tmp polybar-git fail

```
-- Configuring done
-- Generating done
-- Build files have been written to: /build/polybar-git/src/polybar/build
Scanning dependencies of target doc_html
[  1%] sphinx-build html: see doc/builder-html.log
WARNING: html_static_path entry '/build/polybar-git/src/polybar/doc/_static' does not exist
[  1%] Built target doc_html
Scanning dependencies of target doc_man
[  2%] sphinx-build man: see doc/builder-man.log
WARNING: html_static_path entry '/build/polybar-git/src/polybar/doc/_static' does not exist
[  2%] Built target doc_man
Scanning dependencies of target doc
[  2%] Built target doc
[  3%] Generating ../../../lib/xpp/include/xpp/proto/x.hpp
Traceback (most recent call last):
  File "/build/polybar-git/src/polybar/lib/xpp/generators/cpp_client.py", line 3193, in <module>
    module.generate()
  File "/usr/lib/python3.8/site-packages/xcbgen/state.py", line 126, in generate
    item.out(name)
  File "/build/polybar-git/src/polybar/lib/xpp/generators/cpp_client.py", line 3007, in cpp_event
    cpp_event = CppEvent(self.opcodes[name], opcode, c_name, _ns, name, self.fields)
  File "/build/polybar-git/src/polybar/lib/xpp/generators/cppevent.py", line 207, in __init__
    for name in self.names[0:-1]:
TypeError: 'map' object is not subscriptable
make[2]: *** [lib/xpp/CMakeFiles/xpp.dir/build.make:74: ../lib/xpp/include/xpp/proto/x.hpp] Error 1
make[2]: *** Deleting file '../lib/xpp/include/xpp/proto/x.hpp'
make[1]: *** [CMakeFiles/Makefile2:521: lib/xpp/CMakeFiles/xpp.dir/all] Error 2
make: *** [Makefile:130: all] Error 2
==> ERROR: A failure occurred in build().
```