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adler2/v2/04-Jul-2025-119

aho_corasick/v1/04-Jul-2025-119

anstyle/v1/04-Jul-2025-119

anyhow/v1/04-Jul-2025-119

base64/v0_13/04-Jul-2025-119

bitflags/04-Jul-2025-2418

bstr/v1/04-Jul-2025-119

bytemuck/v1/04-Jul-2025-119

bytemuck_derive/v1/04-Jul-2025-119

byteorder/v1/04-Jul-2025-119

bytes/v1/04-Jul-2025-119

cfg_if/v1/04-Jul-2025-1411

chromium_crates_io/04-Jul-2025-1,923,9321,659,339

clap/v4/04-Jul-2025-119

clap_builder/v4/04-Jul-2025-119

clap_lex/v0_7/04-Jul-2025-119

crc32fast/v1/04-Jul-2025-119

cxx/04-Jul-2025-7248

cxxbridge_cmd/v1/04-Jul-2025-119

cxxbridge_flags/v1/04-Jul-2025-119

cxxbridge_macro/v1/04-Jul-2025-119

either/v1/04-Jul-2025-129

fdeflate/v0_3/04-Jul-2025-119

fend_core/v1/04-Jul-2025-508400

flate2/v1/04-Jul-2025-1411

font_types/v0_7/04-Jul-2025-119

getrandom/v0_2/04-Jul-2025-119

glob/v0_3/04-Jul-2025-129

heck/v0_4/04-Jul-2025-119

hex/v0_4/04-Jul-2025-119

hex_literal/v0_4/04-Jul-2025-119

itertools/v0_11/04-Jul-2025-119

itoa/v1/04-Jul-2025-119

lazy_static/v1/04-Jul-2025-119

libc/v0_2/04-Jul-2025-129

log/v0_4/04-Jul-2025-129

memchr/v2/04-Jul-2025-1310

miniz_oxide/v0_8/04-Jul-2025-119

nom/v7/04-Jul-2025-119

png/v0_17/04-Jul-2025-119

ppv_lite86/v0_2/04-Jul-2025-119

proc_macro2/v1/04-Jul-2025-119

prost/v0_13/04-Jul-2025-119

prost_derive/v0_13/04-Jul-2025-119

qr_code/v2/04-Jul-2025-119

quote/v1/04-Jul-2025-119

rand/v0_8/04-Jul-2025-129

rand_chacha/v0_3/04-Jul-2025-129

rand_core/v0_6/04-Jul-2025-129

rand_pcg/v0_3/04-Jul-2025-129

read_fonts/v0_23/04-Jul-2025-119

regex/v1/04-Jul-2025-1310

regex_automata/v0_4/04-Jul-2025-119

regex_syntax/v0_8/04-Jul-2025-119

relative_path/v1/04-Jul-2025-119

rustc_demangle/v0_1/04-Jul-2025-129

rustc_version/v0_4/04-Jul-2025-119

rustversion/v1/04-Jul-2025-119

ryu/v1/04-Jul-2025-119

semver/v1/04-Jul-2025-119

serde/v1/04-Jul-2025-119

serde_derive/v1/04-Jul-2025-119

serde_json/v1/04-Jul-2025-119

serde_json_lenient/v0_2/04-Jul-2025-993824

simd_adler32/v0_3/04-Jul-2025-119

skrifa/v0_24/04-Jul-2025-119

small_ctor/v0_1/04-Jul-2025-119

src/04-Jul-2025-10

static_assertions/v1/04-Jul-2025-119

strsim/v0_11/04-Jul-2025-1310

strum/v0_25/04-Jul-2025-108

strum_macros/v0_25/04-Jul-2025-119

syn/v2/04-Jul-2025-119

termcolor/v1/04-Jul-2025-129

tinyvec/v1/04-Jul-2025-119

unicode_ident/v1/04-Jul-2025-119

unicode_linebreak/v0_1/04-Jul-2025-108

unicode_width/v0_1/04-Jul-2025-1310

winapi_util/v0_1/04-Jul-2025-119

windows_aarch64_msvc/v0_52/04-Jul-2025-119

windows_i686_msvc/v0_52/04-Jul-2025-119

windows_sys/v0_52/04-Jul-2025-119

windows_targets/v0_52/04-Jul-2025-119

windows_x86_64_msvc/v0_52/04-Jul-2025-119

wycheproof/v0_4/04-Jul-2025-119

zerocopy/v0_7/04-Jul-2025-119

zerocopy_derive/v0_7/04-Jul-2025-119

.clang-formatD04-Jul-202520 21

PRESUBMIT.pyD04-Jul-20251 KiB3220

README.mdD04-Jul-20252.1 KiB5944

README.md

1# Rust third-party code
2
3This directory contains all third-party Rust code, and sometimes thin wrappers
4around it for C++ intertop.
5
6## Crates.io
7
8Crates that come from [crates.io](https://crates.io) are found in
9`//third_party/rust/chromium_crates_io`, and are all vendored into the
10Chromium git repository. They are managed through Cargo rules and with
11the `gnrt` tool. See [`//docs/rust.md`](../../docs/rust.md) for how to
12bring in new third-party libraries or update them.
13
14The GN rules and README.chromium files for these crates are written by
15the `gnrt` tool and should not be edited by hand.
16
17### Directory structure
18
19We store GN rules for each third-party crate in a directory of the same name.
20Under that directory a folder named based on the crate epoch version is
21created. This limits first-party usage of a crate to only one version within
22each epoch.
23If the crate's version has a major version greater-than 0, then that is used
24as its version folder, such as `v1`. Otherwise, the name includes all
25leading zeros in the version, such as `v0_3`.
26
27For example, GN rules for the `tutelage` crate at version **1.4.3** would be
28stored at
29```sh
30//third_party/rust/tutelage/v1
31```
32
33Whereas GN rules for the verion **0.2.8** version would be stored at
34```sh
35//third_party/rust/tutelage/v0_2
36```
37
38## Other sources
39
40Third-party Rust libraries that are not distributed through [crates.io](
41https://crates.io) are uncommon. But they may live under
42`//third_party/rust/crate_name` or `//third_party/project_name` directly,
43as a git submodule, with GN rules written for them by hand
44(such GN rules would most likely use either the `cargo_crate("foo")` or the
45`rust_static_library("foo")` template from Chromium's `//build/rust/*.gni`).
46
47## OWNERS
48
49We do not require OWNERS in each crate's directory at this time, but this
50will be revisited in the future.
51
52## Review process
53
54Rust libraries must go through the [3rd-party review process](
55../../docs/adding_to_third_party.md).
56See the [review of the `toml` crate](
57https://groups.google.com/u/1/a/chromium.org/g/security/c/K686pSg-gZc/m/Pn2QzqahAwAJ)
58for an example of a Rust security review.
59