cli: Use the build.rs at root

Signed-off-by: xphoniex <dj.2dixx@gmail.com>

radicle-cli/Cargo.toml

@@ -4,6 +4,7 @@ license = "MIT OR Apache-2.0"
 version = "0.8.0"
 authors = ["Alexis Sellier <alexis@radicle.xyz>"]
 edition = "2021"
+build = "../build.rs"
 
 [[bin]]
 name = "rad"

radicle-cli/build.rs

@@ -1,23 +0,0 @@
-use std::process::Command;
-
-fn main() {
-    // Set a build-time `GIT_HEAD` env var which includes the commit id;
-    // such that we can tell which code is running.
-    let hash = Command::new("git")
-        .arg("rev-parse")
-        .arg("--short")
-        .arg("HEAD")
-        .output()
-        .ok()
-        .and_then(|output| {
-            if output.status.success() {
-                String::from_utf8(output.stdout).ok()
-            } else {
-                None
-            }
-        })
-        .unwrap_or_else(|| String::from("unknown"));
-
-    println!("cargo:rustc-env=GIT_HEAD={}", hash);
-    println!("cargo:rustc-rerun-if-changed=.git/HEAD");
-}