Add default.nix

default.nix

@@ -0,0 +1,54 @@
+{ pkgs ? import <nixpkgs> {}, lib ? pkgs.lib }:
+
+let
+  rustPlatform = pkgs.rustPlatform;
+
+  agnos = rustPlatform.buildRustPackage {
+    pname = "agnos";
+    version = "0.1.0";
+
+    src = lib.fileset.toSource { root = ./.; fileset = lib.fileset.unions [
+          ./Cargo.lock
+          ./Cargo.toml
+          ./LICENSE.txt
+          ./README.md
+          ./resources/Banner-optimized.png
+          ./resources/red-iron.png
+          ./src
+          ./systemd
+    ]; };
+
+    cargoLock = {
+      lockFile = ./Cargo.lock;
+    };
+
+    nativeBuildInputs = [
+      pkgs.pkg-config
+    ];
+
+    buildInputs = [
+      pkgs.openssl
+    ];
+
+    buildPhase = ''
+      cargo build --release
+    '';
+
+    installPhase = ''
+      mkdir -p $out/bin
+      cp target/release/agnos $out/bin/
+      
+      # Install systemd unit and timer
+      mkdir -p $out/lib/systemd/system
+      cp ${./systemd/agnos.service} $out/lib/systemd/system/
+      cp ${./systemd/agnos.timer} $out/lib/systemd/system/
+    '';
+
+    meta = with lib; {
+      description = "A Rust project with systemd unit and timer files";
+      license = licenses.mit;
+      maintainers = [ maintainers.krtab ];
+    };
+  };
+in
+agnos