From e1e5f2c2beaf3ba0fd7e6be992119166934d775b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Hru=C5=A1ka?= <ondra@ondrovo.com>
Date: Mon, 20 Apr 2020 09:26:27 +0200
Subject: [PATCH] version slice

---
 src/lib.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index f3d9ac4..e09be2e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -41,8 +41,8 @@ pub trait AppConfig: Sized + Serialize + DeserializeOwned + Debug + Default {
     fn configure<'a>(self, _clap: &clap::ArgMatches<'a>) -> Fallible<Self::Init>;
 
     /// Initialize the app
-    fn init(name: &str, cfg_file_name: &str, version: Option<String>) -> Fallible<Self::Init> {
-        let version: String = version.unwrap_or_else(|| env!("CARGO_PKG_VERSION").into());
+    fn init(name: &str, cfg_file_name: &str, version: Option<&str>) -> Fallible<Self::Init> {
+        let version = version.unwrap_or_else(|| env!("CARGO_PKG_VERSION"));
         let clap = clap::App::new(name)
             .arg(
                 clap::Arg::with_name("config")
@@ -88,7 +88,7 @@ pub trait AppConfig: Sized + Serialize + DeserializeOwned + Debug + Default {
         let clap = Self::add_args(clap);
 
         // this must be done after `add_args` or all hell breaks loose around lifetimes
-        let clap = clap.version(version.as_str());
+        let clap = clap.version(version);
 
         let argv = clap.get_matches();