fn main() {
	let mut path = std::path::PathBuf::from(std::env::var_os("OUT_DIR").unwrap());
	while path.file_name() != Some(std::ffi::OsStr::new("target")) {
		path.pop();
	}
	path.pop();
	path.push("migrations.toml");

	println!("cargo:rerun-if-changed={}", path.to_str().unwrap());

	let mut path2 = std::path::PathBuf::from(std::env::var_os("OUT_DIR").unwrap());
	path2.push("migrations.toml");

	// docs.rs is a largely read-only filesystem
	if std::env::var("DOCS_RS").is_ok() {
		std::fs::write(&path2, "").unwrap();
		return;
	}

	if !path.exists() {
		std::fs::write(&path, "").unwrap();
	}

	std::fs::copy(path, path2).unwrap();
}