spawn_tor: catch OSError and wrap as ClanError

pkgs/clan-cli/clan_lib/network/tor/lib.py

@@ -43,6 +43,7 @@ def spawn_tor() -> Iterator[None]:
     cmd_args = ["tor", "--HardwareAccel", "1"]
     packages = ["tor"]
     cmd = nix_shell(packages, cmd_args)
+    try:
         process = Popen(cmd)
         try:
             while not is_tor_running():
@@ -55,6 +56,9 @@ def spawn_tor() -> Iterator[None]:
             process.terminate()
             process.wait()
             log.info("Tor process terminated")
+    except OSError as e:
+        msg = f"Failed to spawn tor process with command: {cmd}"
+        raise ClanError(msg) from e
 
 
 @dataclass(frozen=True)