QGIS build failure

[Antonio Rojas]

QGIS 3.26 fails to build with sip 6.6.2:

sip-build: An internal error occurred...
Traceback (most recent call last):
  File "/usr/bin/sip-build", line 33, in <module>
    sys.exit(load_entry_point('sip==6.6.2', 'console_scripts', 'sip-build')())
  File "/usr/lib/python3.10/site-packages/sipbuild/tools/build.py", line 37, in main
    handle_exception(e)
  File "/usr/lib/python3.10/site-packages/sipbuild/exceptions.py", line 81, in handle_exception
    raise e
  File "/usr/lib/python3.10/site-packages/sipbuild/tools/build.py", line 34, in main
    project.build()
  File "/usr/lib/python3.10/site-packages/sipbuild/project.py", line 244, in build
    self.builder.build()
  File "/usr/lib/python3.10/site-packages/sipbuild/builder.py", line 48, in build
    self._generate_bindings()
  File "/usr/lib/python3.10/site-packages/sipbuild/builder.py", line 277, in _generate_bindings
    buildable = bindings.generate()
  File "/usr/lib/python3.10/site-packages/sipbuild/bindings.py", line 166, in generate
    spec, sip_files = parse(self.sip_file, SIP_VERSION, encoding,
  File "/usr/lib/python3.10/site-packages/sipbuild/generator/parser/parser.py", line 35, in parse
    protected_is_public, include_dirs, strict).parse(sip_file)
  File "/usr/lib/python3.10/site-packages/sipbuild/generator/parser/parser_manager.py", line 1507, in parse
    self._parser.parse(self._read(sip_file, raw_sip_file),
  File "/usr/lib/python3.10/site-packages/ply/yacc.py", line 331, in parse
    return self.parseopt(input, lexer, debug, tracking, tokenfunc)
  File "/usr/lib/python3.10/site-packages/ply/yacc.py", line 823, in parseopt
    p.callable(pslice)
  File "/usr/lib/python3.10/site-packages/sipbuild/generator/parser/rules.py", line 3029, in p_typedef_decl
    instantiated = pm.instantiate_class_template(p, name_symbol,
  File "/usr/lib/python3.10/site-packages/sipbuild/generator/parser/parser_manager.py", line 1480, in instantiate_class_template
    instantiate_class(p, symbol, fq_cpp_name, tmpl_names, proto_class,
  File "/usr/lib/python3.10/site-packages/sipbuild/generator/parser/instantiations.py", line 131, in instantiate_class
    i_class.ctors = _instantiate_ctors(tmpl_names, proto_class, template,
  File "/usr/lib/python3.10/site-packages/sipbuild/generator/parser/instantiations.py", line 235, in _instantiate_ctors
    i_ctor.py_signature = _instantiate_signature(proto_ctor.py_signature,
  File "/usr/lib/python3.10/site-packages/sipbuild/generator/parser/instantiations.py", line 368, in _instantiate_signature
    i_arg = _instantiate_argument(proto_arg, proto_class, tmpl_names,
  File "/usr/lib/python3.10/site-packages/sipbuild/generator/parser/instantiations.py", line 191, in _instantiate_argument
    i_arg.default_value = [_instantiate_value(v, expansions)
  File "/usr/lib/python3.10/site-packages/sipbuild/generator/parser/instantiations.py", line 191, in <listcomp>
    i_arg.default_value = [_instantiate_value(v, expansions)
  File "/usr/lib/python3.10/site-packages/sipbuild/generator/parser/instantiations.py", line 437, in _instantiate_value
    i_name = ScopedName.parse(template_string(proto_name, expansions))
  File "/usr/lib/python3.10/site-packages/sipbuild/generator/templates.py", line 201, in template_string
    proto_str = proto_str.replace(name, value)
AttributeError: 'ScopedName' object has no attribute 'replace'

A possible fix has been posted to https://github.com/qgis/QGIS/issues/49214