What is ruff built with?

Q: Which repos have a stack like ruff's?

The ones that share most of its stack: astral-sh/uv, AppFlowy-IO/AppFlowy, and aaif-goose/goose.

ruff is a Rust repo. It makes its content with csv, zip, jinja2, and markdown, validates its data with schemars, is tested with libfuzzer-sys, insta, and quick-junit, and deploys with tracing, log, tracing-subscriber, console_log, fern, and 1 more. It has 988,162 written lines, with 2,138 test files.

Read on November 5, 2026, at commit d017c82. Read it as markdown

Frontend

Styles 2

Tailwind CSS
anstyle5 files

Interface 2

indicatif3 files
console1 file

Support

Content 4

jinja21 file
zip5 files
markdown1 file
csv

Validation 1

schemars31 files

Testing 3

insta85 files
quick-junit1 file
libfuzzer-sys

Deploy 6

tracing119 files
tracing-subscriber5 files
tracing-log1 file
log21 files
console_log2 files
fern1 file

Tools 21

lsp-server42 files
clap32 files
criterion1 file
Ruff1 file
Black
isort
pylint
ruff_python_ast
lsp-types99 files
is-macro25 files
syn14 files
proc-macro213 files

9 more

quote13 files
clap_complete_command2 files
phf_codegen1 file
rich-argparse1 file
tomli-w1 file
autopep8
flake8
pycodestyle
pyflakes

Other 81

smallvec49 files
path-absolutize7 files
icu_properties2 files
NumPy2 files
tikv-jemallocator2 files
icu_normalizer1 file
pandas1 file
rkyv1 file
termcolor1 file
anyhow237 files
rustc-hash205 files
itertools139 files

69 more

serde84 files
serde_json58 files
regex33 files
thiserror32 files
bitflags29 files
strum29 files
memchr28 files
compact_str21 files
colored20 files
tempfile17 files
rayon16 files
crossbeam15 files
toml14 files
strum_macros13 files
indexmap12 files
camino11 files
static_assertions11 files
similar8 files
unicode-normalization8 files
globset7 files
ignore7 files
shellexpand7 files
filetime6 files
glob6 files
thin-vec6 files
unicode-width6 files
hashbrown5 files
dashmap3 files
path-slash3 files
rand3 files
unicode-ident3 files
url3 files
aho-corasick2 files
bitvec2 files
bstr2 files
console_error_panic_hook2 files
etcetera2 files
jiff2 files
js-sys2 files
libc2 files
natord2 files
notify2 files
parking_lot2 files
regex-automata2 files
serde-wasm-bindgen2 files
toml_parser2 files
typed-arena2 files
unidiff2 files
walkdir2 files
wasm-bindgen2 files
web-time2 files
wild2 files
arc-swap1 file
arrayvec1 file
ctrlc1 file
dunce1 file
globwalk1 file
heck1 file
imara-diff1 file
mimalloc1 file
pathdiff1 file
phf1 file
regex-syntax1 file
same-file1 file
seahash1 file
stacker1 file
tomli1 file
uuid1 file
which1 file

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