diff --git a/dev/app/CMakeLists.txt b/dev/app/CMakeLists.txt
index eca8f85..bded2ee 100644
--- a/dev/app/CMakeLists.txt
+++ b/dev/app/CMakeLists.txt
@@ -2,9 +2,4 @@ project(lightning-app)
 
 add_executable(app src/main.cpp)
 target_link_libraries(app 
-    PRIVATE 
-        data_processing 
-        constants
-        yaml-cpp
-        ${Boost_LIBRARIES}
 )
diff --git a/dev/app/src/main.cpp b/dev/app/src/main.cpp
index 6c25028..83ef69d 100644
--- a/dev/app/src/main.cpp
+++ b/dev/app/src/main.cpp
@@ -1,60 +1,3 @@
-#include <constants/constants.h>
-#include <data_processing/config.h>
-#include <yaml-cpp/yaml.h>
-
-#include <boost/program_options.hpp>
-#include <iostream>
-#include <string>
-#include <tuple>
-#include <vector>
-
-namespace po = boost::program_options;
-namespace dpc = flash::data_processing::config;
-namespace tp = flash::types;
-
-po::variables_map loadCommandLineArguments(int argc, char* argv[]) {
-    
-    po::options_description desc("Allowed options");
-    desc.add_options()("help,h", "produce help message")(
-        "config-file,i", po::value<std::string>()->default_value("config.yaml"), "set path to a config.yaml");
-
-    po::variables_map vm;
-    po::store(po::parse_command_line(argc, argv, desc), vm);
-
-    if (vm.count("help")) {
-        std::cout << desc << std::endl;
-        std::exception();
-    }
-
-    return vm;
-}
-
-dpc::Config setupConfigParameters(po::variables_map commandLineArguments) {
-
-    auto configFile = commandLineArguments["config-file"].as<std::string>();
-    std::cout << "Load configuration from " << configFile << std::endl;
-    try {
-        auto configNode = YAML::LoadFile(configFile);
-        auto params = dpc::Config(configNode);
-        params.validate();
-        return params;
-
-    } catch (YAML::BadFile BF) {
-        std::cerr << "Flash is terminating: "
-                  << "Could not open " << configFile << std::endl;
-    } catch (dpc::InvalidKeyException IKE) {
-        std::cerr << "Flash is terminating: " << IKE.what() << std::endl;
-    } catch (dpc::MissingKeyException MKE) {
-        std::cerr << "Flash is terminating: " << MKE.what() << std::endl;
-    } catch (dpc::InvalidConfigurationException ICE) {
-        std::cerr << "Flash is terminating: " << ICE.what() << std::endl;
-    }
-}
-
 int main(int argc, char* argv[]) {
-    auto commandLineArguments = loadCommandLineArguments(argc, argv);
-    auto configParameters = setupConfigParameters(commandLineArguments);
-
-
     return 0;
 }
diff --git a/dev/libs/CMakeLists.txt b/dev/libs/CMakeLists.txt
deleted file mode 100644
index f0fcacf..0000000
--- a/dev/libs/CMakeLists.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-
-
-
-
-add_subdirectory(types)
-add_subdirectory(constants)
-add_subdirectory(data_processing)
-add_subdirectory(electrons)
\ No newline at end of file
diff --git a/dev/libs/constants/CMakeLists.txt b/dev/libs/constants/CMakeLists.txt
deleted file mode 100644
index f8d48cf..0000000
--- a/dev/libs/constants/CMakeLists.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-#project(lighning-constants)
-
-add_library(constants INTERFACE)
-
-target_include_directories(constants 
-    INTERFACE
-        include
-)
\ No newline at end of file
diff --git a/dev/libs/constants/include/constants/constants.h b/dev/libs/constants/include/constants/constants.h
deleted file mode 100644
index 35d9068..0000000
--- a/dev/libs/constants/include/constants/constants.h
+++ /dev/null
@@ -1,10 +0,0 @@
-//
-// Created by benedikt on 26.05.24.
-//
-
-#ifndef CONSTANTS_H
-#define CONSTANTS_H
-
-#include "precision.h"
-
-#endif  // CONSTANTS_H
\ No newline at end of file
diff --git a/dev/libs/constants/include/constants/precision.h b/dev/libs/constants/include/constants/precision.h
deleted file mode 100644
index 5f3698b..0000000
--- a/dev/libs/constants/include/constants/precision.h
+++ /dev/null
@@ -1,14 +0,0 @@
-//
-// Created by benedikt on 26.05.24.
-//
-
-#ifndef PRECISION_H
-#define PRECISION_H
-
-#include <cstdint>
-
-namespace precison {
-inline constexpr int testConst = 3;
-}
-
-#endif  // PRECISION_H
\ No newline at end of file
diff --git a/dev/libs/data_processing/CMakeLists.txt b/dev/libs/data_processing/CMakeLists.txt
deleted file mode 100644
index 9793b59..0000000
--- a/dev/libs/data_processing/CMakeLists.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-#project(lightning-config)
-
-add_library(data_processing 
-        src/config.cpp 
-        src/read_hdf5.cpp
-)
-
-target_link_libraries(data_processing 
-        types  
-        yaml-cpp
-)
-
-target_include_directories(data_processing
-        PUBLIC
-            include
-        PRIVATE
-            src
-)
\ No newline at end of file
diff --git a/dev/libs/data_processing/include/data_processing/config.h b/dev/libs/data_processing/include/data_processing/config.h
deleted file mode 100644
index 43c03e4..0000000
--- a/dev/libs/data_processing/include/data_processing/config.h
+++ /dev/null
@@ -1,201 +0,0 @@
-#ifndef FLASH_CONFIG_H
-#define FLASH_CONFIG_H
-
-#include <array>
-#include <cmath>
-#include <iostream>
-#include <string>
-#include <tuple>
-#include <vector>
-
-#include <yaml-cpp/yaml.h>
-
-#include <types/types.h>
-
-namespace flash {
-namespace data_processing {
-namespace config {
-
-/**
- * @brief Throw when an invalid key is detected.
- */
-class InvalidKeyException : public std::exception {
-   private:
-    std::string message;
-
-   public:
-    InvalidKeyException(std::string msg) : message(msg) {}
-    std::string what() { return message; }
-};
-
-/**
- * @brief Throw when a missing key is detected.
- */
-class MissingKeyException : public std::exception {
-   private:
-    std::string message;
-
-   public:
-    MissingKeyException(std::string msg) : message(msg) {}
-    std::string what() { return message; }
-};
-
-/**
- * @brief Throw when an invalid configuration is detected.
- */
-class InvalidConfigurationException : public std::exception {
-   private:
-    std::string message;
-
-   public:
-    InvalidConfigurationException(std::string msg) : message(msg) {}
-    std::string what() { return message; }
-};
-
-/// @brief Options for random seed.
-enum class Seed { fixed, clock, invalid };
-
-/// @brief Allowed Keys in config.yaml
-static const std::vector<std::string> getAllowedKeys() {
-    static const std::vector<std::string> allowedKeys = {"n_k_points",
-                                                         "n_occupied_total",
-                                                         "n_unoccupied_total",
-                                                         "n_isdf_vexc",
-                                                         "n_isdf_wscr_occupied",
-                                                         "n_isdf_wscr_unoccupied",
-                                                         "max_lanczos_iterations",
-                                                         "omega_range",
-                                                         "n_omega",
-                                                         "max_cvt_iterations",
-                                                         "cvt_convergence_criterium",
-                                                         "seed_source"};
-    return allowedKeys;
-}
-
-/// @brief Mandatory keys in config.yaml. These do not have a default value.
-static const std::vector<std::string> getMandatoryKeys() {
-    static const std::vector<std::string> allowedKeys = {"n_k_points",
-                                                         "n_occupied_total",
-                                                         "n_unoccupied_total",
-                                                         "n_isdf_vexc",
-                                                         "n_isdf_wscr_occupied",
-                                                         "n_isdf_wscr_unoccupied",
-                                                         "max_lanczos_iterations",
-                                                         "omega_range",
-                                                         "n_omega"};
-    return allowedKeys;
-}
-
-/// @brief Default configuration values for non mandatory keys.
-struct DefaultConfig {
-    types::size max_cvt_Itereations = 1000;
-    types::real_dp cvt_convergence_criterium = 1.e-5;
-    Seed seed_source = Seed::clock;
-
-    DefaultConfig() = default;
-};
-
-/// @brief Class for handling the configuration of the program
-class Config {
-   public:
-    /**
-     * @brief Number of **k**-points.
-     */
-    types::size n_k_points;
-
-    /**
-     * @brief Number of occupied bands cumulative over the **k**-points.
-     * @details \p n_occupied_total + \p n_occupied_total must be divisable by \p n_k_points
-     */
-    types::size n_occupied_total;
-
-    /**
-     * @brief Number of unoccupied bands cumulative over the **k**-points.
-     */
-    types::size n_unoccupied_total;
-
-    /**
-     * @brief Number of interpolation points for occupied unoccupied pairing.
-     * @details Must be <= \p n_occupied_total * \p n_unoccupied_total / \p n_k_points.
-     */
-    types::size n_isdf_vexc;
-
-    /**
-     * @brief Number of interpolation points for occupied unoccupied pairing.
-     * @details Must be <= \p n_occupied_total ** 2.
-     */
-    types::size n_isdf_wscr_occupied;
-
-    /**
-     * @brief Number of interpolation points for occupied unoccupied pairing.
-     * @details Must be <= \p n_unoccupied_total ** 2.
-     */
-    types::size n_isdf_wscr_unoccupied;
-
-    /**
-     * @brief Number of Lanczos iterations.
-     * @details Must be <= \p n_occupied_total * \p n_unoccupied_total / \p n_k_points.
-     */
-    types::size max_lanczos_iterations;
-
-    /**
-     * @brief Energy range for calculating the spectrum.
-     * @details The lower limit (left value) must be smaller than the upper limit (right value).
-     */
-    std::array<types::real_dp, 2> omega_range;
-
-    /**
-     * @brief Number of energy sampling points.
-     */
-    types::size n_omega;
-
-    /**
-     * @brief Max. iterations for CVT.
-     */
-    types::size max_cvt_iterations;
-
-    /**
-     * @brief CVT convergence criterium
-     */
-    types::real_dp cvt_convergence_criterium;
-
-    /**
-     * @brief Seed source for random number generation.
-     * @details Must be one of
-     *     - `"fixed"` for using a fixed seed
-     *     - `"clock"` for using the system clock as seed.
-     */
-    Seed seed_source;
-
-    /**
-     * @brief Initialize the configuration from a yaml node \p configYaml.
-     *
-     * @details Initialize the configuration from a yaml node \p configYaml and
-     * check that the node only contains allowed keys \p allowedKeys and defines all
-     * mandatory keys \p mandatoryKeys .
-     * value is initialized from \p DefaultConfig.
-     *
-     * @param[in] configYaml Yaml node that contains the configuration.
-     * @param[in] allowedKeys List of allowed keys.
-     * @return instance initialized with values from config.yaml
-     * @throws InvalidKeyException
-     * @throws MissingKeyException
-     * @throws InvalidConfigurationException
-     */
-    Config(const YAML::Node &configYamlNode, const std::vector<std::string> &allowedKeys = getAllowedKeys(),
-           const std::vector<std::string> &mandatoryKeys = getMandatoryKeys(),
-           const DefaultConfig &defaults = DefaultConfig());
-
-    /**
-     * @brief Validate configurataions.
-     * @details A valid configuration follows the rules described in the documentation of each attribute.
-     * @throws InvalidConfigurationException
-     */
-    void validate();
-};
-
-}  // namespace config
-}  // namespace data_processing
-}  // namespace flash
-
-#endif  // FLASH_CONFIG_H`
diff --git a/dev/libs/data_processing/include/data_processing/read_hdf5.h b/dev/libs/data_processing/include/data_processing/read_hdf5.h
deleted file mode 100644
index 9c26abf..0000000
--- a/dev/libs/data_processing/include/data_processing/read_hdf5.h
+++ /dev/null
@@ -1,29 +0,0 @@
-
-#ifndef FLASH_READ_H
-#define FLASH_READ_H
-
-#include <string>
-#include <vector>
-
-#include <H5Cpp.h>
-
-#include <types/types.h>
-
-namespace flash {
-namespace data_processing {
-namespace read_hdf5 {
-
-/**
- * @brief Read a \p flash::types::real_dp vector from an HDF5 file
- *
- * @param[in] filename Name of the HDF5 file
- * @param[in] datasetName Absolute name of the dataset
- * @return A \p flash::types::DVector initialized with the data from the file
- */
-flash::types::DVector readDoubleVectorHDF5(const std::string &filename, const std::string &datasetName);
-
-}  // namespace read_hdf5
-}  // namespace data_processing
-}  // namespace flash
-
-#endif  // FLASH_READ_H
\ No newline at end of file
diff --git a/dev/libs/data_processing/src/config.cpp b/dev/libs/data_processing/src/config.cpp
deleted file mode 100644
index 5d638e0..0000000
--- a/dev/libs/data_processing/src/config.cpp
+++ /dev/null
@@ -1,178 +0,0 @@
-#include <data_processing/config.h>
-
-namespace tp = flash::types;
-using namespace flash::data_processing::config;
-
-inline std::map<Seed, std::string> seedToStringDefault{{Seed::fixed, "fixed"}, {Seed::clock, "clock"}};
-
-inline std::map<std::string, Seed> stringToSeedDefault{{"fixed", Seed::fixed}, {"clock", Seed::clock}};
-
-Seed nodeToSeed(const YAML::Node &node, const std::string &key, const Seed &defaultValue,
-                const std::map<std::string, Seed> &stringToSeed = stringToSeedDefault) {
-    try {
-        return stringToSeed.at(node[key].as<std::string>());
-    } catch (YAML::InvalidNode) {
-        return defaultValue;
-    } catch (std::out_of_range) {
-        throw InvalidConfigurationException("Invalid option for seed.");
-    }
-    return Seed::invalid;
-}
-
-template <typename T>
-T nodeToValue(const YAML::Node &node, std::string msg) {
-    try {
-        return node.as<T>();
-    } catch (...) {
-        throw InvalidConfigurationException(msg);
-    }
-    return T();
-}
-
-template <typename T>
-T nodeToValueWithDefault(const YAML::Node &node, const std::string &key, const T &defaultValue, std::string msg) {
-    try {
-        return node[key].as<T>();
-        ;
-    } catch (YAML::InvalidNode) {
-        return defaultValue;
-    } catch (...) {
-        throw InvalidConfigurationException(msg);
-    }
-    return T();
-}
-
-template <typename T, tp::size N>
-auto nodeToArray(const YAML::Node &node, bool (*rule)(T value), std::string msg) {
-    try {
-        std::array<T, N> values;
-        tp::size idx = 0;
-        for (auto element : node) {
-            values[idx] = node.as<T>();
-        }
-        return values;
-    } catch (...) {
-        throw InvalidConfigurationException(msg);
-    }
-    return std::array<T, N>();
-}
-
-Config::Config(const YAML::Node &configYamlNode, const std::vector<std::string> &allowedKeys,
-               const std::vector<std::string> &mandatoryKeys, const DefaultConfig &defaults) {
-
-    // extract keys from yaml node
-    std::vector<std::string> keysInNode;
-    for (auto kv : configYamlNode) {
-        auto key = kv.first.as<std::string>();
-        keysInNode.push_back(key);
-    }
-
-    // verify that all keys from keysInNode that are in allowedKeys
-    for (auto key : keysInNode) {
-        if (std::find(allowedKeys.begin(), allowedKeys.end(), key) == allowedKeys.end()) {
-            throw InvalidKeyException("Configuration has a forbidden parameter: " + key + " = " +
-                                      configYamlNode[key].as<std::string>());
-        }
-    }
-
-    // verify that keys from mandatoryKeys are in keysInNode
-    for (auto key : mandatoryKeys) {
-        if (std::find(keysInNode.begin(), keysInNode.end(), key) == keysInNode.end()) {
-            throw MissingKeyException("Configuration is missing a mandatory parameter: " + key);
-        }
-    }
-
-    try {
-        n_k_points = nodeToValue<tp::size>(configYamlNode["n_k_points"], "n_k_points is wrongly initialized.");
-        n_occupied_total =
-            nodeToValue<tp::size>(configYamlNode["n_occupied_total"], "n_occupied_total is wrongly initialized.");
-        n_unoccupied_total =
-            nodeToValue<tp::size>(configYamlNode["n_unoccupied_total"], "n_unoccupied_total is wrongly initialized.");
-        n_isdf_vexc = nodeToValue<tp::size>(configYamlNode["n_isdf_vexc"], "n_isdf_vexc is wrongly initialized.");
-        n_isdf_wscr_occupied = nodeToValue<tp::size>(configYamlNode["n_isdf_wscr_occupied"],
-                                                     "n_isdf_wscr_occupied is wrongly initialized.");
-        n_isdf_wscr_unoccupied = nodeToValue<tp::size>(configYamlNode["n_isdf_wscr_unoccupied"],
-                                                       "n_isdf_wscr_unoccupied is wrongly initialized.");
-        max_lanczos_iterations = nodeToValue<tp::size>(configYamlNode["max_lanczos_iterations"],
-                                                       "max_lanczos_iterations is wrongly initialized.");
-        omega_range = nodeToValue<std::array<tp::real_dp, 2>>(configYamlNode["omega_range"],
-                                                              "omega_range is wrongly initialized.");
-        n_omega = nodeToValue<tp::size>(configYamlNode["n_omega"], "n_omega is wrongly initialized.");
-        max_cvt_iterations =
-            nodeToValueWithDefault<tp::size>(configYamlNode, "max_cvt_iterations", defaults.max_cvt_Itereations,
-                                             "max_cvt_iterations is wrongly initialized.");
-        cvt_convergence_criterium = nodeToValueWithDefault<tp::real_dp>(
-            configYamlNode, "cvt_convergence_criterium", defaults.cvt_convergence_criterium,
-            "cvt_convergence_criterium is wrongly initialized.");
-        seed_source = nodeToSeed(configYamlNode, "seed_source", defaults.seed_source);
-
-    } catch (const InvalidConfigurationException) {
-        throw;
-    }
-}
-
-void Config::validate() {
-
-    // Rule for n_k_points
-    if (n_k_points == 0) {
-        throw InvalidConfigurationException("n_k_points must be > 0.");
-    }
-    // Rule for n_occupied_total
-    if (n_occupied_total == 0) {
-        throw InvalidConfigurationException("n_occupied_total must be > 0.");
-    }
-    // Rule for n_unoccupied_total
-    if (n_unoccupied_total == 0) {
-        throw InvalidConfigurationException("n_unoccupied_total must be > 0.");
-    }
-    // Rule for n_occupied_total + n_unoccupied_total
-    if ((n_unoccupied_total + n_occupied_total) % n_k_points != 0) {
-        throw InvalidConfigurationException("n_occupied_total + n_unoccupied_total must be divisable by n_k_points.");
-    }
-    // Rules for n_isdf_vexc
-    if (n_isdf_vexc == 0) {
-        throw InvalidConfigurationException("n_isdf_vexc must be > 0.");
-    }
-    if (n_isdf_vexc > n_occupied_total * n_unoccupied_total / n_k_points) {
-        throw InvalidConfigurationException(
-            "n_isdf_vexc must be <= n_occupied_total * n_unoccupied_total / n_k_points.");
-    }
-    // Rules for n_isdf_wscr_occupied
-    if (n_isdf_wscr_occupied == 0) {
-        throw InvalidConfigurationException("n_isdf_wscr_occupied must be > 0.");
-    }
-    if (n_isdf_wscr_occupied > std::pow(n_occupied_total, 2)) {
-        throw InvalidConfigurationException("n_isdf_wscr_occupied must be <= n_occupied_total^2.");
-    }
-    // Rules for n_isdf_wscr_unoccupied
-    if (n_isdf_wscr_unoccupied == 0) {
-        throw InvalidConfigurationException("n_isdf_wscr_unoccupied must be > 0.");
-    }
-    if (n_isdf_wscr_unoccupied > std::pow(n_occupied_total, 2)) {
-        throw InvalidConfigurationException("n_isdf_wscr_unoccupied must be <= n_occupied_total^2.");
-    }
-    // Rule for max_lanczos_iterations
-    if (max_lanczos_iterations == 0) {
-        throw InvalidConfigurationException("max_lanczos_iterations must be > 0.");
-    }
-    // Rule for omega_range
-    if (sizeof(omega_range) != 2) {
-        throw InvalidConfigurationException("omega_range must contain exactly 2 values.");
-    }
-    if (omega_range[0] >= omega_range[1]) {
-        throw InvalidConfigurationException(
-            "Lower limit of omega_range (left value) must be smaller then the upper limit (right value).");
-    }
-    // Rule for n_omega
-    if (n_omega == 0) {
-        throw InvalidConfigurationException("n_omega must be > 0.");
-    }
-    // Rule for max_cvt_iterations
-    if (cvt_convergence_criterium == 0) {
-        throw InvalidConfigurationException("cvt_convergence_criterium must be > 0.");
-    }
-    // Rule for seed_source
-    if (seed_source == Seed::invalid) {
-        throw InvalidConfigurationException("seed_source is invalid.");
-    }
-}
diff --git a/dev/libs/data_processing/src/read_hdf5.cpp b/dev/libs/data_processing/src/read_hdf5.cpp
deleted file mode 100644
index f242acc..0000000
--- a/dev/libs/data_processing/src/read_hdf5.cpp
+++ /dev/null
@@ -1,37 +0,0 @@
-#include <data_processing/read_hdf5.h>
-
-namespace tp = flash::types;
-using namespace flash::data_processing::read_hdf5;
-
-tp::DVector readDoubleVectorHDF5(const std::string &filename, const std::string &datasetName) {
-    try {
-        // Open the HDF5 file
-        H5::H5File file(filename, H5F_ACC_RDONLY);
-
-        // Open the dataset
-        H5::DataSet dataset = file.openDataSet(datasetName);
-
-        // Get the dataspace and the size of the dataset
-        H5::DataSpace dataspace = dataset.getSpace();
-        hsize_t dims[1];
-        int ndims = dataspace.getSimpleExtentDims(dims, nullptr);
-
-        // Read data into a std::vector<double>
-        std::vector<tp::real_dp> buffer(dims[0]);
-        dataset.read(buffer.data(), H5::PredType::NATIVE_DOUBLE);
-
-        // Convert std::vector to tp::DVector
-        tp::DVector eigenVector = Eigen::Map<tp::DVector>(buffer.data(), buffer.size());
-
-        return eigenVector;
-    } catch (H5::FileIException &error) {
-        error.printErrorStack();
-    } catch (H5::DataSetIException &error) {
-        error.printErrorStack();
-    } catch (H5::DataSpaceIException &error) {
-        error.printErrorStack();
-    }
-
-    // Return an empty vector in case of an error
-    return tp::DVector();
-}
\ No newline at end of file
diff --git a/dev/libs/electrons/CMakeLists.txt b/dev/libs/electrons/CMakeLists.txt
deleted file mode 100644
index bfc48ef..0000000
--- a/dev/libs/electrons/CMakeLists.txt
+++ /dev/null
@@ -1,15 +0,0 @@
-#project(lightning-config)
-
-add_library(electrons src/electrons.cpp)
-
-target_link_libraries(electrons 
-        PRIVATE 
-            Eigen3::Eigen
-            types)
-
-target_include_directories(electrons
-        PUBLIC
-            include
-        PRIVATE
-            src
-)
\ No newline at end of file
diff --git a/dev/libs/electrons/include/electrons/electrons.h b/dev/libs/electrons/include/electrons/electrons.h
deleted file mode 100644
index 9164981..0000000
--- a/dev/libs/electrons/include/electrons/electrons.h
+++ /dev/null
@@ -1,22 +0,0 @@
-//
-// Created by benedikt on 29.03.24.
-//
-
-#ifndef FLASH_ELECTRONS_H
-#define FLASH_ELECTRONS_H
-
-#include <types/types.h>
-
-#include <cstdint>
-
-namespace electron {
-
-class ElectronSystem {
-   private:
-   public:
-    //  ElectronSystem(const DMatrix $energies, const DMatrix $occupation, const std::size_t &nKPoints);
-};
-
-}  // namespace electron
-
-#endif  // FLASH_ELECTRONS_H
diff --git a/dev/libs/electrons/src/electrons.cpp b/dev/libs/electrons/src/electrons.cpp
deleted file mode 100644
index d5d1ef3..0000000
--- a/dev/libs/electrons/src/electrons.cpp
+++ /dev/null
@@ -1,11 +0,0 @@
-//
-// Created by benedikt on 29.03.24.
-//
-
-#include "electrons/electrons.h"
-
-using namespace electron;
-
-// ElectronSystem::ElectronSystem(const DMatrix $energies, const DMatrix $occupation, const std::size_t &nKPoints) {
-
-// }
diff --git a/dev/libs/types/CMakeLists.txt b/dev/libs/types/CMakeLists.txt
deleted file mode 100644
index afd9f49..0000000
--- a/dev/libs/types/CMakeLists.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-#project(lightning-types)
-
-add_library(types src/types.cpp)
-
-target_link_libraries(types Eigen3::Eigen)
-
-target_include_directories(types
-        PUBLIC
-            include
-        PRIVATE
-            src
-)
\ No newline at end of file
diff --git a/dev/libs/types/include/types/types.h b/dev/libs/types/include/types/types.h
deleted file mode 100644
index d8b1e51..0000000
--- a/dev/libs/types/include/types/types.h
+++ /dev/null
@@ -1,27 +0,0 @@
-#ifndef FLASH_TYPES_H
-#define FLASH_TYPES_H
-
-#include <yaml-cpp/yaml.h>
-
-#include <Eigen/Dense>
-#include <array>
-#include <complex>
-#include <cstdint>
-#include <string>
-
-namespace flash {
-namespace types {
-
-typedef std::size_t size;
-typedef std::double_t real_dp;
-typedef std::complex<real_dp> complex_dp;
-
-typedef Eigen::Vector<real_dp, Eigen::Dynamic> DVector;
-typedef Eigen::Vector<complex_dp, Eigen::Dynamic> CVector;
-typedef Eigen::Matrix<real_dp, Eigen::Dynamic, Eigen::Dynamic> DMatrix;
-typedef Eigen::Matrix<complex_dp, Eigen::Dynamic, Eigen::Dynamic> CMatrix;
-
-}  // namespace types
-}  // namespace flash
-
-#endif  // FLASH_TYPES_H
\ No newline at end of file
diff --git a/dev/libs/types/src/types.cpp b/dev/libs/types/src/types.cpp
deleted file mode 100644
index cb68c10..0000000
--- a/dev/libs/types/src/types.cpp
+++ /dev/null
@@ -1,7 +0,0 @@
-//
-// Created by benedikt on 15.07.24.
-//
-
-#include <types/types.h>
-
-using namespace flash;
diff --git a/dev/tests/CMakeLists.txt b/dev/tests/CMakeLists.txt
index 9a2bd2d..e69de29 100644
--- a/dev/tests/CMakeLists.txt
+++ b/dev/tests/CMakeLists.txt
@@ -1 +0,0 @@
-add_subdirectory(data_processing)
\ No newline at end of file
diff --git a/dev/tests/data_processing/CMakeLists.txt b/dev/tests/data_processing/CMakeLists.txt
deleted file mode 100644
index 70d3c79..0000000
--- a/dev/tests/data_processing/CMakeLists.txt
+++ /dev/null
@@ -1,26 +0,0 @@
-# Add the test executable
-add_executable(data_processing_tests)
-
-# Collect all .cpp files in the 'src' directory
-file(GLOB_RECURSE SOURCE_FILES "src/*.cpp")
-
-# Add the collected source files to the target
-target_sources(data_processing_tests PRIVATE ${SOURCE_FILES})
-
-# Link the library and Catch2 to the test executable
-target_link_libraries(data_processing_tests 
-    PRIVATE 
-        Catch2::Catch2WithMain
-        data_processing 
-        yaml-cpp 
-)
-
-target_include_directories(data_processing_tests
-    PRIVATE
-        src
-        ${catch2_SOURCE_DIR}/include
-)
-
-
-# Add the tests to CTest
-add_test(NAME data_processing_test COMMAND data_processing_tests)
\ No newline at end of file
diff --git a/dev/tests/data_processing/src/config_test.cpp b/dev/tests/data_processing/src/config_test.cpp
deleted file mode 100644
index 6624517..0000000
--- a/dev/tests/data_processing/src/config_test.cpp
+++ /dev/null
@@ -1,228 +0,0 @@
-#define CATCH_CONFIG_MAIN
-
-#include <catch2/catch.hpp>
-#include <yaml-cpp/yaml.h>
-
-#include <data_processing/config.h>
-#include <types/types.h>
-
-namespace tp = flash::types;
-using namespace flash::data_processing::config;
-
-/**
- * @brief string of a valid config.yaml that defines all parameters.
- */
-std::string config_yaml = R"(
-    n_k_points: 50
-    n_occupied_total: 13
-    n_unoccupied_total: 37
-    n_isdf_vexc: 3
-    n_isdf_wscr_occupied: 4
-    n_isdf_wscr_unoccupied: 5
-    max_lanczos_iterations: 200
-    omega_range: [1.0, 2.0]
-    n_omega: 1500
-    max_cvt_iterations: 333
-    cvt_convergence_criterium: 1.e-6
-    seed_source: fixed
-)";
-
-/**
- * @brief string of a valid config.yaml that defines only mandatory parameters.
- */
-std::string default_config_yaml = R"(
-    n_k_points: 50
-    n_occupied_total: 13
-    n_unoccupied_total: 37
-    n_isdf_vexc: 3
-    n_isdf_wscr_occupied: 4
-    n_isdf_wscr_unoccupied: 5
-    max_lanczos_iterations: 200
-    omega_range: [1.0, 2.0]
-    n_omega: 1500
-)";
-
-TEST_CASE("Test Config construction from a valid YAML::node that defines all parameters.", "[valid-config]") {
-    Config params(YAML::Load(config_yaml));
-    REQUIRE(params.n_k_points == 50);
-    REQUIRE(params.n_occupied_total == 13);
-    REQUIRE(params.n_unoccupied_total == 37);
-    REQUIRE(params.n_isdf_vexc == 3);
-    REQUIRE(params.n_isdf_wscr_occupied == 4);
-    REQUIRE(params.n_isdf_wscr_unoccupied == 5);
-    REQUIRE(params.max_lanczos_iterations == 200);
-    REQUIRE(params.omega_range == std::array<tp::real_dp, 2>{1.0, 2.0});
-    REQUIRE(params.n_omega == 1500);
-    REQUIRE(params.max_cvt_iterations == 333);
-    REQUIRE(params.cvt_convergence_criterium == 1e-6);
-    REQUIRE(params.seed_source == Seed::fixed);
-}
-
-TEST_CASE("Test Config construction from a valid YAML::node that defines not all parameters.",
-          "[valid-config-default]") {
-    Config params(YAML::Load(default_config_yaml));
-    REQUIRE(params.n_k_points == 50);
-    REQUIRE(params.n_occupied_total == 13);
-    REQUIRE(params.n_unoccupied_total == 37);
-    REQUIRE(params.n_isdf_vexc == 3);
-    REQUIRE(params.n_isdf_wscr_occupied == 4);
-    REQUIRE(params.n_isdf_wscr_unoccupied == 5);
-    REQUIRE(params.max_lanczos_iterations == 200);
-    REQUIRE(params.omega_range == std::array<tp::real_dp, 2>{1.0, 2.0});
-    REQUIRE(params.n_omega == 1500);
-    REQUIRE(params.max_cvt_iterations == 1000);
-    REQUIRE(params.cvt_convergence_criterium == 1e-5);
-    REQUIRE(params.seed_source == Seed::clock);
-}
-
-TEST_CASE("Test Config construction from an invalid YAML::node that uses a forbidden key.",
-          "[invalid-config-missing-param]") {
-    auto configNode = YAML::Load(config_yaml);
-    configNode["naughty"] = "no";  // assign value to forbidden key "naugty"
-    REQUIRE_THROWS_AS(Config(configNode), InvalidKeyException);
-}
-
-TEST_CASE("Test Config construction from an invalid YAML::node that does not define all mandatory parameters.",
-          "[invalid-config-missing-param]") {
-    auto configNode = YAML::Load(config_yaml);
-    configNode.remove("n_k_points");
-    REQUIRE_THROWS_AS(Config(configNode), MissingKeyException);
-
-    configNode = YAML::Load(config_yaml);
-    configNode.remove("n_occupied_total");
-    REQUIRE_THROWS_AS(Config(configNode), MissingKeyException);
-
-    configNode = YAML::Load(config_yaml);
-    configNode.remove("n_unoccupied_total");
-    REQUIRE_THROWS_AS(Config(configNode), MissingKeyException);
-
-    configNode = YAML::Load(config_yaml);
-    configNode.remove("n_isdf_vexc");
-    REQUIRE_THROWS_AS(Config(configNode), MissingKeyException);
-
-    configNode = YAML::Load(config_yaml);
-    configNode.remove("n_unoccupied_total");
-    REQUIRE_THROWS_AS(Config(configNode), MissingKeyException);
-
-    configNode = YAML::Load(config_yaml);
-    configNode.remove("n_isdf_vexc");
-    REQUIRE_THROWS_AS(Config(configNode), MissingKeyException);
-
-    configNode = YAML::Load(config_yaml);
-    configNode.remove("n_isdf_wscr_occupied");
-    REQUIRE_THROWS_AS(Config(configNode), MissingKeyException);
-
-    configNode = YAML::Load(config_yaml);
-    configNode.remove("n_unoccupied_total");
-    REQUIRE_THROWS_AS(Config(configNode), MissingKeyException);
-
-    configNode = YAML::Load(config_yaml);
-    configNode.remove("max_lanczos_iterations");
-    REQUIRE_THROWS_AS(Config(configNode), MissingKeyException);
-
-    configNode = YAML::Load(config_yaml);
-    configNode.remove("omega_range");
-    REQUIRE_THROWS_AS(Config(configNode), MissingKeyException);
-
-    configNode = YAML::Load(config_yaml);
-    configNode.remove("n_omega");
-    REQUIRE_THROWS_AS(Config(configNode), MissingKeyException);
-}
-
-TEST_CASE("Test Config construction from an invalid YAML::node that defines a parameter illegally.",
-          "[invalid-config]") {
-    auto configNode = YAML::Load(config_yaml);
-    configNode["n_isdf_vexc"] = "nope";
-    REQUIRE_THROWS_AS(Config(configNode), InvalidConfigurationException);
-
-    configNode = YAML::Load(config_yaml);
-    configNode["cvt_convergence_criterium"] = "nope";
-    REQUIRE_THROWS_AS(Config(configNode), InvalidConfigurationException);
-
-    configNode = YAML::Load(config_yaml);
-    configNode["seed_source"] = "nope";
-    REQUIRE_THROWS_AS(Config(configNode), InvalidConfigurationException);
-
-    configNode = YAML::Load(config_yaml);
-    configNode["omega_range"] = 1.0;
-    REQUIRE_THROWS_AS(Config(configNode), InvalidConfigurationException);
-}
-
-TEST_CASE("Test Config construction from an invalid YAML::node that defines a parameter wrongly.", "[invalid-config]") {
-    // Check n_k_points rule
-    auto configNode = YAML::Load(config_yaml);
-    configNode["n_k_points"] = 0;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-
-    // Check n_occupied_total rule
-    configNode = YAML::Load(config_yaml);
-    configNode["n_occupied_total"] = 0;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-
-    // Check n_unoccupied_total rule
-    configNode = YAML::Load(config_yaml);
-    configNode["n_unoccupied_total"] = 0;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-
-    // Check n_occupied_total + n_unoccupied_total rule
-    configNode = YAML::Load(config_yaml);
-    configNode["n_occupied_total"] = 13;
-    configNode["n_unoccupied_total"] = 38;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-
-    // Checkn_isdf_vexc rules
-    configNode = YAML::Load(config_yaml);
-    configNode["n_isdf_vexc"] = 0;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-    configNode["n_isdf_vexc"] = 10;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-
-    // n_isdf_wscr_occupied rules
-    configNode = YAML::Load(config_yaml);
-    configNode["n_isdf_wscr_occupied"] = 0;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-    configNode["n_isdf_wscr_occupied"] = 170;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-
-    // n_isdf_wscr_unoccupied rules
-    configNode = YAML::Load(config_yaml);
-    configNode["n_isdf_wscr_unoccupied"] = 0;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-    configNode["n_isdf_wscr_unoccupied"] = 1407;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-
-    // max_lanczos_iterations rule
-    configNode = YAML::Load(config_yaml);
-    configNode["max_lanczos_iterations"] = 0;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-
-    // omega_range rules
-    configNode = YAML::Load(config_yaml);
-    configNode.remove("omega_range");
-    configNode["omega_range"].push_back(2.0);
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-    configNode.remove("omega_range");
-    configNode["omega_range"].push_back(2.0);
-    configNode["omega_range"].push_back(1.0);
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-    configNode.remove("omega_range");
-    configNode["omega_range"].push_back(1.0);
-    configNode["omega_range"].push_back(2.0);
-    configNode["omega_range"].push_back(3.0);
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-
-    // n_omega rule
-    configNode = YAML::Load(config_yaml);
-    configNode["n_omega"] = 0;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-
-    // max_cvt_iterations rule
-    configNode = YAML::Load(config_yaml);
-    configNode["max_cvt_iterations"] = 0;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-
-    // cvt_convergence_criterium rule
-    configNode = YAML::Load(config_yaml);
-    configNode["cvt_convergence_criterium"] = 0;
-    REQUIRE_THROWS_AS(Config(configNode).validate(), InvalidConfigurationException);
-}