oxicloud: remove target-cpu=native flag to make builds more portable

Co-authored-by: Darkone Linux <darkone@darkone.yt>

pkgs/by-name/ox/oxicloud/package.nix

@@ -29,6 +29,12 @@ rustPlatform.buildRustPackage (finalAttrs: {
 
   cargoBuildFlags = [ "--bin=oxicloud" ];
 
+  postPatch = ''
+    # Upstream pins `target-cpu=native`, making the binary non-portable
+    # (breaks the binary cache). Build for the generic baseline instead.
+    rm -f .cargo/config.toml
+  '';
+
   postInstall = ''
     mkdir -p $out/share/oxicloud
     cp -r static-dist $out/share/oxicloud/static