Crate features / clap_builder
Feature flags · clap_builder 4.6.7 · from crates.io 2026-10-24
clap_builder features: what each one does, and the line to copy
Short answerclap_builder 4.6.7 has 17 features. By default it turns on std, color, help, usage, error-context, suggestions; add default-features = false to start from nothing. It needs Rust 1.85 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
cargo | nothing else (a switch the code checks) | |
color | yes | dep:anstream |
debug | dep:backtrace | |
deprecated | nothing else (a switch the code checks) | |
env | nothing else (a switch the code checks) | |
error-context | yes | nothing else (a switch the code checks) |
help | yes | nothing else (a switch the code checks) |
std | yes | anstyle/std |
string | nothing else (a switch the code checks) | |
suggestions | yes | dep:strsim, error-context |
unicode | dep:unicode-width, dep:unicase | |
unstable-doc | cargo, wrap_help, env, unicode, string, unstable-ext | |
unstable-ext | nothing else (a switch the code checks) | |
unstable-styles | color | |
unstable-v5 | deprecated | |
usage | yes | nothing else (a switch the code checks) |
wrap_help | help, dep:terminal_size |
dep:x turns on the optional dependency x; x/y turns on feature y of dependency x (with ?, only if x is already on).
MSRV history
The minimum Rust version clap_builder declares (rust-version), and the release that changed it:
- 4.1.14 (2023-03-28): Rust 1.64.0
- 4.4.0 (2023-08-24): Rust 1.70.0
- 4.5.0 (2024-02-08): Rust 1.74
- 4.6.0 (2026-03-12): Rust 1.85
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p clap_builder --precise <version>, or use resolver 3, which picks compatible versions for you.
More on clap_builder
docs.rs feature list · crates.io · license MIT OR Apache-2.0 · edition 2024
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