git-semver 0.1.1

Parse and calculate semantic version information from a Git repository.
Documentation 
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use std::env;

fn main() {
    let git_commit = env::var("GIT_COMMIT").unwrap_or("".into());
    let git_sha = env::var("GIT_SHA").unwrap_or("".into());
    let git_branch = env::var("GIT_BRANCH").unwrap_or("".into());
    let version = env::var("BINARY_VERSION").unwrap_or(env!("CARGO_PKG_VERSION").into());
    println!("cargo:rustc-env=GIT_COMMIT={git_commit}");
    println!("cargo:rustc-env=GIT_SHA={git_sha}");
    println!("cargo:rustc-env=GIT_BRANCH={git_branch}");
    println!("cargo:rustc-env=VERSION={version}");
}