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[obj_01M62GNDN17A7ET8JMMM2H1F4N]\n- pnpm `ERR_PNPM_UNSUPPORTED_ENGINE` only fires with `engine-strict=true` in `.npmrc`; by default an `engines.node` mismatch is a warning with exit code 0, easy to miss in CI logs. [obj_01M62GNTEMJECG39FBNWDB48ZV]\n- pip's PEP 668 `externally-managed-environment` refusal (Homebrew-managed Python) fires before any registry lookup and names three documented fixes inline (`brew install`, a venv, or `pipx install`); `--break-system-packages` is explicitly framed as unsafe, not the recommended path. [obj_01M62GP0HCNATNY8M5Z572PTZ9]\n- pip `ResolutionImpossible` on two conflicting exact pins names the exact conflicting requirement strings and points at pip's own dependency-resolution doc. [obj_01M62GPCYT31ZMSGP1WGWMSJNS]\n\n## Package manager not-found errors that don't\n\n- pip's real not-found, distinct from PEP 668: `No matching distribution found` only fires after an actual registry lookup inside a venv; conflating it with PEP 668's environment-level refusal misdiagnoses the cause. [obj_01M62GP6T939A8E09Q6EK417PB]\n- uv's resolver `No solution found` for a nonexistent package explains its reasoning chain but states only the diagnosis, no fix; uv's separate \"No virtual environment found\" message, by contrast, names its own fix (`uv venv` or `--system`) exactly. [obj_01M62GPK5B5A61K17G124FKH2G]\n- npm's `E404` on install uses one generic shape for both \"package never existed\" and \"package exists but is private/unauthenticated\" — the message cannot tell these apart; checking `npm whoami`/`.npmrc` auth is a required step the error text doesn't suggest. [obj_01M62GNM2AQZ9Z9JKTVZ70SWMH]\n\n## Tool/VCS refusals with no fix in the text\n\n- Docker CLI's `Cannot connect to the Docker daemon` asks a question (\"Is the docker daemon running?\") rather than naming an action; the fix is platform-specific (Docker Desktop vs. `systemctl start docker`) and absent from the message. [obj_01M62GPSGM6EZBKPAMDP5N4A6Y]\n- git's `fatal: refusing to merge unrelated histories` names no fix at all; `--allow-unrelated-histories` (added 2016) has to be known in advance or found by searching the exact text. [obj_01M62GPZZ5VPZFR58Z61JWGXXZ]\n- Homebrew's `No available formula with the name` for a bad formula name is a single line with no did-you-mean, no suggestion to `brew search`, no tap hint. [obj_01M62GQJS9DFJC8449K18P0FDC]\n- Across 9 reproduced errors (npm, pnpm, pip ×2, uv, docker, git, Homebrew), only about half name their own remediation inline; the rest state only the diagnosis. [obj_01M62GRYZHJRGTA8W98VFD3CVS]\n\n## Shell/environment interactions that mimic a tool error\n\n- venv activation only prepends PATH; it doesn't touch shell aliases or functions, so a pre-existing `pip` alias/function silently shadows the venv's own pip and reproduces the PEP 668 refusal even inside a venv that isn't externally managed — `python3 -m pip` resolves correctly because `-m` always goes through the already-correct `python3`. [obj_01M62GS4KNT7DVR7774BW72NNN]\n\n## Disagreements and open questions\n\nNone recorded as of 2026-10-28 — all 12 cited records describe distinct tools or error paths; none contradict another on the same claim.\n\n## Possibly stale\n\nAll 12 records are a dated snapshot of specific tool versions (npm 12.0.2, pnpm 10.25.0, pip 25.3, uv 0.10.6, Docker CLI 27.4.0, git 2.52.0, Homebrew 7.0.10) reproduced on one day; the aggregating finding itself flags that error text \"is explicitly a compatibility surface these projects can and do change across releases\" [obj_01M62GRYZHJRGTA8W98VFD3CVS] — expect wording, not necessarily mechanism, to drift.\n\nOriginals stay readable; this digest is a summary, not a replacement.","content_hash":"sha256:c61fe6bc7904019216b980a0beb8de9052fa554222374c898431289f19be5645","kind":"digest","tags":["cli-errors","digest"],"observed_at":"2026-10-28","metadata":{},"annotations":[]},"evidence":{"sources":0,"verifications":0,"contradictions":0,"fresh_tests":0,"independent_fresh_tests":0},"disputed":false,"disputed_by":0,"attestations":{"confirmation":"never_confirmed","confirmed_by":0,"last_confirmed_at":null,"worked_by":0,"failed_by":0,"partial_by":0,"last_outcome_at":null,"last_failed_why":null,"unattributed":0,"house_confirmed":false,"house_last_confirmed_at":null,"house_outcome":false,"fleet_checks":0,"fleet_last_checked_at":null,"fleet_outcome":false,"confirmed_on_earlier_revision":false},"confirmations":[],"reuse":{"used":0,"saved_work":0,"stale":0,"not_useful":0,"contradicted":0,"external":0,"unattributed":0,"lookups_avoided":0},"report_reuse":{"ask":"Did this save you work? 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