migrate to hatchling build backend

.pre-commit-config.yaml

@@ -22,7 +22,6 @@ repos:
     rev: 6.0.0
     hooks:
     -   id: flake8
-        exclude: scm_hack_build_backend.py
 -   repo: https://github.com/asottile/pyupgrade
     rev: v3.3.1
     hooks:

scm_hack_build_backend.py → _own_version_helper.py

@@ -4,38 +4,16 @@
 """
 from __future__ import annotations
 
-import os
-import sys
-from pathlib import Path
-
-root = Path(__file__).parent
-sys.path.insert(0, os.fspath(root / "src"))
-
-from setuptools.build_meta import (  # type: ignore[attr-defined]
-    get_requires_for_build_wheel,
-    get_requires_for_build_sdist,
-    prepare_metadata_for_build_wheel,
-    build_wheel,
-    build_sdist,
-    get_requires_for_build_editable,
-    prepare_metadata_for_build_editable,
-    build_editable,
-)
-
-
+from setuptools_scm import Configuration
 from setuptools_scm import get_version
-from setuptools_scm.hacks import parse_pkginfo
 from setuptools_scm import git
 from setuptools_scm import hg
-from setuptools_scm.version import guess_next_dev_version, get_local_node_and_date
-from setuptools_scm import Configuration
-
+from setuptools_scm.hacks import parse_pkginfo
+from setuptools_scm.version import get_local_node_and_date
+from setuptools_scm.version import guess_next_dev_version
 from setuptools_scm.version import ScmVersion
 
 
-dynamic_version: str
-
-
 def parse(root: str, config: Configuration) -> ScmVersion | None:
     try:
         return parse_pkginfo(root, config)
@@ -45,16 +23,8 @@ def parse(root: str, config: Configuration) -> ScmVersion | None:
 
 def scm_version() -> str:
     return get_version(
-        root=str(root),
+        relative_to=__file__,
         parse=parse,
         version_scheme=guess_next_dev_version,
         local_scheme=get_local_node_and_date,
     )
-
-
-def __getattr__(name: str) -> str:
-    if name == "dynamic_version":
-        global dynamic_version
-        dynamic_version = scm_version()
-        return dynamic_version
-    raise AttributeError(name)

pyproject.toml

@@ -1,14 +1,14 @@
+
+
 [build-system]
-build-backend = "scm_hack_build_backend"
+build-backend = "hatchling.build"
 requires = [
+  "hatchling>=1.10",
   "packaging>=20",
   "setuptools>=55",
   'tomli; python_version < "3.11"',
   "typing_extensions",
 ]
-backend-path = [
-  ".",
-]
 
 [project]
 name = "setuptools-scm"
@@ -90,8 +90,8 @@ pip-egg-info = "setuptools_scm.hacks:parse_pip_egg_info"
 "python-simplified-semver" = "setuptools_scm.version:simplified_semver_version"
 "release-branch-semver" = "setuptools_scm.version:release_branch_semver_version"
 
-[tool.setuptools.dynamic]
-version = {attr = "scm_hack_build_backend.dynamic_version"}
-
-[tool.setuptools.packages.find]
-where = ["src"]
+[tool.hatch.version]
+source = "code"
+path = "_own_version_helper.py"
+search-paths = ["src"]
+expression = "scm_version()"