René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Agent config to discourage code being placed in similar layers with mixed abstractions","articleBody":"In #1595, we encountered this:\n\n```\n prerequisites = set(_HOOK_ORDER[:hook_idx])\n        postrequisites = set(_HOOK_ORDER[hook_idx + 1 :])\n\n        pipeline = series(*existing_hooks)\n        adder = Adder(\n            pipeline=pipeline,\n            step=hook_config.id,\n            prerequisites=prerequisites,\n            postrequisites=postrequisites,\n            force_linear=True,\n        )\n        result = adder.add()\n\n        # With force_linear=True, solution is a flat Series of strings.\n        flat = result.solution.root\n        idx = flat.index(hook_config.id)\n        predecessor: str | None = None\n        if idx \u003e 0:\n            prev_item = flat[idx - 1]\n            assert isinstance(prev_item, str)\n            predecessor = prev_item\n\n        model.repos = insert_repo(\n            repo_to_insert=repo,\n            existing_repos=model.repos,\n            predecessor=predecessor,\n        )\n```\n\nThis is suspicious because it starts to access `result.solution.root` and operate on it at quite a low level (accessing indexes, performing instance checks, etc.)\n\nAs a general principle, we should avoid accessing attributes of objects with too deep nesting. We should either identify a layer where it already belongs (e.g. in this case, the pipeweld layer from whence the `result` object comes from, and add an interface to access the lower-level information; or better yet, to consider the logic which is _using_ the lower level information and move it into the lower layer.\n\nIt will always be moving things into lower layers - if we are accessing low-level attributes via deep nesting, it's a sign the logic is in the wrong place. We should update the agent skills accordingly.","author":{"url":"https://github.com/nathanjmcdougall","@type":"Person","name":"nathanjmcdougall"},"datePublished":"2026-04-01T10:33:50.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/1711/usethis-python/issues/1711"}