treewide: remove redundant rec

pkgs/development/compilers/rust/binary.nix

@@ -18,7 +18,7 @@ let
 in
 
 rec {
-  rustc = stdenv.mkDerivation rec {
+  rustc = stdenv.mkDerivation {
     name = "rustc-${versionType}-${version}";
 
     inherit version;
@@ -64,7 +64,7 @@ rec {
     setupHooks = ./setup-hook.sh;
   };
 
-  cargo = stdenv.mkDerivation rec {
+  cargo = stdenv.mkDerivation {
     name = "cargo-${versionType}-${version}";
 
     inherit version;

pkgs/development/compilers/rust/cargo.nix

@@ -3,7 +3,7 @@
 , CoreFoundation, Security
 }:
 
-rustPlatform.buildRustPackage rec {
+rustPlatform.buildRustPackage {
   name = "cargo-${rustc.version}";
   inherit (rustc) version src;
 

pkgs/development/compilers/rust/clippy.nix

@@ -1,5 +1,5 @@
 { stdenv, lib, rustPlatform, rustc, Security, patchelf }:
-rustPlatform.buildRustPackage rec {
+rustPlatform.buildRustPackage {
   name = "clippy-${rustc.version}";
   inherit (rustc) version src;
 

pkgs/development/compilers/rust/rls/default.nix

@@ -2,7 +2,7 @@
 , openssh, openssl, pkgconfig, cmake, zlib, curl, libiconv
 , CoreFoundation, Security }:
 
-rustPlatform.buildRustPackage rec {
+rustPlatform.buildRustPackage {
   pname = "rls";
   inherit (rustPlatform.rust.rustc) src version;