diff --git a/hosts/common/programs/flare-signal.nix b/hosts/common/programs/flare-signal.nix
index b2bb1f02..f39595f1 100644
--- a/hosts/common/programs/flare-signal.nix
+++ b/hosts/common/programs/flare-signal.nix
@@ -2,13 +2,15 @@
 # UI is effectively a clone of Fractal.
 # compatibility:
 # - desko: works fine. pairs, and exchanges contact list (but not message history) with the paired device. exchanges future messages fine.
-# - moby (cross compiled): nope. it pairs, but can only *receive* messages and never *send* them.
+# - moby (cross compiled flare-signal-nixified): nope. it pairs, but can only *receive* messages and never *send* them.
 #   - even `rsync`ing the data and keyrings from desko -> moby, still fails in that same manner.
 #   - console shows error messages. quite possibly an endianness mismatch somewhere
+# - moby (partially-emulated flare-signal): works! pairs and can send/receive messages, same as desko.
 { pkgs, ... }:
 {
   sane.programs.flare-signal = {
-    package = pkgs.flare-signal-nixified;
+    # package = pkgs.flare-signal-nixified;
+    package = pkgs.flare-signal;
     persist.private = [
       # everything: conf, state, files, all opaque
       ".local/share/flare"
diff --git a/overlays/cross.nix b/overlays/cross.nix
index f30ae613..7ef86955 100644
--- a/overlays/cross.nix
+++ b/overlays/cross.nix
@@ -562,6 +562,11 @@ in {
     };
   });
 
+  flare-signal = prev.flare-signal.override {
+    # fixes "cargo:warning=aarch64-unknown-linux-gnu-gcc: error: unrecognized command-line option ‘-m64’"
+    inherit (emulated) cargo meson rustc rustPlatform stdenv;
+  };
+
   flare-signal-nixified = prev.flare-signal-nixified.override {
     # N.B. blueprint-compiler is in nativeBuildInputs.
     # the trick here is to force the aarch64 versions to be used during build (via emulation).