DEV: add a basic Pixi workspace

[skip ci]

Author: lucascolley

.gitignore

@@ -130,3 +130,5 @@ dmypy.json
 
 # macOS specific iles
 .DS_Store
+
+pixi.lock

docs/dev/releasing.md

@@ -44,14 +44,14 @@
 
 - [ ] **Update the version.**
 
-  You must edit
+  You must edit both of
 
   ```
   array_api_compat/__init__.py
+  pyproject.toml
   ```
 
-  and update the version (the version is not computed from the tag because
-  that would break vendorability).
+  and update the version.
 
 - [ ] **Update the [changelog](../changelog.md).**
 

pyproject.toml

@@ -1,10 +1,10 @@
 [build-system]
-requires = ["setuptools", "setuptools-scm"]
+requires = ["setuptools"]
 build-backend = "setuptools.build_meta"
 
 [project]
 name = "array-api-compat"
-dynamic = ["version"]
+version = "1.13.0"
 description = "A wrapper around NumPy and other array libraries to make them compatible with the Array API standard"
 readme = "README.md"
 requires-python = ">=3.10"
@@ -54,13 +54,64 @@ dev = [
 homepage = "https://data-apis.org/array-api-compat/"
 repository = "https://github.com/data-apis/array-api-compat/"
 
-[tool.setuptools.dynamic]
-version = {attr = "array_api_compat.__version__"}
-
 [tool.setuptools.packages.find]
 include = ["array_api_compat*"]
 namespaces = false
 
+
+# Pixi
+
+[tool.pixi.workspace]
+channels = ["https://prefix.dev/conda-forge"]
+platforms = ["linux-64", "osx-arm64", "win-64"]
+preview = ["pixi-build"]
+
+### array-api-compat package definition ###
+
+[tool.pixi.package.build.backend]
+name = "pixi-build-python"
+version = "*"
+
+[tool.pixi.package.host-dependencies]
+setuptools = "*"
+
+### workspace environments ###
+
+[tool.pixi.environments]
+docs = ["docs"]
+tests = ["tests"]
+
+### default feature definition ###
+
+[tool.pixi.dev]
+# this pulls in array-api-compat's host dependencies
+array-api-compat.path = "."
+
+[tool.pixi.dependencies]
+array-api-compat.path = "."
+
+### non-default feature definitions ###
+
+[tool.pixi.feature.tests.dependencies]
+pytest = "*"
+array-api-strict = "*"
+numpy = "*"
+
+[tool.pixi.feature.tests.tasks]
+tests = { cmd = "pytest -v", description = "Run tests" }
+
+[tool.pixi.feature.docs.dependencies]
+furo = "*"
+linkify-it-py = "*"
+myst-parser = "*"
+sphinx = "*"
+sphinx-copybutton = "*"
+sphinx-autobuild = "*"
+
+[tool.pixi.feature.docs.tasks]
+docs = { cmd = "make html", cwd = "docs", description = "Build docs" }
+
+
 [tool.ruff.lint]
 preview = true
 select = [