Switch Python to unstable and add pydantic-ai

Pydantic-ai is an agent framework that seems simple and good: well-typed with
pydantic, tool usage is just an `@tool` decorator on a function, and so
on. While building these I realized there were some deps they needed that were
already in nixpkgs unstable, so I just switched to that instead of trying to
backport all the versions and stuff.

1 files changed, 45 insertions, 0 deletions

diff --git a/Omni/Bild/Deps/pydantic-graph.nix b/Omni/Bild/Deps/pydantic-graph.nix
new file mode 100644
index 0000000..e2797b9
--- /dev/null
+++ b/Omni/Bild/Deps/pydantic-graph.nix
@@ -0,0 +1,45 @@
+{
+  lib,
+  buildPythonPackage,
+  hatchling,
+  pydantic,
+  logfire-api,
+  httpx,
+  opentelemetry-api,
+  pythonOlder,
+  sources,
+}:
+buildPythonPackage rec {
+  pname = "pydantic-graph";
+  version = sources.pydantic-ai.version;
+  pyproject = true;
+  disabled = pythonOlder "3.8";
+  src = sources.pydantic-ai;
+  sourceRoot = "pydantic-ai-src/pydantic_graph";
+  build-system = [hatchling];
+  dependencies = [
+    pydantic
+    logfire-api
+    httpx
+    opentelemetry-api
+  ];
+  nativeCheckInputs = [
+    pydantic
+    logfire-api
+    httpx
+  ];
+  pythonRelaxDeps = true;
+  postPatch = ''
+    substituteInPlace pyproject.toml \
+      --replace-fail ', "uv-dynamic-versioning>=0.7.0"' "" \
+      --replace-fail 'dynamic = ["version"]' 'version = "${version}"'
+  '';
+  pythonImportsCheck = ["pydantic_graph"];
+  meta = {
+    description = "PydanticAI core logic with minimal required dependencies.";
+    homepage = "https://github.com/pydantic/pydantic-ai";
+    changelog = "https://github.com/pydantic/pydantic-ai/releases/tag/v${version}";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [bsima];
+  };
+}