should work

modules/python.nix

@@ -19,7 +19,7 @@
       customPkgs.python-pymatting
       customPkgs.python-opencv-headless
       customPkgs.python-rembg
-      customPkgs.pythonPackages.numpy-1 # should force the monkeypatch'd numpy
+      customPkgs.pythonPackages.numpy # should force the monkeypatch'd numpy
       i3ipc
       pandas
       matplotlib

pkgs/default.nix

@@ -11,20 +11,26 @@
     };
   });
 
+  customPython = pkgs.python311.override {
+    packageOverrides = self: super: {
+      numpy = numpy-1;
+    };
+  };
+  customPythonPackages = customPython.pkgs;
 in {
+  inherit numpy-1 customPythonPackages;
+
   fish-rust = pkgs.callPackage ./fish-rust {};
 
   python-rembg = pkgs.callPackage ./python-rembg {
     inherit lib;
     fetchPypi = pkgs.fetchPypi;
-    python311Packages = numpy-1;
-
+    python311Packages = customPythonPackages;
     python-pymatting = pkgs.callPackage ./python-pymatting {
       inherit lib;
       fetchPypi = pkgs.fetchPypi;
-      python311Packages = numpy-1;
+      python311Packages = customPythonPackages;
     };
-
     python-opencv-headless = pkgs.callPackage ./python-opencv-headless {
       inherit lib;
       fetchPypi = pkgs.fetchPypi;
@@ -32,12 +38,13 @@ in {
       pkg-config = pkgs.pkg-config;
       stdenv = pkgs.stdenv;
       makeWrapper = pkgs.makeWrapper;
-      python311Packages = numpy-1;
+      python311Packages = customPythonPackages;
     };
   };
 
   python-ngx-lsp = pkgs.callPackage ./python-nginx-language-server {
     inherit lib;
     fetchFromGitHub = pkgs.fetchFromGitHub;
+    python311Packages = customPythonPackages;
   };
 }

pkgs/python-nginx-language-server/default.nix

@@ -2,17 +2,21 @@
   lib,
   python311Packages,
   fetchFromGitHub,
+  pkgs,
 }: let
-  cusPydantic = python311Packages.pydantic.overridePythonAttrs (oldAttrs: rec {
+  cusPydantic = python311Packages.buildPythonPackage {
+    pname = "pydantic";
     version = "1.10.18";
-    src = fetchFromGitHub {
-      owner = "pydantic";
-      repo = "pydantic";
-      rev = "v${version}";
-      sha256 = "17v4y4l7bq8716y0vxv817n68k8rlc2sfa86a1jiala04s1jsmr0";
+    format = "wheel";
+    src = pkgs.fetchurl {
+      url = "https://files.pythonhosted.org/packages/py3/p/pydantic/pydantic-1.10.18-py3-none-any.whl";
+      sha256 = "10iaggdy69wk6qkagqcnlsqchrsidvqhgh68r5p78lpw3yw8k886";
     };
     doCheck = false;
-  });
+    propagatedBuildInputs = with python311Packages; [
+      typing-extensions
+    ];
+  };
 in
   python311Packages.buildPythonPackage rec {
     pname = "nginx-language-server";