libfirm: move to python3

Build and diffoscope with old version. Nothing changed.

srcpkgs/libfirm/patches/python-3.12.patch

@@ -0,0 +1,33 @@
+--- a/scripts/jinja2/filters.py
++++ b/scripts/jinja2/filters.py
+@@ -21,7 +21,7 @@ from jinja2.exceptions import FilterArgu
+ from jinja2._compat import imap, string_types, text_type, iteritems
+ 
+ 
+-_word_re = re.compile(r'\w+(?u)')
++_word_re = re.compile(r'\w+')
+ 
+ 
+ def contextfilter(f):
+--- a/scripts/jinja2/tests.py
++++ b/scripts/jinja2/tests.py
+@@ -9,7 +9,7 @@
+     :license: BSD, see LICENSE for more details.
+ """
+ import re
+-from collections import Mapping
++from collections.abc import Mapping
+ from jinja2.runtime import Undefined
+ from jinja2._compat import text_type, string_types
+ 
+--- a/scripts/markupsafe/__init__.py
++++ b/scripts/markupsafe/__init__.py
+@@ -10,7 +10,7 @@
+ """
+ import re
+ import string
+-from collections import Mapping
++from collections.abc import Mapping
+ from markupsafe._compat import text_type, string_types, int_types, \
+      unichr, iteritems, PY2
+ 

srcpkgs/libfirm/template

@@ -3,7 +3,7 @@ pkgname=libfirm
 version=1.22.0
 revision=2
 build_style=gnu-makefile
-hostmakedepends="perl python"
+hostmakedepends="perl python3"
 short_desc="Graph based SSA intermediate code representation"
 maintainer="Leah Neukirchen <leah@vuxu.org>"
 license="LGPL-2.1-or-later"