move to a pyproject.toml-based build configuration (xarray-contrib#219)

* move to a `pyproject.toml`-based configuration

* move the `flake8` configuration to a separate file

* move `isort` and `mypy` configuration to `pyproject.toml`

* update the `isort` version to avoid the install error

* install the currently checked-out version of datatree [skip-ci]

* install xarray from conda-forge

* fix the install path

Author: keewis

.flake8

@@ -0,0 +1,15 @@
+[flake8]
+ignore =
+    # whitespace before ':' - doesn't work well with black
+    E203
+    # module level import not at top of file
+    E402
+    # line too long - let black worry about that
+    E501
+    # do not assign a lambda expression, use a def
+    E731
+    # line break before binary operator
+    W503
+exclude=
+    .eggs
+    doc

.git_archival.txt

@@ -0,0 +1,4 @@
+node: $Format:%H$
+node-date: $Format:%cI$
+describe-name: $Format:%(describe:tags=true)$
+ref-names: $Format:%D$

.pre-commit-config.yaml

@@ -10,7 +10,7 @@ repos:
       - id: check-yaml
   # isort should run before black as black sometimes tweaks the isort output
   - repo: https://github.com/PyCQA/isort
-    rev: 5.11.4
+    rev: 5.12.0
     hooks:
       - id: isort
   # https://github.com/python/black#version-control-integration

ci/doc.yml

@@ -18,8 +18,8 @@ dependencies:
   - ipython
   - h5netcdf
   - zarr
+  - xarray
   - pip:
-      - git+https://github.com/xarray-contrib/datatree
+      - -e ..
       - sphinxext-rediraffe
       - sphinxext-opengraph
-      - xarray>=2022.05.0.dev0

pyproject.toml

@@ -1,9 +1,37 @@
+[project]
+name = "xarray-datatree"
+description = "Hierarchical tree-like data structures for xarray"
+readme = "README.md"
+authors = [
+    {name = "Thomas Nicholas", email = "[email protected]"}
+]
+license = {text = "Apache-2"}
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Intended Audience :: Science/Research",
+    "Topic :: Scientific/Engineering",
+    "License :: OSI Approved :: Apache Software License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+]
+requires-python = ">=3.9"
+dependencies = [
+    "xarray >=2022.6.0",
+]
+dynamic = ["version"]
+
+[project.urls]
+Home = "https://github.com/xarray-contrib/datatree"
+Documentation = "https://xarray-datatree.readthedocs.io/en/stable/"
+
 [build-system]
 requires = [
-    "setuptools>=42",
+    "setuptools>=61.0.0",
     "wheel",
-    "setuptools_scm[toml]>=3.4",
-    "setuptools_scm_git_archive",
+    "setuptools_scm[toml]>=7.0",
     "check-manifest"
 ]
 
@@ -13,3 +41,20 @@ write_to_template = '''
 # Do not change! Do not track in version control!
 __version__ = "{version}"
 '''
+
+[tool.setuptools.packages.find]
+exclude = ["docs", "tests", "tests.*", "docs.*"]
+
+[tool.setuptools.package-data]
+datatree = ["py.typed"]
+
+[tool.isort]
+profile = "black"
+skip_gitignore = true
+float_to_top = true
+default_section = "THIRDPARTY"
+known_first_party = "datatree"
+
+[mypy]
+files = "datatree/**/*.py"
+show_error_codes = true