python3Packages.pip: 25.0.1 -> 25.3

https://pip.pypa.io/en/stable/news/#v25-3

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

@@ -6,8 +6,7 @@
 
   # build-system
   installShellFiles,
-  wheel,
-  setuptools,
+  flit-core,
 
   # docs
   sphinx,
@@ -32,14 +31,14 @@
 let
   self = buildPythonPackage rec {
     pname = "pip";
-    version = "25.0.1";
-    format = "pyproject";
+    version = "25.3";
+    pyproject = true;
 
     src = fetchFromGitHub {
       owner = "pypa";
       repo = "pip";
       tag = version;
-      hash = "sha256-V069rAL6U5KBnSc09LRCu0M7qQCH5NbMghVttlmIoRY=";
+      hash = "sha256-aHV4j9OMLD6I6Fe6A04bE7xk6eS5CxeUEw4Psqj7xz0=";
     };
 
     postPatch = ''
@@ -50,8 +49,6 @@ let
 
     nativeBuildInputs = [
       installShellFiles
-      setuptools
-      wheel
     ]
     ++ lib.optionals (pythonAtLeast "3.11") [
       # docs
@@ -60,6 +57,8 @@ let
       sphinx-issues
     ];
 
+    build-system = [ flit-core ];
+
     outputs = [
       "out"
     ]