Only in nitrocli-0.2.0: cc
diff -ura nitrocli-0.2.0/nitrokey-sys/build.rs nitrocli-0.2.0.new/nitrokey-sys/build.rs
--- nitrocli-0.2.0/nitrokey-sys/build.rs	2019-01-02 01:21:10.000000000 +0000
+++ nitrocli-0.2.0.new/nitrokey-sys/build.rs	2019-01-04 16:21:39.881258886 +0000
@@ -1,104 +1,3 @@
-extern crate cc;
-
-use std::env;
-use std::io;
-use std::io::{Read, Write};
-use std::fs;
-use std::path;
-
-struct Version {
-    major: String,
-    minor: String,
-    git: String,
-}
-
-fn stringify(err: env::VarError) -> String {
-    format!("{}", err)
-}
-
-fn extract_git_version(pre: &str) -> Result<String, String> {
-    // If a pre-release version is set, it is expected to have the format
-    // pre.v<maj>.<min>.<n>.g<hash>, where <maj> and <min> are the last major and minor version,
-    // <n> is the number of commits since this version and <hash> is the hash of the last commit.
-    let parts: Vec<&str> = pre.split('.').collect();
-    if parts.len() != 5 {
-        return Err(format!("'{}' is not a valid pre-release version", pre));
-    }
-    Ok(format!("{}.{}-{}-{}", parts[1], parts[2], parts[3], parts[4]))
-}
-
-fn get_version() -> Result<Version, String> {
-    let major = env::var("CARGO_PKG_VERSION_MAJOR").map_err(stringify)?;
-    let minor = env::var("CARGO_PKG_VERSION_MINOR").map_err(stringify)?;
-    let patch = env::var("CARGO_PKG_VERSION_PATCH").map_err(stringify)?;
-    let pre = env::var("CARGO_PKG_VERSION_PRE").map_err(stringify)?;
-
-    let git = match pre.is_empty() {
-        true => match patch.is_empty() {
-            true => format!("v{}.{}", major, minor),
-            false => format!("v{}.{}.{}", major, minor, patch),
-        },
-        false => extract_git_version(&pre)?,
-    };
-
-    Ok(Version {
-        major,
-        minor,
-        git,
-    })
-}
-
-fn prepare_version_source(
-    version: &Version,
-    out_path: &path::Path,
-    library_path: &path::Path
-) -> io::Result<path::PathBuf> {
-    let out = out_path.join("version.cc");
-    let template = library_path.join("version.cc.in");
-
-    let mut file = fs::File::open(template)?;
-    let mut data = String::new();
-    file.read_to_string(&mut data)?;
-    drop(file);
-
-    let data = data
-        .replace("@PROJECT_VERSION_MAJOR@", &version.major)
-        .replace("@PROJECT_VERSION_MINOR@", &version.minor)
-        .replace("@PROJECT_VERSION_GIT@", &version.git);
-
-    let mut file = fs::File::create(&out)?;
-    file.write_all(data.as_bytes())?;
-
-    Ok(out)
-}
-
 fn main() {
-    let out_dir = env::var("OUT_DIR").expect("Environment variable OUT_DIR is not set");
-    let out_path = path::PathBuf::from(out_dir);
-
-    let version = get_version().expect("Could not extract library version");
-
-    let sources = [
-        "DeviceCommunicationExceptions.cpp",
-        "NK_C_API.cc",
-        "NitrokeyManager.cc",
-        "command_id.cc",
-        "device.cc",
-        "log.cc",
-        "misc.cc",
-    ];
-    let library_dir = format!("libnitrokey-{}", version.git);
-    let library_path = path::Path::new(&library_dir);
-
-    let version_source = prepare_version_source(&version, &out_path, &library_path)
-        .expect("Could not prepare the version source file");
-
-    cc::Build::new()
-        .cpp(true)
-        .include(library_path.join("libnitrokey"))
-        .files(sources.iter().map(|s| library_path.join(s)))
-        .file(version_source)
-        .compile("libnitrokey.a");
-
-    println!("cargo:rustc-link-lib=hidapi-libusb");
+    println!("cargo:rustc-link-lib=nitrokey");
 }
diff -ura nitrocli-0.2.0/nitrokey-sys/Cargo.toml nitrocli-0.2.0.new/nitrokey-sys/Cargo.toml
--- nitrocli-0.2.0/nitrokey-sys/Cargo.toml	2019-01-02 01:21:10.000000000 +0000
+++ nitrocli-0.2.0.new/nitrokey-sys/Cargo.toml	2019-01-04 16:21:53.252875210 +0000
@@ -10,6 +10,3 @@
 links = "nitrokey"
 build = "build.rs"
 readme = "README.md"
-
-[build-dependencies]
-cc = "1.0"