Files

123 lines
3.5 KiB
Python
Executable File

#!/usr/bin/env python3
"""Run the repository's common Decman workflows with safe, fixed commands."""
from __future__ import annotations
import argparse
import shlex
import subprocess
import sys
from collections.abc import Callable, Sequence
from pathlib import Path
ROOT = Path(__file__).resolve().parents[1]
SCRIPTS = ROOT / "scripts"
def format_command(command: Sequence[str] | str) -> str:
"""Render a shell-safe command for diagnostic output."""
return command if isinstance(command, str) else shlex.join(command)
def run(command: Sequence[str]) -> None:
"""Print and run a command from the repository root."""
print(f"+ {format_command(command)}", file=sys.stderr)
subprocess.run(command, check=True, cwd=ROOT)
def run_script(name: str) -> None:
run([sys.executable, str(SCRIPTS / name)])
def verify() -> None:
"""Check the active profile's package and unit invariants."""
run_script("verify.py")
def dry_run() -> None:
"""Verify the configuration, then preview Decman's changes."""
verify()
run(["sudo", "decman", "--source", "source.py", "--dry-run", "--no-hooks"])
def apply() -> None:
"""Verify the configuration, then apply it without Decman hooks."""
verify()
run(["sudo", "decman", "--source", "source.py", "--no-hooks"])
def split_packages() -> None:
"""Regenerate concern package lists from explicit installed packages."""
run_script("split_packages.py")
def refresh_orphan_guards() -> None:
"""Regenerate dependency-orphan guards from installed packages."""
run_script("refresh_orphan_guards.py")
def refresh_package_state() -> None:
"""Regenerate package data and verify the resulting configuration."""
split_packages()
refresh_orphan_guards()
verify()
COMMANDS: dict[str, Callable[[], None]] = {
"verify": verify,
"dry-run": dry_run,
"apply": apply,
"split-packages": split_packages,
"refresh-orphan-guards": refresh_orphan_guards,
"refresh-package-state": refresh_package_state,
}
def failure_status(error: Exception) -> int | None:
"""Report a launch failure and return its shell-compatible status."""
if isinstance(error, subprocess.CalledProcessError):
status = error.returncode if error.returncode > 0 else 128 - error.returncode
print(
f"error: command exited with status {status}: {format_command(error.cmd)}",
file=sys.stderr,
)
return status
if isinstance(error, FileNotFoundError):
print(f"error: executable not found: {error.filename}", file=sys.stderr)
return 127
if isinstance(error, PermissionError):
print(f"error: executable is not permitted: {error.filename}", file=sys.stderr)
return 126
if isinstance(error, OSError):
print(
f"error: unable to execute {error.filename}: {error.strerror}",
file=sys.stderr,
)
return 126
return None
def main() -> int:
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument(
"command",
choices=COMMANDS,
help="workflow to run; apply and package-state commands modify system or files",
)
args = parser.parse_args()
try:
COMMANDS[args.command]()
except KeyboardInterrupt:
print("error: interrupted", file=sys.stderr)
return 130
except Exception as error:
status = failure_status(error)
if status is None:
raise
return status
return 0
if __name__ == "__main__":
raise SystemExit(main())