build.rs

// Copyright (c) 2018 Nuclear Furnace
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
use std::process::Command;

fn main() {
    let output = Command::new("git").args(&["describe", "--always", "--dirty"]).output();
    let git_hash = match output {
        Ok(result) => {
            let buf = result.stdout.clone();
            match String::from_utf8(buf) {
                Ok(s) => s,
                Err(_) => "¯\\_(ツ)_/¯".to_owned(),
            }
        },
        Err(_) => "¯\\_(ツ)_/¯".to_owned(),
    };
    println!("cargo:rustc-env=GIT_HASH={}", git_hash);
}