chore: Add built

Author: Techassi

Cargo.lock

@@ -22,6 +22,7 @@ axum = { version = "0.7", features = ["http2"] }
 axum-extra = { version = "0.9", features = ["typed-header"] }
 bcrypt = "0.15"
 bindgen = "0.70.1"
+built = "0.8.0"
 cc = "1.0.106"
 clap = { version = "4.5", features = ["derive", "env"] }
 clap_complete = "4.5"

Cargo.nix

@@ -38,3 +38,6 @@ indicatif.workspace = true
 termion.workspace = true
 urlencoding.workspace = true
 libc.workspace = true
+
+[build-dependencies]
+built.workspace = true

Cargo.toml

@@ -0,0 +1,3 @@
+fn main() {
+    built::write_built_file().expect("failed to acquire build-time information");
+}

rust/stackablectl/Cargo.toml

@@ -4,3 +4,13 @@ pub mod cmds;
 pub mod constants;
 pub mod output;
 pub mod utils;
+
+pub mod built_info {
+    use std::{str::FromStr, sync::LazyLock};
+
+    include!(concat!(env!("OUT_DIR"), "/built.rs"));
+
+    pub static PKG_SEMVER: LazyLock<semver::Version> = LazyLock::new(|| {
+        semver::Version::from_str(PKG_VERSION).expect("must be a valid semantic version")
+    });
+}