diff --git a/pkgs/development/compilers/rust/1_44.nix b/pkgs/development/compilers/rust/1_44.nix
index 9fc268d152b..17b93cf88eb 100644
--- a/pkgs/development/compilers/rust/1_44.nix
+++ b/pkgs/development/compilers/rust/1_44.nix
@@ -13,6 +13,7 @@
 , CoreFoundation, Security
 , llvmPackages_5
 , pkgsBuildTarget, pkgsBuildBuild
+, makeRustPlatform
 } @ args:
 
 import ./default.nix {
diff --git a/pkgs/development/compilers/rust/1_45.nix b/pkgs/development/compilers/rust/1_45.nix
index 1a634d3f51e..05db4520f65 100644
--- a/pkgs/development/compilers/rust/1_45.nix
+++ b/pkgs/development/compilers/rust/1_45.nix
@@ -13,6 +13,7 @@
 , CoreFoundation, Security
 , llvmPackages_5
 , pkgsBuildTarget, pkgsBuildBuild
+, makeRustPlatform
 } @ args:
 
 import ./default.nix {
diff --git a/pkgs/development/compilers/rust/default.nix b/pkgs/development/compilers/rust/default.nix
index d08b63dd643..c4aef566f8b 100644
--- a/pkgs/development/compilers/rust/default.nix
+++ b/pkgs/development/compilers/rust/default.nix
@@ -12,6 +12,7 @@
 , CoreFoundation, Security
 , llvmPackages_5
 , pkgsBuildTarget, pkgsBuildBuild
+, makeRustPlatform
 }: rec {
   toRustTarget = platform: with platform.parsed; let
     cpu_ = {
@@ -22,24 +23,6 @@
   in platform.rustc.config
     or "${cpu_}-${vendor.name}-${kernel.name}${lib.optionalString (abi.name != "unknown") "-${abi.name}"}";
 
-  makeRustPlatform = { rustc, cargo, ... }: rec {
-    rust = {
-      inherit rustc cargo;
-    };
-
-    fetchCargoTarball = buildPackages.callPackage ../../../build-support/rust/fetchCargoTarball.nix {
-      inherit cargo;
-    };
-
-    buildRustPackage = callPackage ../../../build-support/rust {
-      inherit rustc cargo fetchCargoTarball;
-    };
-
-    rustcSrc = callPackage ./rust-src.nix {
-      inherit rustc;
-    };
-  };
-
   # This just contains tools for now. But it would conceivably contain
   # libraries too, say if we picked some default/recommended versions from
   # `cratesIO` to build by Hydra and/or try to prefer/bias in Cargo.lock for
diff --git a/pkgs/development/compilers/rust/make-rust-platform.nix b/pkgs/development/compilers/rust/make-rust-platform.nix
new file mode 100644
index 00000000000..6a827cff9a1
--- /dev/null
+++ b/pkgs/development/compilers/rust/make-rust-platform.nix
@@ -0,0 +1,21 @@
+{ buildPackages, callPackage }:
+
+{ rustc, cargo, ... }:
+
+rec {
+  rust = {
+    inherit rustc cargo;
+  };
+
+  fetchCargoTarball = buildPackages.callPackage ../../../build-support/rust/fetchCargoTarball.nix {
+    inherit cargo;
+  };
+
+  buildRustPackage = callPackage ../../../build-support/rust {
+    inherit rustc cargo fetchCargoTarball;
+  };
+
+  rustcSrc = callPackage ./rust-src.nix {
+    inherit rustc;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 11b24dfc3f7..fd38e0126d2 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9659,7 +9659,8 @@ in
   rustPackages = rustPackages_1_45;
 
   inherit (rustPackages) cargo clippy rustc rustPlatform;
-  inherit (rust) makeRustPlatform;
+
+  makeRustPlatform = callPackage ../development/compilers/rust/make-rust-platform.nix {};
 
   buildRustCrate = callPackage ../build-support/rust/build-rust-crate { };
   buildRustCrateHelpers = callPackage ../build-support/rust/build-rust-crate/helpers.nix { };