Can't export lockfiles with dependencies that add extras in dev-requirements #3018
Description
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I am on the latest Poetry version.
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I have searched the issues of this repo and believe that this is not a duplicate.
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If an exception occurs when executing a command, I executed it again in debug mode (
-vvvoption). -
OS version and name: Debian GNU/Linux 9 (stretch)
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Poetry version: 1.10
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Link of a Gist with the contents of my pyproject.toml file: here
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Failing command:
poetry export -f requirements.txt
Issue
This is a very fresh bug. It's due to 1159148, in particular this line. As can be seen in the attached pyproject.toml gist, if a dependency is added as a bare in [poetry.dependencies] and with extras in [poetry.dev-dependencies], find_packages will at some point return an empty list. This leads to the following crash when trying to export a lockfile:
# poetry lock
Updating dependencies
Resolving dependencies... (0.3s)
Writing lock file
# poetry export -f requirements.txt -vvv
Stack trace:
6 /usr/local/lib/python3.7/site-packages/clikit/console_application.py:131 in run
129│ parsed_args = resolved_command.args
130│
→ 131│ status_code = command.handle(parsed_args, io)
132│ except KeyboardInterrupt:
133│ status_code = 1
5 /usr/local/lib/python3.7/site-packages/clikit/api/command/command.py:120 in handle
118│ def handle(self, args, io): # type: (Args, IO) -> int
119│ try:
→ 120│ status_code = self._do_handle(args, io)
121│ except KeyboardInterrupt:
122│ if io.is_debug():
4 /usr/local/lib/python3.7/site-packages/clikit/api/command/command.py:171 in _do_handle
169│ handler_method = self._config.handler_method
170│
→ 171│ return getattr(handler, handler_method)(args, io, self)
172│
173│ def __repr__(self): # type: () -> str
3 /usr/local/lib/python3.7/site-packages/cleo/commands/command.py:92 in wrap_handle
90│ self._command = command
91│
→ 92│ return self.handle()
93│
94│ def handle(self): # type: () -> Optional[int]
2 /usr/local/lib/python3.7/site-packages/poetry/console/commands/export.py:73 in handle
71│ dev=self.option("dev"),
72│ extras=self.option("extras"),
→ 73│ with_credentials=self.option("with-credentials"),
74│ )
75│
1 /usr/local/lib/python3.7/site-packages/poetry/utils/exporter.py:43 in export
41│ dev=dev,
42│ extras=extras,
→ 43│ with_credentials=with_credentials,
44│ )
45│
IndexError
list index out of range
at /usr/local/lib/python3.7/site-packages/poetry/utils/exporter.py:76 in _export_requirements_txt
72│ if not dev
73│ else self._poetry.package.all_requires,
74│ with_nested=True,
75│ ):
→ 76│ package = repository.find_packages(dependency=dependency)[0]
77│
78│ # If a package is optional and we haven't opted in to it, continue
79│ if package.optional and package.name not in extra_package_names:
80│ continue
Other things I tried:
- a different set of dependencies that had alpha releases (pyparsing v.3.0.2 with its "diagrams" extra) -> same bug
- extras in
[poetry.dependencies]and bare dependency in[poetry.dev-dependencies]-> no bug
Pinging @abn, who might know more about this.