Added repro_env_break debugging command. This spawn a terminal inside the temp home folder with the same environment as the python test

pkgs/clan-cli/clan_cli/debug.py

@@ -0,0 +1,66 @@
+from typing import Dict, Optional, Tuple, Callable, Any, Mapping, List
+from pathlib import Path
+import ipdb
+import os
+import stat
+import subprocess
+from .dirs import find_git_repo_root
+import multiprocessing as mp
+from .types import FlakeName
+import logging
+import sys
+import shlex
+import time
+
+log = logging.getLogger(__name__)
+
+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(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()
+
+    # Error checking
+    if "bash" in env["SHELL"]:
+        raise Exception("I assumed you use zsh, not bash")
+
+    # Cmd appending
+    args = ["xterm", "-e", "zsh", "-df"]
+    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:
+        ipdb.set_trace()
+    finally:
+        proc.terminate()
+
+def write_command(command: str, loc:Path) -> None:
+    with open(loc, "w") as f:
+        f.write("#!/usr/bin/env bash\n")
+        f.write(command)
+    st = os.stat(loc)
+    os.chmod(loc, st.st_mode | stat.S_IEXEC)
+
+def spawn_process(func: Callable, **kwargs:Any) -> mp.Process:
+    mp.set_start_method(method="spawn")
+    proc = mp.Process(target=func, kwargs=kwargs)
+    proc.start()
+    return proc
+
+
+def dump_env(env: Dict[str, str], loc: Path) -> None:
+    cenv = env.copy()
+    with open(loc, "w") as f:
+        f.write("#!/usr/bin/env bash\n")
+        for k, v in cenv.items():
+            if v.count('\n') > 0 or v.count("\"") > 0 or v.count("'") > 0:
+                continue
+            f.write(f"export {k}='{v}'\n")
+    st = os.stat(loc)
+    os.chmod(loc, st.st_mode | stat.S_IEXEC)