def on_builder_inited(app):
local_css_path = pathlib.Path(__file__).parent / "<STR_LIT>"<EOL>theme_css_path = (<EOL>pathlib.Path(app.srcdir) / app.config.html_static_path[<NUM_LIT:0>] / "<STR_LIT>"<EOL>)<EOL>with local_css_path.open("<STR_LIT:r>") as file_pointer:<EOL><INDENT>local_css_contents = file_pointer.read()<EOL><DEDENT>uqbar.io.write(local_css_contents, theme_css_path)<EOL>
Hooks into Sphinx's ``builder-inited`` event.

Used for copying over CSS files to theme directory.