diff --git a/pkgs/by-name/ha/hawkeye/package.nix b/pkgs/by-name/ha/hawkeye/package.nix
index 36d883ccdc56..6ffc0cc3f428 100644
--- a/pkgs/by-name/ha/hawkeye/package.nix
+++ b/pkgs/by-name/ha/hawkeye/package.nix
@@ -16,7 +16,8 @@ rustPackages.rustPlatform.buildRustPackage rec {
     hash = "sha256-VfJWj9BwNVR7RVUW+CjFuaniyiEath1U0F/7QJcA3r4=";
   };
 
-  cargoHash = "sha256-tTXoxWjcTtEcRcuSs0ewCN1VJYmTIKRgL3s7QSYt7sk=";
+  useFetchCargoVendor = true;
+  cargoHash = "sha256-SJEl5QsO4KYRv+5xDPHy1Q53qcL89IJ9JTXtzubO5fk=";
 
   nativeBuildInputs = [
     pkg-config
diff --git a/pkgs/development/compilers/llvm/common/libc/default.nix b/pkgs/development/compilers/llvm/common/libc/default.nix
index f57239b7a978..2ba098da2814 100644
--- a/pkgs/development/compilers/llvm/common/libc/default.nix
+++ b/pkgs/development/compilers/llvm/common/libc/default.nix
@@ -60,7 +60,7 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   postInstall = lib.optionalString (!isFullBuild) ''
-    substituteAll ${./libc-shim.so} $out/lib/libc.so
+    substituteAll ${./libc-shim.tpl} $out/lib/libc.so
   '';
 
   libc = if (!isFullBuild) then stdenv.cc.libc else null;
diff --git a/pkgs/development/compilers/llvm/common/libc/libc-shim.so b/pkgs/development/compilers/llvm/common/libc/libc-shim.tpl
similarity index 100%
rename from pkgs/development/compilers/llvm/common/libc/libc-shim.so
rename to pkgs/development/compilers/llvm/common/libc/libc-shim.tpl