General approach:
- apps - where executable apps live
- libs - place for shared libraries
Dependencies in example repo:
-
apps/example-app-1depends onlibs/example-lib-core -
apps/example-app-2depends onlibs/example-lib-extendedlibs/example-lib-extendeddepends onlibs/example-lib-core -
except for
apps/example-app-1all otherpyproject.tomlhave explicit dependencypydantic. Basically all packages depends onpydantic, here I test if having explicit or implicit dependency affects the result.
Apps dependencies works:
> python apps/example-app-1/main.py
Example app 1, model: Model(pk=1)
> python apps/example-app-2/main.py
Example app 2, model: ExtendedModel(pk=1, name='test')I run all reported commands after killing pants daemon, as docs saying it should kill the cache, and without it warnings are hidden on the second run:
> ps aux | grep pants | grep -v grep | awk '{print $2}' | xargs kill -9> pants dependencies --transitive apps/example-app-1
01:11:58.78 [INFO] Initializing scheduler...
01:12:02.63 [INFO] Scheduler initialized.
01:12:04.11 [WARN] The target libs/example-lib-core/example_lib_core/schema.py imports `pydantic.BaseModel`, but Pants cannot safely infer a dependency because more than one target owns this module, so it is ambiguous which to use: ['apps/example-app-2:poetry#pydantic', 'libs/example-lib-core:poetry#pydantic', 'libs/example-lib-extended:poetry#pydantic'].
Please explicitly include the dependency you want in the `dependencies` field of libs/example-lib-core/example_lib_core/schema.py, or ignore the ones you do not want by prefixing with `!` or `!!` so that one or no targets are left.
Alternatively, you can remove the ambiguity by deleting/changing some of the targets so that only 1 target owns this module. Refer to https://www.pantsbuild.org/v2.16/docs/troubleshooting#import-errors-and-missing-dependencies.
01:12:04.11 [WARN] Pants cannot infer owners for the following imports in the target libs/example-lib-core/example_lib_core/schema.py:
* pydantic.BaseModel (line: 1)
If you do not expect an import to be inferrable, add `# pants: no-infer-dep` to the import line. Otherwise, see https://www.pantsbuild.org/v2.16/docs/troubleshooting#import-errors-and-missing-dependencies for common problems.How should I solve this:
Please explicitly include the dependency you want in the
dependenciesfield of libs/example-lib-core/example_lib_core/schema.py, or ignore the ones you do not want by prefixing with!or!!so that one or no targets are left.
my attemps:
- add explicit library dependencies to
libs/example-lib-core/BUILD:
__defaults__(all=dict(dependencies=["libs/example-lib-core:poetry"],))Partial success:
> pants dependencies --transitive apps/example-app-1
00:57:22.42 [INFO] Initializing scheduler...
00:57:26.65 [INFO] Scheduler initialized.
00:57:28.15 [WARN] Pants cannot infer owners for the following imports in the target libs/example-lib-core/example_lib_core/schema.py:
* pydantic.BaseModel (line: 1)
If you do not expect an import to be inferrable, add `# pants: no-infer-dep` to the import line. Otherwise, see https://www.pantsbuild.org/v2.16/docs/troubleshooting#import-errors-and-missing-dependencies for common problems.
3rdparty/python/default.lock:_python-default_lockfile
apps/example-app-1/pyproject.toml:poetry
libs/example-lib-core/example_lib_core/schema.py
libs/example-lib-core/pyproject.toml:poetry
libs/example-lib-core:poetry#pydantic- adding build target to
apps/example-app-1/BUILDdoesn't help:
pex_binary(
name="app-1",
entry_point="main.py",
interpreter_constraints=["==3.10.*"],
execution_mode='venv',
dependencies=[
# these doesn't help final result
# ":poetry",
# "libs/example-lib-core:poetry",
],
)- (just example, not a part of the repo) on other project, I also tried to turn libraries to actual libraries, didn't helped with warnings:
libs/example-lib-core/BUILD
__defaults__(all=dict(dependencies=["libs/example-lib-core:poetry"],))
poetry_requirements(
name="poetry",
)
python_distribution(
name="lib",
dependencies=[
# Dependencies on code to be packaged into the distribution.
":poetry",
"./example_lib_core",
],
provides=python_artifact(
name="example-lib-core",
version="0.1.0",
),
# Example of setuptools config, other build backends may have other config.
wheel_config_settings={"--global-option": ["--python-tag", "py310"]},
# Don't use setuptools with a generated setup.py.
# You can also turn this off globally in pants.toml:
#
# [setup-py-generation]
# generate_setup_default = false
generate_setup = False,
)
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