Switch to pdm for building

Switch metadata to PEP 621

pyproject.toml

@@ -1,28 +1,31 @@
-[tool.poetry]
+[project]
 name = "jsonref"
-version = "1.0.1"
 description = "jsonref is a library for automatic dereferencing of JSON Reference objects for Python."
-authors = ["Chase Sterling <[email protected]>"]
-license = "MIT"
-readme = "README.md"
-packages = [
-    { include = "jsonref.py" },
-    { include = "proxytypes.py" },
+authors = [
+    {name = "Chase Sterling", email = "[email protected]"},
 ]
+license = {text = "MIT"}
+readme = "README.md"
+dynamic = ["version"]
+requires-python = ">=3.3"
+dependencies = []
+
+[project.urls]
 repository = "https://github.com/gazpachoking/jsonref"
 documentation = "https://jsonref.readthedocs.io/en/latest/"
 
-[tool.poetry.dependencies]
-python = ">=3.3"
+[tool.pdm.dev-dependencies]
+test = ["pytest>=7.1.3"]
 
-[tool.poetry.group.dev.dependencies]
-pytest = ">=7.1.3"
-
-[tool.poetry_bumpversion.file."jsonref.py"]
+[tool.pdm]
+version = { source = "file", path = "jsonref.py" }
+[tool.pdm.build]
+includes = ["jsonref.py", "proxytypes.py"]
 
 [build-system]
-requires = ["poetry-core >= 1.2.0"]
-build-backend = "poetry.core.masonry.api"
+requires = ["pdm-pep517>=1.0.0"]
+build-backend = "pdm.pep517.api"
 
 [tool.isort]
 profile = "black"
+