Add devenv output

devenv.nix

@@ -5,6 +5,16 @@
   inputs,
   ...
 }:
+
+let
+  server = pkgs.buildGoModule {
+    pname = "metadata-agregator";
+    version = "0.1.0";
+    src = ./.;
+    vendorHash = "sha256-qNNFHRKqGoo/GveSl9+Bm+DkTKDoSQeGtG8p1edmCJk=";
+    subPackages = [ "cmd/server" ];
+  };
+in
 {
   languages.go.enable = true;
 
@@ -59,4 +69,20 @@
       GRANT ALL ON SCHEMA public TO agregator;
     '';
   };
+
+  processes.metadata-agregator = {
+    exec = ''
+      export DATABASE_URL="postgresql://agregator:agregator@localhost/metadata_agregator?host=${config.env.PGHOST}"
+      cat > "$DEVENV_RUNTIME/metadata-config.yaml" <<'YAML'
+      server:
+        port: 50053
+      YAML
+      ${config.outputs.server}/bin/server -config "$DEVENV_RUNTIME/metadata-config.yaml"
+    '';
+    after = [ "devenv:processes:postgres" ];
+  };
+
+  outputs = {
+    inherit server;
+  };
 }