From 4a0b67ab5009d2b23cb414e26da2b374289d8141 Mon Sep 17 00:00:00 2001
From: Richard Newman <rnewman@twinql.com>
Date: Tue, 6 Mar 2018 08:09:59 -0800
Subject: [PATCH] Require Rust 0.1.24 or higher.

---
 Cargo.toml       |  2 +-
 build/version.rs | 13 +++++++++----
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 9a6a770b..6001e3b3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ bundled_sqlite3 = ["rusqlite/bundled"]
 members = ["tools/cli"]
 
 [build-dependencies]
-rustc_version = "0.1.7"
+rustc_version = "0.2"
 
 [dependencies]
 chrono = "0.4"
diff --git a/build/version.rs b/build/version.rs
index 6ad73157..66b38976 100644
--- a/build/version.rs
+++ b/build/version.rs
@@ -12,15 +12,20 @@ extern crate rustc_version;
 
 use std::io::{self, Write};
 use std::process::exit;
-use rustc_version::version_matches;
+use rustc_version::{
+    Version,
+    version,
+};
 
 /// MIN_VERSION should be changed when there's a new minimum version of rustc required
 /// to build the project.
-static MIN_VERSION: &'static str  = ">= 1.17.0";
+static MIN_VERSION: &'static str  = "1.24.0";
 
 fn main() {
-    if !version_matches(MIN_VERSION) {
-        writeln!(&mut io::stderr(), "Mentat requires rustc {}", MIN_VERSION).unwrap();
+    let ver = version().unwrap();
+    let min = Version::parse(MIN_VERSION).unwrap();
+    if ver < min {
+        writeln!(&mut io::stderr(), "Mentat requires rustc {} or higher.", MIN_VERSION).unwrap();
         exit(1);
     }
 }