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BLD/DEV: switch to meson-python and pixi-build #583

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13 changes: 13 additions & 0 deletions .gitattributes
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# Excluding files from an sdist generated by meson-python
#########################################################

# Note: when adding to this list, be aware that you need to commit your changes
# before they take effect (can be confusing during testing)

.github/* export-ignore
.git* export-ignore
codecov.yml export-ignore
pixi.lock export-ignore
RELEASING.md export-ignore
renovate.json export-ignore

# GitHub syntax highlighting
pixi.lock linguist-language=YAML linguist-generated=true
4 changes: 2 additions & 2 deletions RELEASING.md
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1. Update the version in `src/array_api_extra/__init__.py`
1. Update the version in `pyproject.toml`, `meson.build`, and `src/array_api_extra/__init__.py`
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@lucascolley lucascolley Jan 6, 2026

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up to 3 sources now, I don't think pixi-build is smart enough to handle dynamic versioning yet. But I think it's okay.

2. Update the lockfile with `pixi update; pixi install`
3. Push your changes
4. Cut a release via the GitHub GUI
5. Update the version to `{next micro version}.dev0`
5. Update the version to `{next micro version}.dev0` in `pyproject.toml`, `meson.build`, and `src/array_api_extra/__init__.py`
6. `pixi clean cache --pypi; pixi update; pixi install`
7. Push your changes
8. Merge the automated PR to conda-forge/array-api-extra-feedstock
39 changes: 39 additions & 0 deletions meson.build
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project(
'array-api-extra',
version: '0.10.0.dev0'
)

py = import('python').find_installation(pure: false)

# NOTE: downstream projects may rely on this variable name when vendoring,
# do not change it without consulting with downstream projects
sources = {
'array_api_extra': files(
'src/array_api_extra/__init__.py',
'src/array_api_extra/_delegation.py',
'src/array_api_extra/testing.py',
),
'array_api_extra/_lib': files(
'src/array_api_extra/_lib/__init__.py',
'src/array_api_extra/_lib/_at.py',
'src/array_api_extra/_lib/_backends.py',
'src/array_api_extra/_lib/_funcs.py',
'src/array_api_extra/_lib/_lazy.py',
'src/array_api_extra/_lib/_testing.py',
),
'array_api_extra/_lib/_utils': files(
'src/array_api_extra/_lib/_utils/__init__.py',
'src/array_api_extra/_lib/_utils/_compat.py',
'src/array_api_extra/_lib/_utils/_compat.pyi',
'src/array_api_extra/_lib/_utils/_helpers.py',
'src/array_api_extra/_lib/_utils/_typing.py',
'src/array_api_extra/_lib/_utils/_typing.pyi',
),
}

foreach subdir, files : sources
py.install_sources(files, subdir: subdir)
endforeach

subdir('tests')
subdir('vendor_tests')
584 changes: 495 additions & 89 deletions pixi.lock
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90 changes: 52 additions & 38 deletions pyproject.toml
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@@ -1,16 +1,18 @@
[build-system]
requires = ["hatchling"]
build-backend = "hatchling.build"
requires = ["meson-python"]
build-backend = "mesonpy"

[project]
name = "array-api-extra"
version = "0.10.0.dev0"
authors = [
{ name = "Lucas Colley", email = "lucas.colley8@gmail.com" },
# { name = "Open Source Contributors" }, # https://github.com/pypi/warehouse/issues/14813
]
description = "Extra array functions built on top of the array API standard."
readme = "README.md"
license.file = "LICENSE"
license = "MIT"
license-files = ["LICENSE"]
requires-python = ">=3.11"
classifiers = [
"Intended Audience :: Developers",
Expand All @@ -24,33 +26,67 @@ classifiers = [
"Programming Language :: Python :: Free Threading :: 3 - Stable",
"Typing :: Typed",
]
dynamic = ["version"]
dependencies = ["array-api-compat>=1.12.0,<2"]

[project.urls]
Homepage = "https://github.com/data-apis/array-api-extra"
"Bug Tracker" = "https://github.com/data-apis/array-api-extra/issues"
Changelog = "https://github.com/data-apis/array-api-extra/releases"

# Hatch

[tool.hatch]
version.path = "src/array_api_extra/__init__.py"

[tool.hatch.build.targets.sdist]
exclude = ["codecov.yml", "pixi.lock", "RELEASING.md", "renovate.json"]

#  Pixi
# Pixi

[tool.pixi.workspace]
channels = ["https://prefix.dev/conda-forge"]
platforms = ["linux-64", "osx-64", "osx-arm64", "win-64"]
preview = ["pixi-build"]

### array-api-extra package definition ###

[tool.pixi.package.build.backend]
name = "pixi-build-python"
version = "*"

[tool.pixi.package.host-dependencies]
meson-python = "*"
uv = "*" # interfaces with meson-python instead of pip

[tool.pixi.package.run-dependencies]
array-api-compat = "*"

### workspace environments ###

[tool.pixi.environments]
default = { features = ["py313"], solve-group = "py313" }
lint = { features = ["py313", "lint"], solve-group = "py313" }
docs = { features = ["py313", "docs"], solve-group = "py313" }
tests = { features = ["py313", "tests"], solve-group = "py313" }
tests-py313 = { features = ["py313", "tests"], solve-group = "py313" } # alias of tests
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@lucascolley lucascolley Jan 6, 2026

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this is just moved up from below, it is clearer to keep environment definitions at the top IMO


# Some backends may pin numpy; use separate solve-group
dev = { features = ["py313", "lint", "tests", "docs", "dev", "backends"], solve-group = "backends" }
tests-backends = { features = ["py313", "tests", "backends"], solve-group = "backends" }
tests-backends-py311 = { features = ["py311", "tests", "backends"] }

# CUDA not available on free github actions and on some developers' PCs
dev-cuda = { features = ["py313", "lint", "tests", "docs", "dev", "backends", "cuda-backends"], solve-group = "cuda" }
tests-cuda = { features = ["py313", "tests", "backends", "cuda-backends"], solve-group = "cuda" }
tests-cuda-py311 = { features = ["py311", "tests", "backends", "cuda-backends"] }

# Ungrouped environments
tests-numpy1 = ["py311", "tests", "numpy1"]
tests-py311 = ["py311", "tests"]
tests-nogil = ["nogil", "tests"]

### default feature definition ###

[tool.pixi.dev]
# this pulls in array-api-extra's host and run dependencies
array-api-extra.path = "."

[tool.pixi.dependencies]
array-api-compat = ">=1.12.0,<2"
array-api-extra.path = "."
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@lucascolley lucascolley Jan 6, 2026

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ideally we wouldn't need both of these, I have asked offline


[tool.pixi.pypi-dependencies]
array-api-extra = { path = ".", editable = true }
### non-default feature definitions ###

[tool.pixi.feature.lint.dependencies]
typing-extensions = ">=4.15.0"
Expand Down Expand Up @@ -197,28 +233,6 @@ dask-core = ">=2025.12.0" # No distributed, tornado, etc.
# sparse = "*" # numba not available on Python 3.13t yet
# jax = "*" # ml_dtypes not available on Python 3.13t yet

[tool.pixi.environments]
default = { features = ["py313"], solve-group = "py313" }
lint = { features = ["py313", "lint"], solve-group = "py313" }
docs = { features = ["py313", "docs"], solve-group = "py313" }
tests = { features = ["py313", "tests"], solve-group = "py313" }
tests-py313 = { features = ["py313", "tests"], solve-group = "py313" } # alias of tests

# Some backends may pin numpy; use separate solve-group
dev = { features = ["py313", "lint", "tests", "docs", "dev", "backends"], solve-group = "backends" }
tests-backends = { features = ["py313", "tests", "backends"], solve-group = "backends" }
tests-backends-py311 = { features = ["py311", "tests", "backends"] }

# CUDA not available on free github actions and on some developers' PCs
dev-cuda = { features = ["py313", "lint", "tests", "docs", "dev", "backends", "cuda-backends"], solve-group = "cuda" }
tests-cuda = { features = ["py313", "tests", "backends", "cuda-backends"], solve-group = "cuda" }
tests-cuda-py311 = { features = ["py311", "tests", "backends", "cuda-backends"] }

# Ungrouped environments
tests-numpy1 = ["py311", "tests", "numpy1"]
tests-py311 = ["py311", "tests"]
tests-nogil = ["nogil", "tests"]

# pytest

[tool.pytest.ini_options]
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12 changes: 12 additions & 0 deletions tests/meson.build
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py.install_sources([
'__init__.py',
'conftest.py',
'test_at.py',
'test_funcs.py',
'test_helpers.py',
'test_lazy.py',
'test_testing.py',
'test_version.py',
],
subdir: 'array_api_extra/tests'
)
7 changes: 7 additions & 0 deletions vendor_tests/meson.build
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py.install_sources([
'__init__.py',
'_array_api_compat_vendor.py',
'test_vendor.py',
],
subdir: 'array_api_extra/vendor_tests'
)