Cannot resolve python=^3.4 with httpx #3878
Description
- I am on the latest Poetry version.
- I have searched the issues of this repo and believe that this is not a duplicate.
- If an exception occurs when executing a command, I executed it again in debug mode (
-vvvoption).
Poetry
Version: 1.2.0a0 (latest b753aaf4)
Python: 3.8.5
Virtualenv
Python: 3.8.5
Implementation: CPython
Path: /dev/shm/newp/.venv
Valid: True
System
Platform: linux (Ubuntu 20.04.2 aarch64)
OS: posix
Python: /usr
- Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/pjw91/ab99d529e93f2f4c65dc395ac62f06dc
Issue
It's known that the package httpx requires Python>=3.6.
I want my package supports Python>=3.4, and, if there's Python>=3.6, depends on httpx, too.
However, it (poetry lock) only works when I specify tool.poetry.dependencies.python="^3.X" where X>=5.
When I specify python="^3.4", poetry lock reports a SolverProblemError.
The detail debug info:
Loading configuration file /home/pjw91/.config/pypoetry/config.toml
Loading configuration file /dev/shm/newp/poetry.toml
Using virtualenv: /dev/shm/newp/.venv
Updating dependencies
Resolving dependencies...
1: fact: newp is 0.1.0
1: derived: newp
1: fact: newp depends on httpx (^0.17.1)
1: selecting newp (0.1.0)
1: derived: httpx[http2] (>=0.17.1,<0.18.0)
PyPI: No release information found for httpx-0.0.1, skipping
PyPI: 1 packages found for httpx >=0.17.1,<0.18.0
1: fact: httpx (0.17.1) depends on httpx (0.17.1)
1: fact: httpx (0.17.1) depends on certifi (*)
1: fact: httpx (0.17.1) depends on sniffio (*)
1: fact: httpx (0.17.1) depends on rfc3986 (>=1.3,<2)
1: fact: httpx (0.17.1) depends on httpcore (>=0.12.1,<0.13)
1: fact: httpx (0.17.1) depends on h2 (>=3.0.0,<4.0.0)
1: selecting httpx[http2] (0.17.1)
1: derived: h2 (>=3.0.0,<4.0.0)
1: derived: httpcore (>=0.12.1,<0.13)
1: derived: rfc3986[idna2008] (>=1.3,<2)
1: derived: sniffio
1: derived: certifi
1: derived: httpx (==0.17.1)
PyPI: No release information found for h2-0.1.0, skipping
PyPI: 5 packages found for h2 >=3.0.0,<4.0.0
PyPI: 3 packages found for httpcore >=0.12.1,<0.13
PyPI: No release information found for rfc3986-0.0.0, skipping
PyPI: 4 packages found for rfc3986 >=1.3,<2
PyPI: 4 packages found for sniffio *
PyPI: No release information found for certifi-0, skipping
PyPI: 43 packages found for certifi *
PyPI: No release information found for httpx-0.0.1, skipping
PyPI: 1 packages found for httpx 0.17.1
1: fact: httpx (0.17.1) depends on certifi (*)
1: fact: httpx (0.17.1) depends on sniffio (*)
1: fact: httpx (0.17.1) depends on rfc3986 (>=1.3,<2)
1: fact: httpx (0.17.1) depends on httpcore (>=0.12.1,<0.13)
1: selecting httpx (0.17.1)
1: fact: httpcore (0.12.3) depends on h11 (<1.0.0)
1: fact: httpcore (0.12.3) depends on sniffio (>=1.0.0,<2.0.0)
1: selecting httpcore (0.12.3)
1: derived: sniffio (>=1.0.0,<2.0.0)
1: derived: h11 (<1.0.0)
PyPI: No release information found for h11-0.0.1, skipping
PyPI: 9 packages found for h11 <1.0.0
1: fact: sniffio (1.2.0) requires Python >=3.5
1: derived: not sniffio (==1.2.0)
1: fact: sniffio (1.1.0) requires Python >=3.5
1: derived: not sniffio (==1.1.0)
1: fact: sniffio (1.0.0) requires Python >=3.5
1: derived: not sniffio (==1.0.0)
1: fact: no versions of sniffio match >1.0.0,<1.1.0 || >1.1.0,<1.2.0 || >1.2.0,<2.0.0
1: conflict: no versions of sniffio match >1.0.0,<1.1.0 || >1.1.0,<1.2.0 || >1.2.0,<2.0.0
1: ! sniffio (>1.0.0,!=1.1.0,!=1.2.0,<2.0.0) is partially satisfied by not sniffio (==1.0.0)
1: ! which is caused by "sniffio (1.0.0) requires Python >=3.5"
1: ! thus: sniffio is forbidden
1: ! sniffio (>=1.0.0,!=1.1.0,!=1.2.0,<2.0.0) is partially satisfied by not sniffio (==1.1.0)
1: ! which is caused by "sniffio (1.1.0) requires Python >=3.5"
1: ! thus: sniffio is forbidden
1: ! sniffio (>=1.0.0,!=1.2.0,<2.0.0) is partially satisfied by not sniffio (==1.2.0)
1: ! which is caused by "sniffio (1.2.0) requires Python >=3.5"
1: ! thus: sniffio is forbidden
1: fact: sniffio is forbidden
1: derived: not sniffio (>=1.0.0,<2.0.0)
1: derived: not httpcore (==0.12.3)
1: fact: httpx (0.17.1) depends on httpx (0.17.1)
1: fact: httpx (0.17.1) depends on certifi (*)
1: fact: httpx (0.17.1) depends on sniffio (*)
1: fact: httpx (0.17.1) depends on rfc3986 (>=1.3,<2)
1: fact: httpx (0.17.1) depends on httpcore (>=0.12.1,<0.13)
1: fact: httpx (0.17.1) depends on h2 (>=3.0.0,<4.0.0)
2: selecting httpx[http2] (0.17.1)
2: derived: h2 (>=3.0.0,<4.0.0)
2: derived: httpcore (>=0.12.1,<0.13)
2: derived: rfc3986[idna2008] (>=1.3,<2)
2: derived: sniffio
2: derived: certifi
2: derived: httpx (==0.17.1)
2: selecting sniffio (0.0.0)
2: fact: httpx (0.17.1) depends on certifi (*)
2: fact: httpx (0.17.1) depends on sniffio (*)
2: fact: httpx (0.17.1) depends on rfc3986 (>=1.3,<2)
2: fact: httpx (0.17.1) depends on httpcore (>=0.12.1,<0.13)
2: selecting httpx (0.17.1)
2: fact: httpcore (0.12.2) requires Python >=3.6
2: derived: not httpcore (==0.12.2)
2: fact: httpcore (0.12.1) requires Python >=3.6
2: derived: not httpcore (==0.12.1)
2: fact: no versions of httpcore match >0.12.1,<0.12.2 || >0.12.2,<0.12.3 || >0.12.3,<0.13
2: conflict: no versions of httpcore match >0.12.1,<0.12.2 || >0.12.2,<0.12.3 || >0.12.3,<0.13
2: ! httpcore (>0.12.1,!=0.12.2,!=0.12.3,<0.13) is partially satisfied by not httpcore (==0.12.1)
2: ! which is caused by "httpcore (0.12.1) requires Python >=3.6"
2: ! thus: httpcore is forbidden
2: fact: httpcore is forbidden
2: derived: not httpcore (>=0.12.1,!=0.12.2,!=0.12.3,<0.13)
2: conflict: httpcore (0.12.2) requires Python >=3.6
2: ! httpcore (==0.12.2) is partially satisfied by not httpcore (>=0.12.1,!=0.12.2,!=0.12.3,<0.13)
2: ! which is caused by "httpcore is forbidden"
2: ! thus: httpcore is forbidden
2: fact: httpcore is forbidden
2: derived: not httpcore (>=0.12.1,!=0.12.3,<0.13)
2: derived: not httpx (==0.17.1)
2: derived: not httpx[http2] (==0.17.1)
2: fact: no versions of httpx match >0.17.1,<0.18.0
2: conflict: no versions of httpx match >0.17.1,<0.18.0
2: ! httpx[http2] (>0.17.1,<0.18.0) is partially satisfied by not httpx[http2] (==0.17.1)
2: ! which is caused by "httpx (0.17.1) depends on httpcore (>=0.12.1,<0.13)"
2: ! thus: httpx (>=0.17.1,<0.18.0) requires httpcore (>=0.12.1,<0.13)
2: ! not httpcore (>=0.12.1,<0.13) is partially satisfied by not httpcore (>=0.12.1,!=0.12.3,<0.13)
2: ! which is caused by "httpcore is forbidden"
2: ! thus: httpx (>=0.17.1,<0.18.0) requires httpcore (0.12.3)
2: ! not httpcore (==0.12.3) is satisfied by not httpcore (==0.12.3)
2: ! which is caused by "httpcore (0.12.3) depends on sniffio (>=1.0.0,<2.0.0)"
2: ! thus: httpx (>=0.17.1,<0.18.0) requires sniffio (>=1.0.0,<2.0.0)
2: ! not sniffio (>=1.0.0,<2.0.0) is satisfied by not sniffio (>=1.0.0,<2.0.0)
2: ! which is caused by "sniffio is forbidden"
2: ! thus: httpx is forbidden
2: ! httpx[http2] (>=0.17.1,<0.18.0) is satisfied by httpx[http2] (>=0.17.1,<0.18.0)
2: ! which is caused by "newp depends on httpx (^0.17.1)"
2: ! thus: version solving failed
2: Version solving took 0.562 seconds.
2: Tried 2 solutions.
Stack trace:
4 .venv/lib/python3.8/site-packages/poetry/puzzle/solver.py:251 in _solve
249│
250│ try:
→ 251│ result = resolve_version(
252│ self._package, self._provider, locked=locked, use_latest=use_latest
253│ )
3 .venv/lib/python3.8/site-packages/poetry/mixology/__init__.py:24 in resolve_version
22│ solver = VersionSolver(root, provider, locked=locked, use_latest=use_latest)
23│
→ 24│ return solver.solve()
25│
2 .venv/lib/python3.8/site-packages/poetry/mixology/version_solver.py:80 in solve
78│ next = self._root.name
79│ while next is not None:
→ 80│ self._propagate(next)
81│ next = self._choose_package_version()
82│
1 .venv/lib/python3.8/site-packages/poetry/mixology/version_solver.py:120 in _propagate
118│ # where that incompatibility will allow us to derive new assignments
119│ # that avoid the conflict.
→ 120│ root_cause = self._resolve_conflict(incompatibility)
121│
122│ # Back jumping erases all the assignments we did at the previous
SolveFailure
The current project's Python requirement (>=3.4,<4.0) is not compatible with some of the required packages Python requirement:
- httpcore requires Python >=3.6, so it will not be satisfied for Python >=3.4,<3.6
- httpcore requires Python >=3.6, so it will not be satisfied for Python >=3.4,<3.6
- sniffio requires Python >=3.5, so it will not be satisfied for Python >=3.4,<3.5
- sniffio requires Python >=3.5, so it will not be satisfied for Python >=3.4,<3.5
- sniffio requires Python >=3.5, so it will not be satisfied for Python >=3.4,<3.5
Because no versions of httpcore match >0.12.1,<0.12.2 || >0.12.2,<0.12.3 || >0.12.3,<0.13
and httpcore (0.12.1) requires Python >=3.6, httpcore is forbidden.
And because httpcore (0.12.2) requires Python >=3.6, httpcore is forbidden.
Because no versions of httpx match >0.17.1,<0.18.0
and httpx (0.17.1) depends on httpcore (>=0.12.1,<0.13), httpx (>=0.17.1,<0.18.0) requires httpcore (>=0.12.1,<0.13).
Thus, httpx (>=0.17.1,<0.18.0) requires httpcore (0.12.3).
(1) So, because httpcore (0.12.3) depends on sniffio (>=1.0.0,<2.0.0), httpx (>=0.17.1,<0.18.0) requires sniffio (>=1.0.0,<2.0.0).
Because no versions of sniffio match >1.0.0,<1.1.0 || >1.1.0,<1.2.0 || >1.2.0,<2.0.0
and sniffio (1.0.0) requires Python >=3.5, sniffio is forbidden.
And because sniffio (1.1.0) requires Python >=3.5
and sniffio (1.2.0) requires Python >=3.5, sniffio is forbidden.
And because httpx (>=0.17.1,<0.18.0) requires sniffio (>=1.0.0,<2.0.0) (1), httpx is forbidden
So, because newp depends on httpx (^0.17.1), version solving failed.
at .venv/lib/python3.8/site-packages/poetry/mixology/version_solver.py:314 in _resolve_conflict
310│ )
311│ self._log(f'{bang} which is caused by "{most_recent_satisfier.cause}"')
312│ self._log(f"{bang} thus: {incompatibility}")
313│
→ 314│ raise SolveFailure(incompatibility)
315│
316│ def _choose_package_version(self) -> Optional[str]:
317│ """
318│ Tries to select a version of a required package.
The following error occurred when trying to handle this error:
Stack trace:
11 .venv/lib/python3.8/site-packages/cleo/application.py:314 in run
312│
313│ try:
→ 314│ exit_code = self._run(io)
315│ except Exception as e:
316│ if not self._catch_exceptions:
10 .venv/lib/python3.8/site-packages/poetry/console/application.py:164 in _run
162│ self._load_plugins(io)
163│
→ 164│ return super()._run(io)
165│
166│ def _configure_io(self, io: IO) -> None:
9 .venv/lib/python3.8/site-packages/cleo/application.py:409 in _run
407│ io.set_input(ArgvInput(argv))
408│
→ 409│ exit_code = self._run_command(command, io)
410│ self._running_command = None
411│
8 .venv/lib/python3.8/site-packages/cleo/application.py:451 in _run_command
449│
450│ if error is not None:
→ 451│ raise error
452│
453│ return event.exit_code
7 .venv/lib/python3.8/site-packages/cleo/application.py:435 in _run_command
433│
434│ if event.command_should_run():
→ 435│ exit_code = command.run(io)
436│ else:
437│ exit_code = ConsoleCommandEvent.RETURN_CODE_DISABLED
6 .venv/lib/python3.8/site-packages/cleo/commands/base_command.py:118 in run
116│ io.input.validate()
117│
→ 118│ status_code = self.execute(io)
119│
120│ if status_code is None:
5 .venv/lib/python3.8/site-packages/cleo/commands/command.py:85 in execute
83│
84│ try:
→ 85│ return self.handle()
86│ except KeyboardInterrupt:
87│ return 1
4 .venv/lib/python3.8/site-packages/poetry/console/commands/lock.py:47 in handle
45│ self._installer.lock(update=not self.option("no-update"))
46│
→ 47│ return self._installer.run()
48│
3 .venv/lib/python3.8/site-packages/poetry/installation/installer.py:112 in run
110│ local_repo = Repository()
111│
→ 112│ return self._do_install(local_repo)
113│
114│ def dry_run(self, dry_run: bool = True) -> "Installer":
2 .venv/lib/python3.8/site-packages/poetry/installation/installer.py:252 in _do_install
250│ )
251│
→ 252│ ops = solver.solve(use_latest=self._whitelist)
253│ else:
254│ self._io.write_line("Installing dependencies from lock file")
1 .venv/lib/python3.8/site-packages/poetry/puzzle/solver.py:78 in solve
76│ with self._provider.progress():
77│ start = time.time()
→ 78│ packages, depths = self._solve(use_latest=use_latest)
79│ end = time.time()
80│
SolverProblemError
The current project's Python requirement (>=3.4,<4.0) is not compatible with some of the required packages Python requirement:
- httpcore requires Python >=3.6, so it will not be satisfied for Python >=3.4,<3.6
- httpcore requires Python >=3.6, so it will not be satisfied for Python >=3.4,<3.6
- sniffio requires Python >=3.5, so it will not be satisfied for Python >=3.4,<3.5
- sniffio requires Python >=3.5, so it will not be satisfied for Python >=3.4,<3.5
- sniffio requires Python >=3.5, so it will not be satisfied for Python >=3.4,<3.5
Because no versions of httpcore match >0.12.1,<0.12.2 || >0.12.2,<0.12.3 || >0.12.3,<0.13
and httpcore (0.12.1) requires Python >=3.6, httpcore is forbidden.
And because httpcore (0.12.2) requires Python >=3.6, httpcore is forbidden.
Because no versions of httpx match >0.17.1,<0.18.0
and httpx (0.17.1) depends on httpcore (>=0.12.1,<0.13), httpx (>=0.17.1,<0.18.0) requires httpcore (>=0.12.1,<0.13).
Thus, httpx (>=0.17.1,<0.18.0) requires httpcore (0.12.3).
(1) So, because httpcore (0.12.3) depends on sniffio (>=1.0.0,<2.0.0), httpx (>=0.17.1,<0.18.0) requires sniffio (>=1.0.0,<2.0.0).
Because no versions of sniffio match >1.0.0,<1.1.0 || >1.1.0,<1.2.0 || >1.2.0,<2.0.0
and sniffio (1.0.0) requires Python >=3.5, sniffio is forbidden.
And because sniffio (1.1.0) requires Python >=3.5
and sniffio (1.2.0) requires Python >=3.5, sniffio is forbidden.
And because httpx (>=0.17.1,<0.18.0) requires sniffio (>=1.0.0,<2.0.0) (1), httpx is forbidden
So, because newp depends on httpx (^0.17.1), version solving failed.
at .venv/lib/python3.8/site-packages/poetry/puzzle/solver.py:259 in _solve
255│ packages = result.packages
256│ except OverrideNeeded as e:
257│ return self.solve_in_compatibility_mode(e.overrides, use_latest=use_latest)
258│ except SolveFailure as e:
→ 259│ raise SolverProblemError(e)
260│
261│ results = dict(
262│ depth_first_search(
263│ PackageNode(self._package, packages), aggregate_package_nodes