diff --git a/nelson.nix b/nelson.nix
index da90b56e3a..a367e1e16b 100644
--- a/nelson.nix
+++ b/nelson.nix
@@ -1,19 +1,27 @@
 {
-  pkgs ? import <nixpkgs> { },
+  pkgs,
+  zlib, # Compression library
+  boost, # Boost libraries
+  openssl, # SSL support
+  mpi, # MPI support
+  hdf5, # HDF5 support
+  curl, # cURL support
+  libgit2, # Git support
+  libsndfile, # Sound file support
+  eigen, # Eigen library
+  portaudio, # PortAudio support
+  lapack, # LAPACK support
+  openblas, # OpenBLAS support
+  libjack2, # JACK support
+  taglib, # TagLib support
+  alsa-oss, # ALSA support
+  alsa-lib, # ALSA support
+  matio, # MATIO support
+  libcxx, # C++ standard library
+  qt5, # Qt for GUI support
 }:
 
 pkgs.stdenv.mkDerivation {
-  name = "nelson";
-  version = "master";
-
-  # Source URL for the Nelson source code
-  src = pkgs.fetchFromGitHub {
-    owner = "nelson-lang";
-    repo = "nelson";
-    rev = "master";
-    sha256 = "sha256-V6DERgNNv2dUal6lkbu/OtFpJoFKdMRW6HLOQJBZbWk="; # Replace with the actual checksum
-  };
-
   buildInputs = [
     pkgs.zlib # Compression library
     pkgs.boost # Boost libraries
@@ -23,6 +31,7 @@ pkgs.stdenv.mkDerivation {
     pkgs.curl # cURL support
     pkgs.libgit2 # Git support
     pkgs.libsndfile # Sound file support
+    pkgs.eigen # Eigen library
     pkgs.portaudio # PortAudio support
     pkgs.lapack # LAPACK support
     pkgs.openblas # OpenBLAS support
@@ -33,21 +42,28 @@ pkgs.stdenv.mkDerivation {
     pkgs.matio # MATIO support
     pkgs.libcxx # C++ standard library
     pkgs.qt5.full # Qt for GUI support
-    pkgs.qt5.wrapQtAppsHook # Wrapper for Qt applications
   ];
 
   nativeBuildInputs = [
     pkgs.cmake # Build system
-    pkgs.gnumake # Make utility
-    pkgs.gfortran # Fortran compiler (if needed for certain modules)
-    pkgs.eigen # Eigen library
+    pkgs.gfortran # Fortran compiler
     pkgs.pkg-config # pkg-config for detecting dependencies
+    pkgs.qt5.wrapQtAppsHook # Wrapper for Qt applications
   ];
 
+  name = "nelson";
+  version = "master";
+
+  # Source URL for the Nelson source code
+  src = pkgs.fetchFromGitHub {
+    owner = "nelson-lang";
+    repo = "nelson";
+    rev = "master";
+    sha256 = "sha256-b7L/ahq39eYDvFLW2BS9kYjS2eR2c+yPsMp0mBBJqLU="; # Replace with the actual checksum
+  };
+
   cmakeFlags = [
     "-DLGPL_ONLY=ON"
-    "-DCMAKE_BUILD_TYPE=Release"
-    "-DCMAKE_INSTALL_PREFIX=$out"
   ];
 
   # Wrap the application with Qt environment variables
@@ -57,11 +73,15 @@ pkgs.stdenv.mkDerivation {
 
   doCheck = false;
 
+  # Enable parallel building
+  enableParallelBuilding = true;
+
   meta = {
     description = "Nelson programming language";
     homepage = "https://github.com/nelson-lang/nelson";
     license = pkgs.lib.licenses.lgpl3Plus;
     maintainers = with pkgs.lib.maintainers; [ ];
+    mainProgram = "nelson";
   };
 
 }