebuild

@@ -0,0 +1,77 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+DISTUTILS_EXT=1
+DISTUTILS_USE_PEP517=setuptools
+PYTHON_COMPAT=( python3_{10..13} pypy3 )
+PYTHON_REQ_USE="threads(+)"
+
+inherit distutils-r1
+
+DESCRIPTION="Python bindings for the cairo library"
+HOMEPAGE="
+	https://www.cairographics.org/pycairo/
+	https://github.com/pygobject/pycairo/
+	https://pypi.org/project/pycairo/
+"
+SRC_URI="
+	https://github.com/pygobject/${PN}/releases/download/v${PV}/${P}.tar.gz
+"
+
+LICENSE="|| ( LGPL-2.1 MPL-1.1 )"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos"
+IUSE="examples"
+
+BDEPEND="
+	virtual/pkgconfig
+	test? (
+		dev-python/hypothesis[${PYTHON_USEDEP}]
+	)
+"
+RDEPEND="
+	>=x11-libs/cairo-1.15.10[svg(+)]
+"
+DEPEND="
+	${RDEPEND}
+	x11-base/xorg-proto
+"
+
+PATCHES=(
+	"${FILESDIR}"/pycairo-1.26.0-py313.patch
+)
+
+distutils_enable_sphinx docs \
+	dev-python/sphinx-rtd-theme
+distutils_enable_tests pytest
+
+python_test() {
+	esetup.py build_tests
+	epytest
+}
+
+python_install() {
+	distutils-r1_python_install
+
+	# we need to pass --root via install command, sigh
+	cat > "${T}/distutils-extra.cfg" <<-EOF || die
+		[install]
+		root = ${D}
+	EOF
+	local -x DIST_EXTRA_CONFIG=${T}/distutils-extra.cfg
+	esetup.py \
+		install_pkgconfig --pkgconfigdir="${EPREFIX}/usr/$(get_libdir)/pkgconfig"
+}
+
+python_install_all() {
+	if use examples; then
+		dodoc -r examples
+	fi
+
+	distutils-r1_python_install_all
+
+	insinto /usr/include/pycairo
+	doins cairo/py3cairo.h
+}