dev-python/oset: enable py3.10, EAPI=8

Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

dev-python/oset/files/oset-0.1.3-fix-py3.10.patch

@@ -0,0 +1,14 @@
+--- a/src/oset/pyoset.py
++++ b/src/oset/pyoset.py
+@@ -13,7 +13,10 @@
+     def next(it):
+         return it.next()
+ else:
+-    from collections import MutableSet
++    try:
++        from collections.abc import MutableSet
++    except ImportError:
++        from collections import MutableSet
+
+ KEY, PREV, NEXT = range(3)
+

dev-python/oset/oset-0.1.3.ebuild

@@ -3,9 +3,8 @@
 
 EAPI=7
 
-PYTHON_COMPAT=( python3_{7,8,9} )
+PYTHON_COMPAT=( python3_{8..10} )
 DISTUTILS_USE_SETUPTOOLS=rdepend
-
 inherit distutils-r1
 
 DESCRIPTION="Ordered Set"
@@ -15,3 +14,7 @@ SRC_URI="mirror://pypi/${PN:0:1}/${PN}/${P}.tar.gz"
 LICENSE="BSD"
 SLOT="0"
 KEYWORDS="~amd64 ~x86"
+
+PATCHES=(
+	"${FILESDIR}/${P}-fix-py3.10.patch"
+)