Revert "python3Packages.pydantic: 1.10.9 -> 2.3.0"

This reverts commit 1d1488d4c9cee70ae272b5a40ae925f95a44f71f.

Still too many incompatible reverse dependencies.

pkgs/development/python-modules/pydantic/default.nix

@@ -1,37 +1,46 @@
 { lib
+, stdenv
 , buildPythonPackage
-, fetchFromGitHub
-, pythonOlder
-
-# build-system
+, autoflake
 , cython
-, hatchling
-, hatch-fancy-pypi-readme
-
-# build
-, libxcrypt
-
-# dependencies
-, typing-extensions
-, annotated-types
-, pydantic-core
-
-# optional-dependencies
+, devtools
 , email-validator
-
-# tests
-, dirty-equals
-, faker
-, pytestCheckHook
-, pytest-benchmark
-, pytest-examples
+, fetchFromGitHub
+, fetchpatch
 , pytest-mock
+, pytestCheckHook
+, python-dotenv
+, pythonAtLeast
+, pythonOlder
+, pyupgrade
+, typing-extensions
+# dependencies for building documentation.
+# docs fail to build in Darwin sandbox: https://github.com/samuelcolvin/pydantic/issues/4245
+, withDocs ? (stdenv.hostPlatform == stdenv.buildPlatform && !stdenv.isDarwin && pythonAtLeast "3.10")
+, ansi2html
+, markdown-include
+, mike
+, mkdocs
+, mkdocs-exclude
+, mkdocs-material
+, mdx-truly-sane-lists
+, sqlalchemy
+, ujson
+, orjson
+, hypothesis
+, libxcrypt
 }:
 
 buildPythonPackage rec {
   pname = "pydantic";
-  version = "2.3.0";
-  format = "pyproject";
+  version = "1.10.9";
+  format = "setuptools";
+
+  outputs = [
+    "out"
+  ] ++ lib.optionals withDocs [
+    "doc"
+  ];
 
   disabled = pythonOlder "3.7";
 
@@ -39,54 +48,89 @@ buildPythonPackage rec {
     owner = "pydantic";
     repo = pname;
     rev = "refs/tags/v${version}";
-    hash = "sha256-toqrWg8bYzc3UmvG/YmXawfmT8nqaA9fxy24k1cdj+M=";
+    hash = "sha256-POqMxBJUFFS1TnO9h5W7jYwFlukBOng0zbtq4kzmMB4=";
   };
 
+  patches = [
+    # Fixes racy doctests build failures on really fast machines
+    # FIXME: remove after next release
+    (fetchpatch {
+      url = "https://github.com/pydantic/pydantic/pull/6103/commits/f05014a30340e608155683aaca17d275f93a0380.diff";
+      hash = "sha256-sr47hpl37SSFFbK+/h3hGlF6Pl6L8XPKDU0lZZV7Vzs=";
+    })
+  ];
+
+  postPatch = ''
+    sed -i '/flake8/ d' Makefile
+  '';
+
   buildInputs = lib.optionals (pythonOlder "3.9") [
     libxcrypt
   ];
 
   nativeBuildInputs = [
     cython
-    hatchling
-    hatch-fancy-pypi-readme
+  ] ++ lib.optionals withDocs [
+    # dependencies for building documentation
+    autoflake
+    ansi2html
+    markdown-include
+    mdx-truly-sane-lists
+    mike
+    mkdocs
+    mkdocs-exclude
+    mkdocs-material
+    sqlalchemy
+    ujson
+    orjson
+    hypothesis
   ];
 
   propagatedBuildInputs = [
-    annotated-types
+    devtools
+    pyupgrade
     typing-extensions
-    pydantic-core
   ];
 
   passthru.optional-dependencies = {
+    dotenv = [
+      python-dotenv
+    ];
     email = [
       email-validator
     ];
   };
 
-  pythonImportsCheck = [
-    "pydantic"
-  ];
-
   nativeCheckInputs = [
-    dirty-equals
-    faker
-    pytest-benchmark
-    pytest-examples
     pytest-mock
     pytestCheckHook
   ] ++ lib.flatten (lib.attrValues passthru.optional-dependencies);
 
   pytestFlagsArray = [
-    "--benchmark-disable"
+    # https://github.com/pydantic/pydantic/issues/4817
+    "-W" "ignore::pytest.PytestReturnNotNoneWarning"
   ];
 
   preCheck = ''
     export HOME=$(mktemp -d)
   '';
 
+  # Must include current directory into PYTHONPATH, since documentation
+  # building process expects "import pydantic" to work.
+  preBuild = lib.optionalString withDocs ''
+    PYTHONPATH=$PWD:$PYTHONPATH make docs
+  '';
+
+  # Layout documentation in same way as "sphinxHook" does.
+  postInstall = lib.optionalString withDocs ''
+    mkdir -p $out/share/doc/$name
+    mv ./site $out/share/doc/$name/html
+  '';
+
   enableParallelBuilding = true;
 
+  pythonImportsCheck = [ "pydantic" ];
+
   meta = with lib; {
     description = "Data validation and settings management using Python type hinting";
     homepage = "https://github.com/pydantic/pydantic";