pkgdev bugs: filing a stablereq with a large package list fails (urllib.error.HTTPError: HTTP Error 400: Bad Request)

``` $ pkgdev --version pkgdev 0.2.12 $ pkgdev bugs --api-key $(<~/.bugz_token) @selinux/policy [...] Check for open bugs matching current graph? [Yes/No] (default: No): no Continue and create 1 stablereq bugs? [Yes/No] (default: No): yes Traceback (most recent call last): File "/usr/lib/python-exec/python3.14/pkgdev", line 8, in <module> sys.exit(main()) ~~~~^^ File "/usr/lib/python3.14/site-packages/pkgdev/scripts/__init__.py", line 48, in main run(os.path.basename(sys.argv[0])) ~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.14/site-packages/pkgdev/scripts/__init__.py", line 40, in run sys.exit(tool()) ~~~~^^ File "/usr/lib/python3.14/site-packages/snakeoil/cli/tool.py", line 81, in __call__ ret = self.main() File "/usr/lib/python3.14/site-packages/pkgdev/cli.py", line 23, in main return super().main() ~~~~~~~~~~~~^^ File "/usr/lib/python3.14/site-packages/snakeoil/cli/tool.py", line 191, in main self.handle_exec_exception(e) ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^ File "/usr/lib/python3.14/site-packages/snakeoil/cli/tool.py", line 176, in main exitstatus = func(self.options, self.out, self.err) File "/usr/lib/python3.14/site-packages/pkgdev/scripts/pkgdev_bugs.py", line 816, in main d.file_bugs(options.api_key, frozenset(enabled).difference(disabled), blocks) ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.14/site-packages/pkgdev/scripts/pkgdev_bugs.py", line 735, in file_bugs node.file_bug(api_key, auto_cc_arches, block_bugs, self.modified_repo, observe) ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.14/site-packages/pkgdev/scripts/pkgdev_bugs.py", line 335, in file_bug with urllib.urlopen(request, timeout=30) as response: ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.14/urllib/request.py", line 187, in urlopen return opener.open(url, data, timeout) ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.14/urllib/request.py", line 493, in open response = meth(req, response) File "/usr/lib/python3.14/urllib/request.py", line 602, in http_response response = self.parent.error( 'http', request, response, code, msg, hdrs) File "/usr/lib/python3.14/urllib/request.py", line 531, in error return self._call_chain(*args) ~~~~~~~~~~~~~~~~^^^^^^^ File "/usr/lib/python3.14/urllib/request.py", line 464, in _call_chain result = func(*args) File "/usr/lib/python3.14/urllib/request.py", line 611, in http_error_default raise HTTPError(req.full_url, code, msg, hdrs, fp) urllib.error.HTTPError: HTTP Error 400: Bad Request ``` This is at ::gentoo commit 759e2225ae9d69cded09fb38d125cf1d85b5c5df. See also: * https://github.com/pkgcore/pkgdev/issues/141 (especially) * https://github.com/pkgcore/pkgdev/issues/209