Poetry adds the same package to the lockfile twice - intended behaviour?

[rossng]

I am trying to work around a problem with Open3D 0.18.0, which has an invalid wheel for arm64 macOS.

To do this, I have a prebuilt wheel that should be used on macOS. On Linux, a different wheel should be used (either from PyPI or from another local whl file, it doesn't make a difference to this question).

I specify this dependency in my pyproject.toml:

open3d = [
    { path = "./prebuilt/open3d-0.18.0-cp310-cp310-macosx_11_0_universal2.whl", platform = "darwin" },
    { source = "pypi", version = "0.18.0", platform = "linux" },
]

When I run poetry lock --no-update, it emits two open3d entries to the poetry.lock file:

[[package]]
name = "open3d"
version = "0.18.0"
description = "Open3D: A Modern Library for 3D Data Processing."
optional = false
python-versions = ">=3.8"
files = [
    {file = "open3d-0.18.0-cp310-cp310-macosx_11_0_x86_64.whl", hash = "sha256:48ee627a142a5453c4a2869b529310acb6f6b2507989cb9199c56e75796c575e"},
    {file = "open3d-0.18.0-cp310-cp310-macosx_13_0_arm64.whl", hash = "sha256:9f3df5e8e8fe514b8285d05e43a4a3d57243d42d5c1dc9212adf8f18b6ab59b4"},
    {file = "open3d-0.18.0-cp310-cp310-manylinux_2_27_aarch64.whl", hash = "sha256:b9c8c8059cb92cd8b73c287385eeddf46195f2609ac7052302d6ac844a373dbf"},
    {file = "open3d-0.18.0-cp310-cp310-manylinux_2_27_x86_64.whl", hash = "sha256:f649d5d58090f73a337895fb0022c7b05c00f47f704b5722b103cceba04cc870"},
    {file = "open3d-0.18.0-cp310-cp310-win_amd64.whl", hash = "sha256:48cdf2af3051320140d198f5d3ea3a85eeb3355e7a989a835b611b16589b9646"},
    {file = "open3d-0.18.0-cp311-cp311-macosx_10_15_universal2.whl", hash = "sha256:b35a68b9fef3e963266db3bb15fbfef20e05787bc61192f61725fde5215f3560"},
    {file = "open3d-0.18.0-cp311-cp311-macosx_13_0_arm64.whl", hash = "sha256:2182b818dcd3290dd2ddb0021ad0453bfda99098c931d5b2fc636a341cb3ca70"},
    {file = "open3d-0.18.0-cp311-cp311-manylinux_2_27_aarch64.whl", hash = "sha256:882f1e5039a3c1c5ec05183eb650537fd7431238b7ccb2b742ca5479f02f705b"},
    {file = "open3d-0.18.0-cp311-cp311-manylinux_2_27_x86_64.whl", hash = "sha256:8e3d1d1900a8f4d956f6819c246c78081725b9b0888f8549d2a7a49c8daa1303"},
    {file = "open3d-0.18.0-cp311-cp311-win_amd64.whl", hash = "sha256:2da5da6c9eb9227baee6fe98baa992233aca36b83ec9e7d4093c77e762db60e6"},
    {file = "open3d-0.18.0-cp38-cp38-macosx_11_0_x86_64.whl", hash = "sha256:877e67237f2a97f8219870108eecf1ff447a81b0fcf1d2eacea246c9619fc55c"},
    {file = "open3d-0.18.0-cp38-cp38-macosx_13_0_arm64.whl", hash = "sha256:0ec03fcd48a939ec105896e0d02a9d006e8328c60491a0647b9a4fe5d9e4117d"},
    {file = "open3d-0.18.0-cp38-cp38-manylinux_2_27_aarch64.whl", hash = "sha256:477ed692bafd0ed591676d78bcb898bb2b684dcaa2886befe29e1b19d38a7c6d"},
    {file = "open3d-0.18.0-cp38-cp38-manylinux_2_27_x86_64.whl", hash = "sha256:46b9c1b900716771827b78006cfd18489b5327eabda8cd3d01e028b8173f4301"},
    {file = "open3d-0.18.0-cp38-cp38-win_amd64.whl", hash = "sha256:d745affd0c7c765ed30ae9010abc4cfa80980b2c9f39a4f8678e8a9ef41ce089"},
    {file = "open3d-0.18.0-cp39-cp39-macosx_11_0_x86_64.whl", hash = "sha256:cce30304dfde3b9c0fbfca21687cf0e5280bcbabe2920d2c804ab352bfe610a5"},
    {file = "open3d-0.18.0-cp39-cp39-macosx_13_0_universal2.whl", hash = "sha256:ba5e07ca9a3ec6c70393bd2c5c707455a2e9c54209ccccca15ecf03834efd353"},
    {file = "open3d-0.18.0-cp39-cp39-manylinux_2_27_aarch64.whl", hash = "sha256:23a3bf135c7e69d4116f54b1ff78f58846245b5e70640b291981cee9e49a53d7"},
    {file = "open3d-0.18.0-cp39-cp39-manylinux_2_27_x86_64.whl", hash = "sha256:7d05fd6eedf75136cfbed24983da30bdfd08a6c4b1f968bf80ab84efc1fac861"},
    {file = "open3d-0.18.0-cp39-cp39-win_amd64.whl", hash = "sha256:41be2d652f1b9feed9efb8775b29368ece0b4328ba6e90278486ff7643c6d480"},
]

[package.dependencies]
configargparse = "*"
dash = ">=2.6.0"
nbformat = ">=5.7.0"
numpy = ">=1.18.0"
werkzeug = ">=2.2.3"

[[package]]
name = "open3d"
version = "0.18.0+48ca4db"
description = "Open3D: A Modern Library for 3D Data Processing."
optional = false
python-versions = ">=3.8"
files = [
    {file = "open3d-0.18.0-cp310-cp310-macosx_11_0_universal2.whl", hash = "sha256:78b774efda42e2bdc7613f2cb12a83af1a68a81a0f3acfd4750504f821aae1de"},
]

[package.dependencies]
addict = "*"
configargparse = "*"
dash = ">=2.6.0"
matplotlib = ">=3"
nbformat = ">=5.7.0"
numpy = ">1.18"
pandas = ">=1.0"
pillow = ">=9.3.0"
pyquaternion = "*"
pyyaml = ">=5.4.1"
scikit-learn = ">=0.21"
tqdm = "*"
werkzeug = ">=2.2.3"

[package.source]
type = "file"
url = "prebuilt/open3d-0.18.0-cp310-cp310-macosx_11_0_universal2.whl"

My question: is this the intended behaviour of Poetry?

Context: I use poetry2nix which expects every entry in the lockfile to have an compatible wheel for your current platform. If you run it on macOS it will: find the Linux entry in the lockfile; fail to find a compatible wheel; and then give up with an error. It seems like this might be a bad assumption on the part of poetry2nix but I'd like to get confirmation from a Poetry maintainer before trying to change their implementation.

[dimbleby]

yes

[rossng]

Perfect, thank you