1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/tools/rust/cargo-expand/default.nix b/nixpkgs/pkgs/development/tools/rust/cargo-expand/default.nix
index a51b972921da..86c322f7116c 100644
--- a/nixpkgs/pkgs/development/tools/rust/cargo-expand/default.nix
+++ b/nixpkgs/pkgs/development/tools/rust/cargo-expand/default.nix
@@ -18,6 +18,7 @@ rustPlatform.buildRustPackage rec {
 
   meta = with lib; {
     description = "A utility and Cargo subcommand designed to let people expand macros in their Rust source code";
+    mainProgram = "cargo-expand";
     homepage = "https://github.com/dtolnay/cargo-expand";
     changelog = "https://github.com/dtolnay/cargo-expand/releases/tag/${version}";
     license = with licenses; [ mit asl20 ];