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
@@ -32,32 +33,29 @@
     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; [
+              jdk
+              maven
+            ];
+          };
+        });
       };
-      devShells = forEachSupportedSystem ({ pkgs }: {
-        default = pkgs.mkShell {
-          packages = with pkgs; [
-            jdk
-            maven
-          ];
-        };
-      });
     };
 }