switched to mkderivation

Reviewed-on: #3
Reviewed-by: hirst <hirsting@gmail.com>
Reviewed-by: Seiwy <bmate20050911@gmail.com>

flake.nix

@@ -10,6 +10,7 @@
     , nixpkgs
     , maven
     , makeWrapper
+    , stdenv
     , ...
     }:
     let
@@ -32,25 +33,21 @@
     in
     {
       packages = {
+        learningpulse-discovery = stdenv.mkDerivation rec {
+          pname = "gateway";
+          version = "1.0";
 
-        learningpulse-discovery = with lib; maven.buildMavenPackage {
-          pname = "learningpulse-discovery";
-          version = "1.1.1";
+          src = ./.;
+          buildInputs = [ maven ];
 
-          src = ./eurika;
-          # todo get hash from package
-          mvnHash = lib.fakeSha256;
-          nativeBuildInputs = [ makeWrapper ];
+          buildPhase = ''
+            mvn --offline -Dmaven.repo.local=gateway package;
+          '';
 
           installPhase = ''
-            mkdir -p $out/bin $out/share/jd-cli
-            install -Dm644 jd-cli/target/jd-cli.jar $out/share/jd-cli
-
-            makeWrapper ${nixpkgs.pkgs.jre8}/bin/java $out/bin/jd-cli \
-              --add-flags "-jar $out/share/jd-cli/jd-cli.jar"
+            install -Dm644 target/${pname}-${version}.jar $out/share/java
           '';
         };
-      };
         devShells = forEachSupportedSystem ({ pkgs }: {
           default = pkgs.mkShell {
             packages = with pkgs; [
@@ -60,4 +57,5 @@
           };
         });
       };
+    };
 }