gnu: Add python-pydantic-1.

* gnu/packages/python-xyz.scm (python-pydantic-1): New variable.

Change-Id: Ifc4b64d7c1b34a083c35a0cad6be8da4d7e6c20b
Signed-off-by: Rutherther <rutherther@ditigal.xyz>

gnu/packages/python-xyz.scm

@@ -10108,6 +10108,33 @@ which can produce feeds in RSS 2.0, RSS 0.91, and Atom formats.")
 errors when data is invalid.")
     (license license:expat)))
 
+(define-public python-pydantic-1
+  (package
+    (inherit python-pydantic)
+    (name "python-pydantic")
+    (version "1.10.19")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+              (url "https://github.com/samuelcolvin/pydantic")
+              (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "0swcpfq1y0h5dcj82idls8k5la4xh4c0vz47y7jci2qass8gjffc"))))
+    (build-system pyproject-build-system)
+    (arguments
+     (list
+      #:test-flags
+      ;; One test fails with  not equal assertion.
+      #~(list "--deselect=tests/test_validators.py::test_assert_raises_validation_error")))
+    (native-inputs
+     (list python-pytest
+           python-pytest-mock
+           python-setuptools))
+    (propagated-inputs
+     (list python-typing-extensions))))
+
 (define-public python-pydantic-2
   (package
     (inherit python-pydantic)