diff --git a/example.py b/example.py
deleted file mode 100644
index 72ed9d3..0000000
--- a/example.py
+++ /dev/null
@@ -1,20 +0,0 @@
-from heifip.extractor import FIPExtractor
-from heifip.layers import PacketProcessorType
-from heifip.images.flow import FlowImage
-
-extractor = FIPExtractor()
-imgs = extractor.create_image_from_file(
-    "./tests/pcaps/dns-caa.pcap",
-    PacketProcessorType.NONE,
-    FlowImage,
-    0, # min_image_dim
-    0, # max_image_dim
-    1, # min_packets
-    0, # max_packets
-    True, # remove_duplicates,
-    8
-    # 30, # dim
-    # 0, # fill
-    # True # auto_dim
-)
-print(imgs)
diff --git a/shell.nix b/shell.nix
deleted file mode 100644
index bdd07f6..0000000
--- a/shell.nix
+++ /dev/null
@@ -1,59 +0,0 @@
-with import <nixpkgs> { };
-
-let
-  pythonPackages = python39Packages;
-  pypyPackages = pypy3Packages;
-in pkgs.mkShell rec {
-  venvDir = "./.venv";
-  requirements = "requirements.txt";
-
-  name = "heiFIP";
-
-  buildInputs = [
-    pythonPackages.setuptools
-    pythonPackages.virtualenv # run virtualenv .
-    pythonPackages.pip
-    pythonPackages.pyqt5 # avoid installing via pip
-    # This execute some shell code to initialize a venv in $venvDir before
-    # dropping into the shell
-    pythonPackages.venvShellHook
-
-    # Without setting the zlib in LD_LIBRARY_PATH we get the following error:
-    # Original error was: libz.so.1: cannot open shared object file: No such file or directory
-    zlib
-  ];
-  shellHook = ''
-    # fixes libstdc++ issues and libgl.so issues
-    LD_LIBRARY_PATH=${zlib}/lib/:${stdenv.cc.cc.lib}/lib/:/run/opengl-driver/lib/
-    
-    # fixes xcb issues :
-    QT_PLUGIN_PATH=${qt5.qtbase}/${qt5.qtbase.qtPluginPrefix}
-    SOURCE_DATE_EPOCH=$(date +%s)
-    QT_XCB_GL_INTEGRATION="none"
-    
-    if [ -d "${venvDir}" ]; then
-      echo "Skipping venv creation, '${venvDir}' already exists"
-    else
-      echo "Creating new venv environment in path: '${venvDir}'"
-      # Note that the module venv was only introduced in python 3, so for 2.7
-      # this needs to be replaced with a call to virtualenv
-      ${pythonPackages.python.interpreter} -m venv "${venvDir}"
-    fi
-
-    # Under some circumstances it might be necessary to add your virtual
-    # environment to PYTHONPATH, which you can do here too;
-    PYTHONPATH=$PWD/${venvDir}/${pythonPackages.python.sitePackages}/:${pypy}:$PYTHONPATH
-    
-    source "${venvDir}/bin/activate"
-
-    echo "Upgrading pip to latest version"
-    python -m pip install --upgrade pip
-    
-    if [ -f "./${requirements}" ]; then
-      echo "Install '${requirements}'"
-      pip install -r ${requirements}
-    fi
-
-    pip install .
-  '';
-}
\ No newline at end of file