swaitsandClaude Opus 4.6
3102fc747a
Implement full SSD1306 OLED display support: - Splash screen on boot (1.5s) with project name, version, board - Dashboard showing radio state, config, counters, RSSI/SNR - RSSI history sparkline (64-sample ring buffer, 2px-wide bars) - DisplayOn/DisplayOff host commands routed via dedicated channel - Pure render functions against generic DrawTarget (no hardware coupling) - Display on/off control bypasses radio task entirely Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
version_check
This tiny crate checks that the running or installed rustc meets some version
requirements. The version is queried by calling the Rust compiler with
--version. The path to the compiler is determined first via the RUSTC
environment variable. If it is not set, then rustc is used. If that fails, no
determination is made, and calls return None.
Usage
Add to your Cargo.toml file, typically as a build dependency:
[build-dependencies]
version_check = "0.9"
version_check is compatible and compiles with Rust 1.0.0 and beyond.
Examples
Set a cfg flag in build.rs if the running compiler was determined to be
at least version 1.13.0:
extern crate version_check as rustc;
if rustc::is_min_version("1.13.0").unwrap_or(false) {
println!("cargo:rustc-cfg=question_mark_operator");
}
Check that the running compiler was released on or after 2018-12-18:
extern crate version_check as rustc;
match rustc::is_min_date("2018-12-18") {
Some(true) => "Yep! It's recent!",
Some(false) => "No, it's older.",
None => "Couldn't determine the rustc version."
};
Check that the running compiler supports feature flags:
extern crate version_check as rustc;
match rustc::is_feature_flaggable() {
Some(true) => "Yes! It's a dev or nightly release!",
Some(false) => "No, it's stable or beta.",
None => "Couldn't determine the rustc version."
};
See the rustdocs for more examples and complete documentation.
Alternatives
This crate is dead simple with no dependencies. If you need something more and
don't care about panicking if the version cannot be obtained, or if you don't
mind adding dependencies, see rustc_version. If you'd instead prefer a feature
detection library that works by dynamically invoking rustc with a
representative code sample, see autocfg.
License
version_check is licensed under either of the following, at your option:
- Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT License (LICENSE-MIT or http://opensource.org/licenses/MIT)