treewide: don't use rustPlatform.rust

This will be deprecated in the next commit.

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

@@ -4,6 +4,8 @@
 , buildPythonPackage
 , fetchPypi
 , rustPlatform
+, cargo
+, rustc
 , setuptools-rust
 , openssl
 , Security
@@ -58,7 +60,9 @@ buildPythonPackage rec {
   ] ++ [
     rustPlatform.cargoSetupHook
     setuptools-rust
-  ] ++ (with rustPlatform; [ rust.cargo rust.rustc ]);
+    cargo
+    rustc
+  ];
 
   buildInputs = [ openssl ]
     ++ lib.optionals stdenv.isDarwin [ Security libiconv ]