diff --git a/pkgs/by-name/gi/git/package.nix b/pkgs/by-name/gi/git/package.nix
index 0706590fe968..671100e76947 100644
--- a/pkgs/by-name/gi/git/package.nix
+++ b/pkgs/by-name/gi/git/package.nix
@@ -166,6 +166,11 @@ stdenv.mkDerivation (finalAttrs: {
       substituteInPlace "$x" \
         --subst-var-by ssh "${openssh}/bin/ssh"
     done
+  ''
+  + lib.optionalString (rustSupport && (stdenv.buildPlatform != stdenv.hostPlatform)) ''
+    substituteInPlace Makefile \
+      --replace-fail "RUST_TARGET_DIR = target/" \
+                     "RUST_TARGET_DIR = target/${stdenv.hostPlatform.rust.rustcTargetSpec}/"
   '';
 
   nativeBuildInputs = [
@@ -207,10 +212,16 @@ stdenv.mkDerivation (finalAttrs: {
     libsecret
   ];
 
-  # required to support pthread_cancel()
-  env.NIX_LDFLAGS =
-    lib.optionalString (stdenv.cc.isGNU && stdenv.hostPlatform.libc == "glibc") "-lgcc_s"
-    + lib.optionalString (stdenv.hostPlatform.isFreeBSD) "-lthr";
+  env = {
+    # required to support pthread_cancel()
+    NIX_LDFLAGS =
+      lib.optionalString (stdenv.cc.isGNU && stdenv.hostPlatform.libc == "glibc") "-lgcc_s"
+      + lib.optionalString (stdenv.hostPlatform.isFreeBSD) "-lthr";
+  }
+  // lib.attrsets.optionalAttrs (rustSupport && (stdenv.buildPlatform != stdenv.hostPlatform)) {
+    # Rust cross-compilation
+    CARGO_BUILD_TARGET = stdenv.hostPlatform.rust.rustcTargetSpec;
+  };
 
   configureFlags = [
     "ac_cv_prog_CURL_CONFIG=${lib.getDev curl}/bin/curl-config"