Add a toggle in the bar for microphone loopback

home.nix

@@ -50,6 +50,14 @@
       echo "$cwd"
     '';
 
+    ".bin/exec_on_stdin_newline".source = pkgs.writers.writePython3 "exec_on_stdin_newline" {} ''
+      # run command whjen a newline is added to stdin
+      import subprocess
+      from sys import stdin, argv
+      cmd = argv[1:]
+      while stdin.readline():
+          subprocess.call(cmd, shell=True)
+      '';
 
     ".bin/screenshot".source = (import ./bin/screenshot.nix) pkgs;