fix: vergen (#296)

build.rs

@@ -1,6 +1,7 @@
 use cfg_aliases::cfg_aliases;
+use vergen_git2::{BuildBuilder, CargoBuilder, Emitter, Git2Builder, RustcBuilder, SysinfoBuilder};
 
-fn main() {
+fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Setup cfg aliases
     cfg_aliases! {
         // Platforms
@@ -13,4 +14,20 @@ fn main() {
         smb_unix: { all(unix, feature = "smb", not(macos)) },
         smb_windows: { all(windows, feature = "smb") }
     }
+
+    let build = BuildBuilder::all_build()?;
+    let cargo = CargoBuilder::all_cargo()?;
+    let git2 = Git2Builder::all_git()?;
+    let rustc = RustcBuilder::all_rustc()?;
+    let si = SysinfoBuilder::all_sysinfo()?;
+
+    Emitter::default()
+        .add_instructions(&build)?
+        .add_instructions(&cargo)?
+        .add_instructions(&git2)?
+        .add_instructions(&rustc)?
+        .add_instructions(&si)?
+        .emit()?;
+
+    Ok(())
 }