0.1.3: check if /var/run/reboot-required already exists because of a …

…prior run

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "nixos-reedsreboot"
-version = "0.1.2"
+version = "0.1.3"
 edition = "2021"
 description = "Determine if you need to reboot your NixOS machine"
 license = "GPL-2.0"

flake.nix

@@ -34,10 +34,10 @@
       packages = forEachSupportedSystem ({ pkgs, ... }: {
         default = pkgs.rustPlatform.buildRustPackage {
           pname = "nixos-needsreboot";
-          version = "0.1.2";
+          version = "0.1.3";
           src = ./.;
 
-          cargoHash = "sha256-z/LhXoi1JoMGgUX3Y1xOI9Ehz2rETApWUgsd5C6Y9Nk=";
+          cargoHash = "sha256-YLXyzm5DTMNR3fMPSWvuy/gnTY3sHBzuBPwUMPiBzJY=";
         };
       });
     };

src/main.rs

@@ -1,10 +1,12 @@
 use std::error::Error;
 use std::fs;
+use std::path::Path;
 
 mod compare_nixos_modules;
 
 pub static OLD_SYSTEM_PATH: &str = "/run/booted-system";
 pub static NEW_SYSTEM_PATH: &str = "/nix/var/nix/profiles/system";
+pub static NIXOS_NEEDS_REBOOT: &str = "/var/run/reboot-required";
 
 fn main() -> Result<(), Box<dyn Error>> {
     let user = std::env::var_os("USER")
@@ -16,14 +18,15 @@ fn main() -> Result<(), Box<dyn Error>> {
         std::process::exit(1);
     }
 
-    if std::path::Path::new("/nix/var/nix/profiles/system").exists() {
+    if Path::new("/nix/var/nix/profiles/system").exists() {
+        let needs_reboot = Path::new(NIXOS_NEEDS_REBOOT).exists();
         let old_system_id = fs::read_to_string(OLD_SYSTEM_PATH.to_string() + "/nixos-version")?;
         let new_system_id = fs::read_to_string(NEW_SYSTEM_PATH.to_string() + "/nixos-version")?;
 
         if old_system_id == new_system_id {
             eprintln!("DEBUG: you are using the latest NixOS generation, no need to reboot");
-        } else if compare_nixos_modules::upgrades_available()? {
-            fs::File::create("/var/run/reboot-required")?;
+        } else if needs_reboot || compare_nixos_modules::upgrades_available()? {
+            fs::File::create(NIXOS_NEEDS_REBOOT)?;
         } else {
             eprintln!("DEBUG: no updates available, moar uptime!!!");
         }