pkgs: add unbted

pkgs/unbted.nix

@@ -0,0 +1,33 @@
+{ stdenv
+, fetchurl
+, makeWrapper
+, lib
+, jre
+}:
+stdenv.mkDerivation rec {
+  pname = "unbted";
+  version = "1.1";
+
+  src = fetchurl {
+    url = "https://github.com/unascribed/unbted/releases/download/v${version}/unbted-${version}.jar";
+    sha256 = "sha256-Sn6dQV4oCcpYdpa6Cvmese5FqgJ0z9WdVx5GNIMULno=";
+  };
+  dontUnpack = true;
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  installPhase = ''
+    mkdir -pv $out/share/java $out/bin
+    cp ${src} $out/share/java/${pname}-${version}.jar
+    makeWrapper ${jre}/bin/java $out/bin/${pname} \
+      --add-flags "-jar $out/share/java/${pname}-${version}.jar"
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/unascribed/unbted";
+    description = "Una's NBT Editor - an advanced interactive command-line NBT editor";
+    license = licenses.gpl3;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ infinidoge ];
+  };
+}