diff --git a/pkgs/build-support/rust/build-rust-package/default.nix b/pkgs/build-support/rust/build-rust-package/default.nix
index 95b6f357e56a8..27ab072d3ee07 100644
--- a/pkgs/build-support/rust/build-rust-package/default.nix
+++ b/pkgs/build-support/rust/build-rust-package/default.nix
@@ -127,7 +127,6 @@ stdenv.mkDerivation ((removeAttrs args [ "depsExtraArgs" "cargoUpdateHook" "carg
   ];
 
   buildInputs = buildInputs
-    ++ lib.optionals stdenv.hostPlatform.isDarwin [ libiconv ]
     ++ lib.optionals stdenv.hostPlatform.isMinGW [ windows.pthreads ];
 
   patches = cargoPatches ++ patches;
diff --git a/pkgs/development/compilers/rust/cargo.nix b/pkgs/development/compilers/rust/cargo.nix
index 01b219714382e..6a4d01de5ef42 100644
--- a/pkgs/development/compilers/rust/cargo.nix
+++ b/pkgs/development/compilers/rust/cargo.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, pkgsHostHost
 , file, curl, pkg-config, python3, openssl, cmake, zlib
 , installShellFiles, makeWrapper, cacert, rustPlatform, rustc
-, CoreFoundation, Security
+, libiconv, CoreFoundation, Security
 }:
 
 rustPlatform.buildRustPackage {
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage {
     (lib.getDev pkgsHostHost.curl)
   ];
   buildInputs = [ cacert file curl python3 openssl zlib ]
-    ++ lib.optionals stdenv.isDarwin [ CoreFoundation Security ];
+    ++ lib.optionals stdenv.isDarwin [ libiconv CoreFoundation Security ];
 
   # cargo uses git-rs which is made for a version of libgit2 from recent master that
   # is not compatible with the current version in nixpkgs.
diff --git a/pkgs/development/compilers/rust/rustc.nix b/pkgs/development/compilers/rust/rustc.nix
index 5fd3741607469..ce0dcf1613bfc 100644
--- a/pkgs/development/compilers/rust/rustc.nix
+++ b/pkgs/development/compilers/rust/rustc.nix
@@ -148,9 +148,11 @@ in stdenv.mkDerivation rec {
   ];
 
   buildInputs = [ openssl ]
-    ++ optionals stdenv.isDarwin [ libiconv Security ]
+    ++ optionals stdenv.isDarwin [ Security ]
     ++ optional (!withBundledLLVM) llvmShared;
 
+  depsTargetTargetPropagated = optionals stdenv.isDarwin [ libiconv ];
+
   outputs = [ "out" "man" "doc" ];
   setOutputFlags = false;