By the numbers

Data collected on 2026-04-30 from git rev-parse HEAD = 6a2096608ecafe76a0b87a6f876e4f786b2157f5.

Size

xychart-beta horizontal
    title "Lines by language (top categories)"
    x-axis ["Markdown (docs+repo)", "Rust (src/)", "JSON (schemas, etc.)", "Shell (init scripts)", "TOML"]
    y-axis "Lines of code" 0 --> 160000
    bar [156982, 50370, 17076, 854, 2540]

Category	Files	Lines
Rust source under src/	244	50,370
Per-module Rust files (src/modules/*.rs)	99	~24,800
Per-module config Rust files (src/configs/*.rs)	109	4,516
Top-level Rust files (src/*.rs)	11	5,574
Shell init scripts (src/init/starship.*)	10	854
Markdown docs (excludes node_modules)	many	156,982 (mostly translations under docs/<locale>/)
TOML configs (incl. Cargo.toml, presets, manifests)	17	2,540
YAML files (CI, codecov, crowdin, …)	12	small
Generated .github/config-schema.json	1	~5,800

The largest single source files are all individual modules:

File	Lines
src/modules/git_status.rs	2,299
src/modules/directory.rs	1,909
src/modules/package.rs	1,710
src/modules/kubernetes.rs	1,642
src/modules/aws.rs	1,295
src/modules/rust.rs	953
src/modules/status.rs	887
src/modules/git_metrics.rs	883
src/modules/custom.rs	822

The smallest are stubs like src/modules/line_break.rs (16 lines) and src/configs/line_break.rs (10 lines).

Module count

Count	What
100	Entries in ALL_MODULES (src/module.rs)
99	Module files in src/modules/ (excluding mod.rs, utils/)
109	Config files in src/configs/
12	Built-in presets in docs/public/presets/toml/
10	Supported shells (Bash, Zsh, Fish, PowerShell, Cmd, Nushell, Elvish, Ion, Tcsh, Xonsh)

Why are there more configs than modules? Some configs cover the multi-language modules (c and cc, vlang config in v.rs, golang config in go.rs, rlang config in rlang.rs), and some are split out for shared structures.

Activity

Window	Commits
All time (since 2019-04-01)	4,236
Last 90 days	131

Top files by churn in the last 90 days:

File	Commits
Cargo.lock	72
Cargo.toml	67
.github/workflows/spell-check.yml	11
.github/workflows/release.yml	11
docs/package-lock.json	10
docs/config/README.md	9
.github/workflows/format-workflow.yml	7
.github/config-schema.json	6
.github/workflows/publish-docs.yml	5
src/context.rs	3
src/print.rs	2
src/modules/git_status.rs	2

Most churn comes from automated dependency updates (Renovate touching Cargo.lock and Cargo.toml) and CI workflow tuning. Source code outside dependency updates is changed selectively.

Bot-attributed commits

These author identities account for substantial portions of the history:

Author	Commits	Share of all commits
renovate[bot]	1,308	30.9%
dependabot[bot]	322	7.6%
dependabot-preview[bot] (legacy)	283	6.7%
allcontributors[bot]	83	2.0%
github-actions[bot]	41	1.0%

Total bot-author commits: ~2,037 / 4,236 = 48.1% of commits in git history.

This counts only commits where the author is a bot. AI-assisted edits (Copilot, Claude) by human authors leave no signal in git history. There are also 882 commits with a Co-authored-by trailer (mostly Renovate and Dependabot grouping).

Complexity

Average lines per Rust file in src/modules/ is approximately 250. The distribution is heavily right-skewed: a handful of huge modules (git_status, directory, package) and many small ones (most toolchain modules sit at 100-300 lines).

The deepest import chains are inside the formatter (src/formatter/string_formatter.rs) and the directory module (src/modules/directory.rs), both of which use a fair amount of internal helper modules.

TODOs in source

grep -rn 'TODO\|FIXME\|HACK' over src/ finds 16 occurrences. Notable themes:

• Git modules waiting on gix features: sparse-index trees, staged-change detection, reftables (src/modules/git_metrics.rs, src/modules/git_status.rs, src/modules/git_state.rs).
• Cleanup hinges on a future starship 2.0: deprecated kubernetes alias keys (src/modules/kubernetes.rs), Fennel config alias (src/configs/fennel.rs).
• Standard-library readiness: recv_deadline once stable (src/context.rs).

See Cleanup opportunities for the full list.

Test surface

Almost every module has its own #[cfg(test)] mod tests { ... } block at the bottom of its .rs file. Test code is interleaved with production code in the same file (Rust convention), so the line counts above include tests.

Tests that need real binaries on PATH (hg, git, real package managers) are gated behind #[ignore] and CI runs them with cargo test --include-ignored.

Bus factor

Top human contributors over the lifetime of the project (excluding bots):

Author	Commits
Matan Kushner	623
David Knaack	317
Thomas O'Donnell	127
Kevin Song	60
Dario Vladović	44
Shu Kutsuzawa	32
Zhenhui Xie	23

In the last 90 days, the same names dominate human contributions, with David Knaack and Shu Kutsuzawa most active. The project is community-driven; no single person carries a high percentage of recent work.