diff --git a/pkgs/build-support/rust/build-rust-crate/build-crate.nix b/pkgs/build-support/rust/build-rust-crate/build-crate.nix
index 82560012d17b..37bf3ec26f77 100644
--- a/pkgs/build-support/rust/build-rust-crate/build-crate.nix
+++ b/pkgs/build-support/rust/build-rust-crate/build-crate.nix
@@ -7,7 +7,7 @@
   dependencies,
   crateFeatures, crateRenames, libName, release, libPath,
   crateType, metadata, crateBin, hasCrateBin,
-  extraRustcOpts,
+  extraRustcOpts, verbose, colors,
   buildTests,
   codegenUnits
 }:
@@ -40,7 +40,9 @@
       ++ (map (x: "--crate-type ${x}") crateType)
     );
 
-    binRustcOpts = lib.concatStringsSep " " baseRustcOpts;
+    binRustcOpts = lib.concatStringsSep " " (
+      baseRustcOpts
+    );
 
     build_bin = if buildTests then "build_bin_test" else "build_bin";
   in ''
diff --git a/pkgs/build-support/rust/build-rust-crate/default.nix b/pkgs/build-support/rust/build-rust-crate/default.nix
index ee96c873f54b..f6079b7316d6 100644
--- a/pkgs/build-support/rust/build-rust-crate/default.nix
+++ b/pkgs/build-support/rust/build-rust-crate/default.nix
@@ -300,7 +300,7 @@ crate_: lib.makeOverridable
           (crate.features ++ features)
         );
 
-      libName = crate.libName or crate.crateName;
+      libName = if crate ? libName then crate.libName else crate.crateName;
       libPath = lib.optionalString (crate ? libPath) crate.libPath;
 
       # Seed the symbol hashes with something unique every time.
@@ -329,7 +329,7 @@ crate_: lib.makeOverridable
       colors = lib.attrByPath [ "colors" ] "always" crate;
       extraLinkFlags = lib.concatStringsSep " " (crate.extraLinkFlags or [ ]);
       edition = crate.edition or null;
-      codegenUnits = crate.codegenUnits or 1;
+      codegenUnits = if crate ? codegenUnits then crate.codegenUnits else 1;
       extraRustcOpts =
         lib.optionals (crate ? extraRustcOpts) crate.extraRustcOpts
           ++ extraRustcOpts_
diff --git a/pkgs/build-support/rust/build-rust-package/default.nix b/pkgs/build-support/rust/build-rust-package/default.nix
index 905ec5b98c3b..9b2e62fc240a 100644
--- a/pkgs/build-support/rust/build-rust-package/default.nix
+++ b/pkgs/build-support/rust/build-rust-package/default.nix
@@ -34,6 +34,7 @@
 , buildInputs ? []
 , nativeBuildInputs ? []
 , cargoUpdateHook ? ""
+, cargoDepsHook ? ""
 , buildType ? "release"
 , meta ? {}
 , cargoLock ? null