config.rust: update references from rustc

`rustc.config` is called `rust.rustcTarget` now, and
`{rustc -> rust}.platform`.

This is the new way (tm), and is preferred since
https://github.com/NixOS/nixpkgs/pull/271707 -
though the documentation still is outdated, and some expressions in
nixpkgs were using the old interface.

This updates both.

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/systems/examples.nix b/lib/systems/examples.nix
index 79ec4461e4193..6a9427b2d9de7 100644
--- a/lib/systems/examples.nix
+++ b/lib/systems/examples.nix
@@ -59,7 +59,7 @@ rec {
 
   armv7a-android-prebuilt = {
     config = "armv7a-unknown-linux-androideabi";
-    rustc.config = "armv7-linux-androideabi";
+    rust.rustcTarget = "armv7-linux-androideabi";
     sdkVer = "28";
     ndkVer = "24";
     useAndroidPrebuilt = true;
@@ -67,7 +67,7 @@ rec {
 
   aarch64-android-prebuilt = {
     config = "aarch64-unknown-linux-android";
-    rustc.config = "aarch64-linux-android";
+    rust.rustcTarget = "aarch64-linux-android";
     sdkVer = "28";
     ndkVer = "24";
     useAndroidPrebuilt = true;
@@ -207,7 +207,7 @@ rec {
   aarch64-embedded = {
     config = "aarch64-none-elf";
     libc = "newlib";
-    rustc.config = "aarch64-unknown-none";
+    rust.rustcTarget = "aarch64-unknown-none";
   };
 
   aarch64be-embedded = {