flake update

nix/package.nix

@@ -0,0 +1,37 @@
+{
+  stdenv,
+  rustPlatform,
+  lib,
+  pkg-config,
+  dbus,
+}: let
+  inherit (lib.sources) sourceByRegex;
+  inherit (builtins) fromTOML readFile;
+  src = sourceByRegex ../. ["Cargo.*" "(src)(/.*)?"];
+  cargoToml = (fromTOML (readFile ../Cargo.toml)).package;
+in
+  rustPlatform.buildRustPackage rec {
+    pname = cargoToml.name;
+
+    inherit src;
+    inherit (cargoToml) version;
+
+    buildInputs = [
+      dbus
+    ];
+
+    nativeBuildInputs = [
+      pkg-config
+    ];
+
+    preInstall = ''
+      mkdir -p $out/share/dbus-1/system.d
+      cp ${../dbus-bluetooth.xml} $out/share/dbus-1/system.d/dbus-bluetooth.conf
+    '';
+
+    cargoLock = {
+      lockFile = ../Cargo.lock;
+    };
+
+    meta.mainProgram = "mitemp-prometheus";
+  }