build(python): migrate to uv (#5222)

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "Sunshine"
-dynamic = ["version"]
+version = "0.0.0"
 description = "Helper scripts for Sunshine"
 requires-python = ">=3.14"
 license = {text = "GPL-3.0-only"}
@@ -14,19 +14,19 @@ authors = [
 
 dependencies = []
 
-[project.optional-dependencies]
+[dependency-groups]
 # glad2 declares Jinja2>=2.7,<4.0 as a dependency, so installing it pulls in jinja2 transitively.
 # The platform marker limits this to Linux where the glad generator is actually used.
 glad = [
-    "glad2 @ file:./third-party/glad",
+    "glad2",
     # setuptools provides pkg_resources which glad's plugin.py imports.
-    # setuptools >= 81 removed pkg_resources; pin to the last series that includes it.
+    # setuptools 82 removes pkg_resources; pin to the last series that includes it.
     "setuptools<82",
 ]
 
 flatpak = [
-    "flatpak_node_generator @ file:./packaging/linux/flatpak/deps/flatpak-builder-tools/node",
-    "flatpak_pip_generator @ file:./packaging/linux/flatpak/deps/flatpak-builder-tools/pip",
+    "flatpak_node_generator",
+    "flatpak_pip_generator",
 ]
 
 lint = [
@@ -46,3 +46,11 @@ test = [
 Homepage = "https://app.lizardbyte.dev/Sunshine"
 Repository = "https://github.com/LizardByte/Sunshine"
 Issues = "https://github.com/LizardByte/Sunshine/issues"
+
+[tool.setuptools]
+py-modules = []
+
+[tool.uv.sources]
+flatpak_node_generator = { path = "packaging/linux/flatpak/deps/flatpak-builder-tools/node" }
+flatpak_pip_generator = { path = "packaging/linux/flatpak/deps/flatpak-builder-tools/pip" }
+glad2 = { path = "third-party/glad" }