bash wrapper

modules/bin-bash-wrapper.nix

@@ -0,0 +1,25 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  cfg = config.my.binBashWrapper;
+
+  bashWrapper = pkgs.writeShellScriptBin "bash" ''
+    exec /usr/bin/env bash "$@"
+  '';
+in
+{
+  cfg = {
+    enable = lib.mkEnableOption "create a /bin/bash wrapper";
+  };
+
+  config = lib.mkIf cfg.enable {
+    systemd.tmpfiles.rules = [
+      "L+ /bin/bash - - - - ${bashWrapper}/bin/bash"
+    ];
+  };
+}