feat(nixos): add default.nix for NixOS support

- Improved and formatted BUILDING_Linux.md
- Added default.nix for building Nelson on NixOS
- Modified CMakeLists.txt in modules/tests_manager

.gitignore

@@ -9,6 +9,7 @@
 #==============================================================================
 # This .gitignore for Nelson
 
+result/
 build/
 chocolatey/nelson/*.nupkg
 nelson*.snap

BUILDING_Linux.md

@@ -1,14 +1,47 @@
-# Building on Linux
+# Building Nelson on Linux
 
-- You can also see [ccpp.yml](https://github.com/nelson-lang/nelson/blob/master/.github/workflows/ccpp.yml) file to help you to see dependencies. This file is up-to-date about how to build Nelson on each platform.
+This guide provides instructions on how to build Nelson on Linux.
+For the most up-to-date information on dependencies and build instructions, refer to the [ccpp.yml](https://github.com/nelson-lang/nelson/blob/master/.github/workflows/ccpp.yml) file.
 
-- [ArchLinux package](https://aur.archlinux.org/packages/nelson-git)
+## ArchLinux
+
+Nelson is available as an ArchLinux package. You can install it using `paru`:
 
 ```bash
 paru nelson
 ```
 
-- You can also build nelson with a micromamba environment
+## NixOS
+
+To build Nelson on NixOS, you can use the provided [default.nix](https://github.com/nelson-lang/nelson/blob/master/default.nix) file.
+
+### Using the Latest Master Version
+
+To fetch the latest master version and build Nelson:
+replace sha256 by desired/latest sha256 commit.
+
+### Building Nelson
+
+To build Nelson using the default.nix file:
+
+```bash
+nix-build
+```
+
+### Evaluate Nelson
+
+```bash
+nix-shell
+./result/bin/nelson
+```
+
+### Install in your environment:
+
+```bash
+nix-env -i ./result
+```
+
+## You can also build nelson with a micromamba environment
 
 After installing micromamba
 

CHANGELOG.md

@@ -12,7 +12,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `urlencode`: Replace special characters in URLs with escape characters.
 - `docroot`: Utility to retrieve or define the root directory of Nelson Help.
 - `ismodule`: second input argument `isprotected` added.
-- `editor('editor_command', cmd)` allows to change text editor in Nelson (for example: VS Code)
+- `editor('editor_command', cmd)` allows to change text editor in Nelson (for example: VS Code).
+- NixOS 24.11 packaging (see [BUILDING_Linux.md](https://github.com/nelson-lang/nelson/blob/master/BUILDING_Linux.md)).
 
 ### Changed
 

default.nix

@@ -0,0 +1,72 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+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-DbmwDShdBjQXtpXjJ2QyApYxt7g7P13ap1uN3L0MPPc="; # Replace with the actual checksum
+};
+
+buildInputs = [
+];
+
+nativeBuildInputs = [
+pkgs.gcc # C++ compiler
+pkgs.cmake # Build system
+pkgs.gnumake # Make utility
+pkgs.zlib # Compression library
+pkgs.boost # Boost libraries
+pkgs.openssl # SSL support
+pkgs.gfortran # Fortran compiler (if needed for certain modules)
+pkgs.eigen # Eigen library
+pkgs.mpi # MPI support
+pkgs.hdf5 # HDF5 support
+pkgs.curl # cURL support
+pkgs.libgit2 # Git support
+pkgs.libsndfile # Sound file support
+pkgs.portaudio # PortAudio support
+pkgs.lapack # LAPACK support
+pkgs.openblas # OpenBLAS support
+pkgs.libjack2 # JACK support
+pkgs.taglib # TagLib support
+pkgs.alsa-oss # ALSA support
+pkgs.alsa-lib # ALSA support
+pkgs.matio # MATIO support
+pkgs.libcxx # C++ standard library
+pkgs.pkg-config # pkg-config for detecting dependencies
+pkgs.qt5.full # Qt for GUI support
+pkgs.qt5.wrapQtAppsHook # Wrapper for Qt applications
+];
+
+buildPhase = ''
+cmake . -DLGPL_ONLY=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=$out
+cmake --build . -- -j $(nproc)
+'';
+
+installPhase = ''
+make install
+'';
+
+# Wrap the application with Qt environment variables
+postInstall = ''
+wrapQtApp $out/bin/nelson
+'';
+
+checkPhase = ''
+'';
+
+doCheck = false;
+
+meta = {
+description = "Nelson programming language";
+homepage = "https://github.com/nelson-lang/nelson";
+license = pkgs.lib.licenses.lgpl3Plus;
+maintainers = with pkgs.lib.maintainers; [ Nelson-numerical-software ];
+};
+
+}

modules/tests_manager/CMakeLists.txt

@@ -97,6 +97,11 @@ install(
   DESTINATION "${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME}/modules/${module_name}"
   FILES_MATCHING
   PATTERN "*.m")
+install(
+  DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+  DESTINATION "${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME}/modules/${module_name}"
+  FILES_MATCHING
+  PATTERN "*.m")
 install(
   DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/help
   DESTINATION "${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME}/modules/${module_name}"