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feat(scripts): add Python check-prerequisites PoC (#3302)
* feat(scripts): add Python check-prerequisites PoC * fix(scripts): address check-prerequisites parity feedback * test(scripts): label PowerShell prerequisite parity cases --------- Co-authored-by: root <kinsonnee@gmail.com>
This commit is contained in:
WOLIKIMCHENG
207
scripts/python/check_prerequisites.py
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207
scripts/python/check_prerequisites.py
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#!/usr/bin/env python3
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"""Consolidated prerequisite checking script."""
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from __future__ import annotations
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import json
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import sys
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from dataclasses import dataclass
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from pathlib import Path
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try:
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from common import FeaturePaths, format_speckit_command, get_feature_paths
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except ImportError: # pragma: no cover - direct execution from unusual cwd
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sys.path.insert(0, str(Path(__file__).resolve().parent))
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from common import FeaturePaths, format_speckit_command, get_feature_paths
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def _json_line(payload: object) -> str:
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return json.dumps(payload, ensure_ascii=False, separators=(",", ":")) + "\n"
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HELP_TEXT = """Usage: check_prerequisites.py [OPTIONS]
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Consolidated prerequisite checking for Spec-Driven Development workflow.
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OPTIONS:
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--json Output in JSON format
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--require-tasks Require tasks.md to exist (for implementation phase)
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--include-tasks Include tasks.md in AVAILABLE_DOCS list
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--paths-only Only output path variables (no prerequisite validation)
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--help, -h Show this help message
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EXAMPLES:
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# Check task prerequisites (plan.md required)
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./check_prerequisites.py --json
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# Check implementation prerequisites (plan.md + tasks.md required)
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./check_prerequisites.py --json --require-tasks --include-tasks
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# Get feature paths only (no validation)
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./check_prerequisites.py --paths-only
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"""
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@dataclass(frozen=True)
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class Args:
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json_mode: bool = False
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require_tasks: bool = False
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include_tasks: bool = False
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paths_only: bool = False
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def _parse_args(argv: list[str]) -> Args:
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json_mode = False
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require_tasks = False
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include_tasks = False
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paths_only = False
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for arg in argv:
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if arg == "--json":
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json_mode = True
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elif arg == "--require-tasks":
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require_tasks = True
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elif arg == "--include-tasks":
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include_tasks = True
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elif arg == "--paths-only":
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paths_only = True
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elif arg in {"--help", "-h"}:
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sys.stdout.write(HELP_TEXT)
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raise SystemExit(0)
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else:
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print(
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f"ERROR: Unknown option '{arg}'. Use --help for usage information.",
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file=sys.stderr,
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)
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raise SystemExit(1)
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return Args(
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json_mode=json_mode,
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require_tasks=require_tasks,
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include_tasks=include_tasks,
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paths_only=paths_only,
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)
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def _dir_has_entries(path: Path) -> bool:
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try:
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return path.is_dir() and any(path.iterdir())
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except OSError:
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return False
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def _available_docs(paths: FeaturePaths, include_tasks: bool) -> list[str]:
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docs: list[str] = []
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if paths.research.is_file():
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docs.append("research.md")
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if paths.data_model.is_file():
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docs.append("data-model.md")
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if _dir_has_entries(paths.contracts_dir):
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docs.append("contracts/")
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if paths.quickstart.is_file():
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docs.append("quickstart.md")
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if include_tasks and paths.tasks.is_file():
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docs.append("tasks.md")
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return docs
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def _print_paths_only(paths: FeaturePaths, json_mode: bool) -> None:
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if json_mode:
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sys.stdout.write(
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_json_line(
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{
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"REPO_ROOT": str(paths.repo_root),
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"BRANCH": paths.current_branch,
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"FEATURE_DIR": str(paths.feature_dir),
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"FEATURE_SPEC": str(paths.feature_spec),
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"IMPL_PLAN": str(paths.impl_plan),
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"TASKS": str(paths.tasks),
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}
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)
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)
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return
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print(f"REPO_ROOT: {paths.repo_root}")
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print(f"BRANCH: {paths.current_branch}")
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print(f"FEATURE_DIR: {paths.feature_dir}")
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print(f"FEATURE_SPEC: {paths.feature_spec}")
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print(f"IMPL_PLAN: {paths.impl_plan}")
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print(f"TASKS: {paths.tasks}")
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def _check_file(path: Path, description: str) -> None:
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marker = "✓" if path.is_file() else "✗"
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print(f" {marker} {description}")
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def _check_dir(path: Path, description: str) -> None:
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marker = "✓" if _dir_has_entries(path) else "✗"
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print(f" {marker} {description}")
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def _print_text_results(paths: FeaturePaths, include_tasks: bool) -> None:
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print(f"FEATURE_DIR:{paths.feature_dir}")
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print("AVAILABLE_DOCS:")
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_check_file(paths.research, "research.md")
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_check_file(paths.data_model, "data-model.md")
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_check_dir(paths.contracts_dir, "contracts/")
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_check_file(paths.quickstart, "quickstart.md")
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if include_tasks:
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_check_file(paths.tasks, "tasks.md")
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def main(argv: list[str] | None = None) -> int:
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args = _parse_args(list(argv if argv is not None else sys.argv[1:]))
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try:
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paths = get_feature_paths(
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no_persist=args.paths_only,
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script_file=Path(__file__),
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)
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except SystemExit as exc:
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if exc.code == 0:
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return 0
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print("ERROR: Failed to resolve feature paths", file=sys.stderr)
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return int(exc.code) if isinstance(exc.code, int) else 1
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if args.paths_only:
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_print_paths_only(paths, args.json_mode)
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return 0
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if not paths.feature_dir.is_dir():
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print(f"ERROR: Feature directory not found: {paths.feature_dir}", file=sys.stderr)
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print(
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f"Run {format_speckit_command('specify', paths.repo_root)} first to create the feature structure.",
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file=sys.stderr,
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)
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return 1
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if not paths.impl_plan.is_file():
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print(f"ERROR: plan.md not found in {paths.feature_dir}", file=sys.stderr)
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print(
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f"Run {format_speckit_command('plan', paths.repo_root)} first to create the implementation plan.",
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file=sys.stderr,
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)
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return 1
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if args.require_tasks and not paths.tasks.is_file():
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print(f"ERROR: tasks.md not found in {paths.feature_dir}", file=sys.stderr)
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print(
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f"Run {format_speckit_command('tasks', paths.repo_root)} first to create the task list.",
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file=sys.stderr,
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)
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return 1
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docs = _available_docs(paths, args.include_tasks)
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if args.json_mode:
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sys.stdout.write(
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_json_line({"FEATURE_DIR": str(paths.feature_dir), "AVAILABLE_DOCS": docs})
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)
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else:
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_print_text_results(paths, args.include_tasks)
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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