build: Added nix build for the library.

.gitignore

@@ -1,4 +1,5 @@
 .direnv
-node_modules
+result
-vendor
+zomq.a
+zomq.so
 zmq_odin

flake.nix

@@ -27,7 +27,45 @@
       systems = [ "x86_64-linux" ];
 
       perSystem =
-        { pkgs, system, inputs', ... }: {
+        { pkgs, system, inputs', ... }:
+        let
+          zomq = pkgs.stdenv.mkDerivation {
+            pname = "zomq";
+            version = "0.1.0";
+            src = ./.;
+
+            nativeBuildInputs = [ pkgs.odin ];
+            buildInputs = [ pkgs.zeromq ];
+
+            dontConfigure = true;
+            doCheck = true;
+
+            buildPhase = ''
+              runHook preBuild
+              odin build . -build-mode:lib -o:speed -out:libzomq
+              runHook postBuild
+            '';
+
+            checkPhase = ''
+              runHook preCheck
+              odin test . -all-packages
+              runHook postCheck
+            '';
+
+            installPhase = ''
+              runHook preInstall
+              install -Dm644 libzomq.a $out/lib/libzomq.a
+              runHook postInstall
+            '';
+
+            meta = {
+              description = "libzmq bindings for odin";
+              platforms = [ "x86_64-linux" ];
+            };
+          };
+        in {
+          packages.default = zomq;
+
           _module.args.pkgs = import nixpkgs {
             inherit system;
             config.allowUnfree = true;