roc: alpha3 -> alpha4 (#441799)

pkgs/by-name/ro/roc/package.nix

@@ -17,7 +17,7 @@
 
 let
   llvmPackages = llvmPackages_18;
-  rocVersion = "alpha3";
+  rocVersion = "alpha4";
 in
 
 rustPlatform.buildRustPackage rec {
@@ -27,8 +27,8 @@ rustPlatform.buildRustPackage rec {
   src = fetchFromGitHub {
     owner = "roc-lang";
     repo = "roc";
-    rev = "9a0238e0f34c09e27e3ca89e8fc5a684a21bf456";
-    hash = "sha256-iM16DlTf+1yXBZVH7QqzhKuSkn1n/ZDosnZj3t+io0E=";
+    rev = "d73ea109cc21442da01387c1e5e911607c74692d";
+    hash = "sha256-pPnOM4hpbAkGCV47aw5eHbpOujjFtJa3v/3/D8gybO8=";
   };
 
   nativeBuildInputs = [
@@ -51,7 +51,7 @@ rustPlatform.buildRustPackage rec {
     stdenv.cc.cc.lib
   ];
 
-  cargoHash = "sha256-9cOJ79GrnrMEIhFikvCfXa2SI4O0fy50cr4Fb6p4Vho=";
+  cargoHash = "sha256-wJViSHcezoIchWe4Py9j+9U+YJUA5ja/x94UipuWO2g=";
 
   # prevents zig AccessDenied error github.com/ziglang/zig/issues/6810
   XDG_CACHE_HOME = "xdg_cache";