chore: Update project dependencies and restructure requirements files

pyproject.toml

@@ -1,6 +1,6 @@
 [build-system]
-requires = ["hatchling>=1.25.0"]
+requires = ["setuptools>=69.0.0", "wheel>=0.43.0"]
-build-backend = "hatchling.build"
+build-backend = "setuptools.build_meta"
 
 [project]
 name = "arbitrade"
@@ -8,42 +8,23 @@ version = "0.1.0"
 description = "Low-latency Kraken arbitrage bot"
 readme = "README.md"
 requires-python = ">=3.12"
-dependencies = [
+dynamic = ["dependencies", "optional-dependencies"]
-  "cryptography>=43.0.0",
-  "duckdb>=1.1.0",
-  "fastapi>=0.115.0",
-  "httptools>=0.6.1",
-  "httpx>=0.28.0",
-  "jinja2>=3.1.0",
-  "keyring>=25.0.0",
-  "orjson>=3.10.0",
-  "pydantic>=2.9.0",
-  "pydantic-settings>=2.5.0",
-  "structlog>=24.4.0",
-  "sortedcontainers>=2.4.0",
-  "uvicorn[standard]>=0.31.0",
-  "uvloop>=0.20.0; platform_system != 'Windows'",
-  "websockets>=13.0",
-]
 
-[project.optional-dependencies]
+[tool.setuptools.dynamic]
-dev = [
+dependencies = {file = ["requirements/latest-runtime.in"]}
-  "black>=24.8.0",
+
-  "mypy>=1.11.0",
+[tool.setuptools.dynamic.optional-dependencies]
-  "pre-commit>=3.8.0",
+dev = {file = ["requirements/latest-dev.in"]}
-  "pytest>=8.3.0",
-  "pytest-asyncio>=0.24.0",
-  "respx>=0.21.1",
-  "ruff>=0.6.0",
-  "vcrpy>=6.0.0",
-]
 
 [project.scripts]
 arbitrade = "arbitrade.main:main"
 arbitrade-bench-detection = "arbitrade.detection.benchmark:main"
 
-[tool.hatch.build.targets.wheel]
+[tool.setuptools]
-packages = ["src/arbitrade"]
+package-dir = {"" = "src"}
+
+[tool.setuptools.packages.find]
+where = ["src"]
 
 [tool.black]
 line-length = 100

requirements/latest-dev.in

@@ -0,0 +1,9 @@
+# Unpinned dev dependencies (latest available)
+black
+mypy
+pre-commit
+pytest
+pytest-asyncio
+respx
+ruff
+vcrpy

requirements/latest-runtime.in

@@ -0,0 +1,16 @@
+# Unpinned runtime dependencies (latest available)
+cryptography
+duckdb
+fastapi
+httptools
+httpx
+jinja2
+keyring
+orjson
+pydantic
+pydantic-settings
+sortedcontainers
+structlog
+uvicorn[standard]
+uvloop ; platform_system != "Windows"
+websockets