show commit link in footer

site.nix

@@ -13,7 +13,7 @@ let
 
   xesite = naersk.buildPackage {
     inherit src;
-    buildInputs = [ pkg-config openssl ];
+    buildInputs = [ pkg-config openssl git ];
     remapPathPrefix = true;
   };
 

src/build.rs

@@ -1,5 +1,11 @@
 use ructe::{Result, Ructe};
+use std::process::Command;
 
 fn main() -> Result<()> {
-    Ructe::from_env()?.compile_templates("templates")
+    Ructe::from_env()?.compile_templates("templates")?;
+
+    let output = Command::new("git").args(&["rev-parse", "HEAD"]).output().unwrap();
+    let git_hash = String::from_utf8(output.stdout).unwrap();
+    println!("cargo:rustc-env=GITHUB_SHA={}", git_hash);
+    Ok(())
 }

templates/footer.rs.html

@@ -7,7 +7,7 @@
             <blockquote>Copyright 2020 Christine Dodrill. Any and all opinions listed here are my own and not representative of my employers; future, past and present.</blockquote>
             <!--<p>Like what you see? Donate on <a href="https://www.patreon.com/cadey">Patreon</a> like <a href="/patrons">these awesome people</a>!</p>-->
             <p>Looking for someone for your team? Take a look <a href="/signalboost">here</a>.</p>
-            <p>Served by @APP running commit @env!("GITHUB_SHA"), see <a href="https://github.com/Xe/site">source code here</a>.</p>
+            <p>Served by @APP running commit <a href="https://github.com/Xe/site/commit/@env!("GITHUB_SHA")">@env!("GITHUB_SHA")</a>, see <a href="https://github.com/Xe/site">source code here</a>.</p>
         </footer>
 
         </div>