Fixed test_webui only failing in nix_sandbox

pkgs/clan-cli/clan_cli/debug.py

@@ -5,6 +5,7 @@ import shlex
 import stat
 import subprocess
 import sys
+import time
 from pathlib import Path
 from typing import Any, Callable, Dict, List, Optional
 
@@ -17,7 +18,42 @@ def command_exec(cmd: List[str], work_dir: Path, env: Dict[str, str]) -> None:
     subprocess.run(cmd, check=True, env=env, cwd=work_dir.resolve())
 
 
-def repro_env_break(
+def block_for_input() -> None:
+    log = logging.getLogger(__name__)
+    procid = os.getpid()
+    command = f"echo 'continue' > /sys/proc/{procid}/fd/{sys.stdin.fileno()}"
+
+    while True:
+        log.warning("Use sudo cntr attach <pid> to attach to the container.")
+        log.warning("Resume execution by executing '%s' in cntr shell", command)
+        res = input("Input 'continue' to resume execution: ")
+        if res == "continue":
+            break
+        time.sleep(1)
+    log.info("Resuming execution.")
+
+
+def breakpoint_container(
+    work_dir: Path,
+    env: Optional[Dict[str, str]] = None,
+    cmd: Optional[List[str]] = None,
+) -> None:
+    if env is None:
+        env = os.environ.copy()
+    else:
+        env = env.copy()
+
+    dump_env(env, work_dir / "env.sh")
+
+    if cmd is not None:
+        log.debug("Command: %s", shlex.join(cmd))
+        mycommand = shlex.join(cmd)
+        write_command(mycommand, work_dir / "cmd.sh")
+
+    block_for_input()
+
+
+def breakpoint_shell(
     work_dir: Path,
     env: Optional[Dict[str, str]] = None,
     cmd: Optional[List[str]] = None,
@@ -32,7 +68,6 @@ def repro_env_break(
     if cmd is not None:
         mycommand = shlex.join(cmd)
         write_command(mycommand, work_dir / "cmd.sh")
-        print(f"Adding to zsh history the command: {mycommand}", file=sys.stderr)
     proc = spawn_process(func=command_exec, cmd=args, work_dir=work_dir, env=env)
 
     try:
@@ -42,6 +77,7 @@ def repro_env_break(
 
 
 def write_command(command: str, loc: Path) -> None:
+    log.info("Dumping command to %s", loc)
     with open(loc, "w") as f:
         f.write("#!/usr/bin/env bash\n")
         f.write(command)
@@ -53,13 +89,14 @@ def spawn_process(func: Callable, **kwargs: Any) -> mp.Process:
     if mp.get_start_method(allow_none=True) is None:
         mp.set_start_method(method="spawn")
 
-    proc = mp.Process(target=func, kwargs=kwargs)
+    proc = mp.Process(target=func, name="python-debug-process", kwargs=kwargs)
     proc.start()
     return proc
 
 
 def dump_env(env: Dict[str, str], loc: Path) -> None:
     cenv = env.copy()
+    log.info("Dumping environment variables to %s", loc)
     with open(loc, "w") as f:
         f.write("#!/usr/bin/env bash\n")
         for k, v in cenv.items():