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, 75 insertions, 0 deletions

diff --git a/Omni/Bild/Deps/pydantic-ai.nix b/Omni/Bild/Deps/pydantic-ai.nix
new file mode 100644
index 0000000..399649d
--- /dev/null
+++ b/Omni/Bild/Deps/pydantic-ai.nix
@@ -0,0 +1,75 @@
+{
+  lib,
+  buildPythonPackage,
+  hatchling,
+  pydantic-ai-slim,
+  pythonOlder,
+  pytest-vcr,
+  dirty-equals,
+  sources,
+  writeTextFile,
+}: let
+  version = sources.pydantic-ai.version;
+  pyproject_toml = writeTextFile {
+    name = "pyproject.toml";
+    text = ''
+      [build-system]
+      requires = ["hatchling"]
+      build-backend = "hatchling.build"
+
+      [project]
+      name = "pydantic-ai"
+      version = "${version}"
+      description = "Agent Framework / shim to use Pydantic with LLMs"
+      authors = [
+          { name = "Samuel Colvin", email = "samuel@pydantic.dev" },
+          { name = "Marcelo Trylesinski", email = "marcelotryle@gmail.com" },
+          { name = "David Montague", email = "david@pydantic.dev" },
+          { name = "Alex Hall", email = "alex@pydantic.dev" },
+      ]
+      license = "MIT"
+      readme = "README.md"
+      requires-python = ">=3.9"
+      dependencies = [
+        "pydantic-ai-slim[openai,vertexai,groq,anthropic,mistral,cohere,bedrock,cli,mcp,evals]==${version}",
+      ]
+
+      [project.urls]
+      Homepage = "https://ai.pydantic.dev"
+      Source = "https://github.com/pydantic/pydantic-ai"
+      Documentation = "https://ai.pydantic.dev"
+      Changelog = "https://github.com/pydantic/pydantic-ai/releases"
+
+      [project.scripts]
+      pai = "pydantic_ai._cli:app"
+    '';
+  };
+in
+  buildPythonPackage rec {
+    pname = "pydantic-ai";
+    inherit version;
+    pyproject = true;
+    disabled = pythonOlder "3.8";
+    src = sources.pydantic-ai;
+    build-system = [hatchling];
+    dependencies = [pydantic-ai-slim];
+    nativeCheckInputs = [
+      pydantic-ai-slim
+      pytest-vcr
+      dirty-equals
+      # pytestCheckHook
+    ];
+    preBuild = ''
+      cp ${pyproject_toml} ./pyproject.toml
+    '';
+    pythonImportsCheck = [
+      "pydantic_ai"
+    ];
+    meta = {
+      description = "Agent Framework / shim to use Pydantic with LLMs";
+      homepage = "https://github.com/pydantic/pydantic-ai";
+      changelog = "https://github.com/pydantic/pydantic-ai/releases/tag/v${version}";
+      license = lib.licenses.mit;
+      maintainers = with lib.maintainers; [bsima];
+    };
+  }