Switch packaging to hatch, get rid of setup.cfg

LICENSE

@@ -1,4 +1,3 @@
-
 The MIT License (MIT)
 
 Copyright (c) 2018 Valohai

pyproject.toml

@@ -1,9 +1,28 @@
 [build-system]
-requires = [
-    "setuptools>=42",
-    "wheel"
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "hai"
+dynamic = ["version"]
+description = "Toolbelt library"
+readme = "README.md"
+license = "MIT"
+requires-python = ">=3.7"
+authors = [
+    { name = "Valohai", email = "[email protected]" },
+]
+
+[project.urls]
+Homepage = "https://github.com/valohai/hai"
+
+[tool.hatch.version]
+path = "hai/__init__.py"
+
+[tool.hatch.build.targets.sdist]
+include = [
+    "/hai",
 ]
-build-backend = "setuptools.build_meta"
 
 [tool.mypy]
 strict = true
@@ -37,3 +56,6 @@ select = [
 ignore = [
     "E741", # Ambiguous variable name
 ]
+
+[tool.pytest.ini_options]
+norecursedirs = [".git", ".tox"]