Solver breaks with related dependencies that are both conditional #5506
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: macOS Monterey 12.3.1
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Poetry version: 1.1.13
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Link of a Gist with the contents of your pyproject.toml file: Here
Issue
The solver breaks when faced with dependencies A and B that are both conditional but where A depends on B only sometimes.
Consider these lines from the attached pyproject.toml
dbt = { version = "0.19.2", markers = "sys_platform != 'darwin'" }
dbt-bigquery = [
{ version = "0.19.2", markers = "sys_platform != 'darwin'" },
{ version = "^1.0.0", markers = "sys_platform == 'darwin' "},
]
The intent here is "Install dbt==0.19.2 and dbt-bigquery==0.19.2 when sys_platform is not 'darwin'; else install dbt-bigquery==^1.0.0. When trying to install on a machine using sys_platform == 'darwin' I get:
Updating dependencies
Resolving dependencies... (12.4s)
SolverProblemError
Because analytics-dbt depends on dbt (0.19.2) which depends on dbt-bigquery (0.19.2), dbt-bigquery is required.
So, because analytics-dbt depends on dbt-bigquery (^1.0.0), version solving failed.
at /opt/homebrew/Cellar/poetry/1.1.13/libexec/lib/python3.10/site-packages/poetry/puzzle/solver.py:241 in _solve
237│ packages = result.packages
238│ except OverrideNeeded as e:
239│ return self.solve_in_compatibility_mode(e.overrides, use_latest=use_latest)
240│ except SolveFailure as e:
→ 241│ raise SolverProblemError(e)
242│
243│ results = dict(
244│ depth_first_search(
245│ PackageNode(self._package, packages), aggregate_package_nodes
The same error is reached when those pyproject.toml lines are replaced by
dbt = { version = "0.19.2", markers = "sys_platform != 'darwin'" }
dbt-bigquery = { version = "^1.0.0", markers = "sys_platform == 'darwin'" },
By contrast, note that this pyproject.toml:
[tool.poetry]
name = "analytics-dbt"
version = "0.1.0"
description = ""
authors = ["Flex"]
[tool.poetry.dependencies]
python = "^3.7"
dbt = "0.19.2"
dbt-bigquery = "0.19.2"
agate = "1.6.1"
genson = "^1.2.2"
[tool.poetry.dev-dependencies]
ipdb = "^0.13.4"
[build-system]
requires = ["poetry>=0.12"]
build-backend = "poetry.masonry.api"
resolves.