build-system-task-ordering

{"bytes_written": 11257, "dirs_created": true}

{"output": "Example 1: {\"order\":[\"all\",\"build\",\"clean\",\"compile\",\"link\"],\"cycles\":[]}\nExample 2: {\"order\":[\"e2e\",\"integration\",\"unit\",\"test\"],\"cycles\":[]}\nExample 3: {\"order\":[\"build\",\"compile\",\"alpha\",\"zebra\"],\"cycles\":[]}\nExample 4: {\"order\":[\"a\",\"b\",\"c\"],\"cycles\":[[\"a\",\"b\",\"c\"]]}", "exit_code": 0, "error": null}

Let me test the solution with the provided examples:

→ terminal({"command": "cd /app && python3 -c \"\nfrom solution import solve\n\n# Example 1: Basic Alias Canonicalization\nlines1 = '''TARGET build\nAlias = compile link\nDepends = all\nTARGET compile\nBefore = clean'''.strip().split('\\n')\nprint('Example 1:', solve(lines1))\n\n# Example 2: Override Ordering\nlines2 = '''TARGET test\nPhony = yes\nDepends = unit\nOVERRIDE test 20\nPhony = no\nAfter = integra…)

{"bytes_written": 11681, "dirs_created": true}

I see several issues. Let me analyze:

1. **Example 1**: The expected output is `{"order":["all","compile","clean"],"cycles":[]}` but I'm getting all 5 targets. The issue is that `build`, `compile`, and `link` should all canonicalize to `compile`, and then `all` should appear as well. But the expected output only shows 3 targets - this means that after canonicalization, some targets are being deduplicated in the output.

2. **Example 3**: Expected `{"order":["compile","alpha"],"cycles":[]}` but I'm getting all 4 targets. Same issue - after canonicalization, `zebra`, `alpha`, and `build` all map to `alpha`.

The key insight is that after canonicalization, the universe should only contain unique canonical names. Let me re-read the problem more carefully...

Actually, looking at the expected outputs more carefully:
- Example 1: `build`, `compile`, `link` all canonicalize to `compile`, so the universe should have `all`, `compile`, `clean` (3 targets)
- Example 3: `zebra`, `alpha`, `build` all canonicalize to `alpha`, so the universe should have `compile`, `alpha` (2 targets)

So the universe should be the set of canonical names, not the original names. Let me fix this:

→ write_file({"path": "/app/solution.py", "content": "def solve(lines: list[str]) -> str:\n    # Phase 1: Input Parsing and Validation\n    target_order = []  # list of (name, directives) in appearance order\n    override_blocks = []  # list of (name, override_id, directives)\n    \n    i = 0\n    while i < len(lines):\n        line = lines[i]\n        stripped = line.strip()\n        \n        # Skip blank li…)

{"output": "Example 1: {\"order\":[\"all\",\"build\",\"clean\"],\"cycles\":[]}\nExample 2: {\"order\":[\"e2e\",\"integration\",\"unit\",\"test\"],\"cycles\":[]}\nExample 3: {\"order\":[\"compile\",\"alpha\"],\"cycles\":[]}\nExample 4: {\"order\":[\"a\",\"b\",\"c\"],\"cycles\":[[\"a\",\"b\",\"c\"]]}", "exit_code": 0, "error": null}