Poetry overwrites package dependency when adding with different extras and different platform

[tbenthompson]

If I run:

poetry add "jax[cuda]" --platform linux

I get the attached pyproject.toml.

Afterwards, I run:

poetry add "jax[cpu]" --platform darwin

which causes the jax line in pyproject.toml to be overwritten with

jax = {extras = ["cpu"], version = "^0.3.23", platform = "darwin"}

deleting the linux platform-specific dependency.

I would have expected the Mac dependency to be included in addition to the existing Linux dependency.

Thanks!

Versions:

• Poetry version: 1.2.2
• Python version: 3.10.6
• OS version and name: Ubuntu 22.04
• pyproject.toml:

[tool.poetry]
name = "confirm"
version = "0.1.0"
description = ""
authors = ["Your Name <you@example.com>"]

[tool.poetry.dependencies]
python = "~3.10"
numpy = "^1.23.4"
scipy = "^1.9.3"
typer = "^0.6.1"
jax = {extras = ["cuda"], version = "^0.3.23", platform = "linux"}
    
[tool.poetry.dev-dependencies]
jupyterlab = "^3.5.0"

[tool.poetry.group.test.dependencies]
pytest = "^7.2.0"
pre-commit = "^2.20.0"


[[tool.poetry.source]]
name = "jax"
url = "https://storage.googleapis.com/jax-releases/jax_cuda_releases.html"
default = false
secondary = false

[build-system]
requires = ["poetry-core>=1.0.0"]
build-backend = "poetry.core.masonry.api"

[neersighted]

Not a bug; poetry add only handles simple constraints and does not manage multiple constraint versions. You should write out your platform-specific constraints by editing pyproject.toml.

[tbenthompson]

Thanks!

[UPDATE: the below does not actually work: #6956]

Just a note in case anyone finds this by searching. I was able to get I what I wanted with:

jax = [
    {extras = ["cpu"], version = "^0.3.23", platform = "darwin"},
    {extras = ["cuda"], version = "^0.3.23", platform = "linux"}
]

Without the extra = ["cpu"], I wasn't getting correct results. That is to say:

jax = [
    {version = "^0.3.23", platform = "darwin"},
    {extras = ["cuda"], version = "^0.3.23", platform = "linux"}
]

did not work even though pip install jax normally behaves identically to pip install jax[cpu]. I'm assuming that's probably some issue with how JAX specifies its dependencies.

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