71`$ sudo snap install scc`
72
73▶*NB* Snap installed applications cannot run outside of `/home` <https://askubuntu.com/questions/930437/permission-denied-error-when-running-apps-installed-as-snap-packages-ubuntu-17> so you may encounter issues if you use snap and attempt to run outside this directory.
74
75#### Homebrew
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542- 75% (High Density): Very terse, expressive code. Every line counts. (Example: Clojure, Haskell)
543- 60% - 70% (Standard): A healthy balance of logic and structural ceremony. (Example: Java, Python)
544▶- < 55% (High Boilerplate): High repetition. Likely due to mandatory error handling, auto-generated code, or verbose configuration. (Example: C#, CSS)
545
546See <https://boyter.org/posts/boilerplate-tax-ranking-popular-languages-by-density/> for more details.
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746| `--no-fold-authors` | off | Disable the name + email-domain identity folding fallback applied after `.mailmap`. |
747
748▶`--hotspots` is mutually exclusive with `--by-author` / `--timeline`; combining them is an error. With `--by-author` set, `--timeline` switches from the author rollup to the author timeline. Alone, `--timeline` renders the languages timeline.
749
750#### Hotspots - `--hotspots`
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839- `.gitignore` is already applied by git when each commit was recorded; `.ignore` / `.sccignore` are honoured by the engine (disable with `--no-ignore` / `--no-scc-ignore`).
840- Merge commits are diffed against their first parent (`git log --first-parent` semantics).
841▶- Rename detection uses go-git's similarity heuristic; large renames may inflate hotspot churn and reset blame attribution. Shallow clones produce a clear error rather than a panic.
842- `Lines±` is the sum of added and removed lines, so files rewritten in place count twice the displaced size.
843- Symlinks are skipped (v1). Binary detection is unchanged.
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1518If you are running `scc` in a low memory environment < 512 MB of RAM you may need to set `--file-gc-count` to a lower value such as `0` to force the garbage collector to be on at all times.
1519
1520▶A sign that this is required will be `scc` crashing with panic errors.
1521
1522### Tests