add PDM package manager support

Author: smdex

.pdm.toml

@@ -0,0 +1,2 @@
+[python]
+path = "/home/smaximov/.asdf/shims/python"

__pypackages__/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

pyproject.toml

@@ -51,9 +51,33 @@ isort = "^5.9.3"
 async_generator = {version = "*", python = "~3.6"}
 async-exit-stack = {version = "*", python = "~3.6"}
 
+
+[tool.pdm]
+allow_prereleases = true
+[tool.pdm.dev-dependencies]
+dev = [
+    "pytest<7.0.0,>=6.2.4",
+    "mypy==0.930",
+    "flake8<4.0.0,>=3.9.2",
+    "black<22.0.0,>=21.5-beta.1; python_version >= \"3.7\" and python_version < \"4.0\"",
+    "mkdocs<2.0.0,>=1.2.1",
+    "mkdocs-material<9.0.0,>=8.1.4",
+    "mdx-include<2.0.0,>=1.4.1",
+    "coverage[toml]<6.0,>=5.5",
+    "fastapi<1.0.0,>=0.68.0",
+    "requests<3.0.0,>=2.26.0",
+    "autoflake<2.0,>=1.4",
+    "isort<6.0.0,>=5.9.3",
+    "async-generator; python_version >= \"3.6\" and python_version < \"4.0\"",
+    "async-exit-stack; python_version >= \"3.6\" and python_version < \"4.0\"",
+]
+
+[tool.pdm.build]
+includes = []
+excludes = ["sqlmodel/sql/expression.py.jinja2"]
 [build-system]
-requires = ["poetry-core"]
-build-backend = "poetry.core.masonry.api"
+requires = ["pdm-pep517>=1.0.0"]
+build-backend = "pdm.pep517.api"
 
 [tool.poetry-version-plugin]
 source = "init"
@@ -85,20 +109,39 @@ skip_glob = [
 [tool.mypy]
 # --strict
 disallow_any_generics = true
-disallow_subclassing_any = true 
-disallow_untyped_calls = true 
+disallow_subclassing_any = true
+disallow_untyped_calls = true
 disallow_untyped_defs = true
-disallow_incomplete_defs = true 
-check_untyped_defs = true 
-disallow_untyped_decorators = true 
+disallow_incomplete_defs = true
+check_untyped_defs = true
+disallow_untyped_decorators = true
 no_implicit_optional = true
-warn_redundant_casts = true 
+warn_redundant_casts = true
 warn_unused_ignores = true
-warn_return_any = true 
+warn_return_any = true
 implicit_reexport = false
 strict_equality = true
 # --strict end
 
 [[tool.mypy.overrides]]
 module = "sqlmodel.sql.expression"
 warn_unused_ignores = false
+
+[project]
+name = "sqlmodel"
+version = "0"
+description = "SQLModel, SQL databases in Python, designed for simplicity, compatibility, and robustness."
+authors = [
+    {name = "Sergii Maksymov", email = "[email protected]"},
+    {name = "Sebastián Ramírez",email = "[email protected]"}
+]
+dependencies = ["SQLAlchemy<1.5.0,>=1.4.17", "pydantic<2.0.0,>=1.8.2", "sqlalchemy2-stubs"]
+requires-python = ">=3.6.1,<4.0"
+license = {text = "MIT"}
+readme = "README.md"
+classifiers = ["Development Status :: 4 - Beta", "Framework :: AsyncIO", "Intended Audience :: Developers", "Intended Audience :: Science/Research", "Intended Audience :: System Administrators", "License :: OSI Approved :: MIT License", "Programming Language :: Python :: 3 :: Only", "Programming Language :: Python :: 3.6", "Programming Language :: Python :: 3.7", "Programming Language :: Python :: 3.8", "Programming Language :: Python :: 3.9", "Topic :: Database", "Topic :: Database :: Database Engines/Servers", "Topic :: Internet", "Topic :: Internet :: WWW/HTTP :: HTTP Servers", "Topic :: Internet :: WWW/HTTP", "Typing :: Typed"]
+
+[project.urls]
+homepage = "https://github.com/tiangolo/sqlmodel"
+repository = "https://github.com/tiangolo/sqlmodel"
+documentation = "https://sqlmodel.tiangolo.com"