301 lines
10 KiB
Nix
301 lines
10 KiB
Nix
rec {
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description = "C++ MassSprings";
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inputs = {
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nixpkgs.url = "nixpkgs"; # Use nixpkgs from system registry
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flake-utils.url = "github:numtide/flake-utils";
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};
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outputs = {
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self,
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nixpkgs,
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flake-utils,
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}:
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# Create a shell (and possibly package) for each possible system, not only x86_64-linux
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flake-utils.lib.eachDefaultSystem (
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system: let
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pkgs = import nixpkgs {
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inherit system;
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config.allowUnfree = true;
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overlays = [];
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};
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inherit (pkgs) lib stdenv;
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# ===========================================================================================
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# Define custom dependencies
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# ===========================================================================================
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# 64 bit C/C++ compilers that don't collide (use the same libc)
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bintools = pkgs.wrapBintoolsWith {
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bintools = pkgs.bintools.bintools; # Unwrapped bintools
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libc = pkgs.glibc;
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};
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gcc = lib.hiPrio (pkgs.wrapCCWith {
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cc = pkgs.gcc.cc; # Unwrapped gcc
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libc = pkgs.glibc;
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bintools = bintools;
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});
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clang = pkgs.wrapCCWith {
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cc = pkgs.clang.cc; # Unwrapped clang
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libc = pkgs.glibc;
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bintools = bintools;
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};
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# Raylib CPP wrapper
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raylib-cpp = stdenv.mkDerivation {
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pname = "raylib-cpp";
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version = "5.5.0-unstable-2025-11-12";
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src = pkgs.fetchFromGitHub {
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owner = "RobLoach";
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repo = "raylib-cpp";
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rev = "21b0d0f57a09a7f741d20b7157f440ae87f02c76";
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hash = "sha256-P9x6Zc5t648gR7oYXe38PEX/a4oh4PfuVCnjT0vC10k=";
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};
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# autoPatchelfHook is needed for appendRunpaths
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nativeBuildInputs = with pkgs; [
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cmake
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# autoPatchelfHook
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];
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buildInputs = with pkgs; [
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raylib
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glfw
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SDL2
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];
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propagatedBuildInputs = with pkgs; [
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libGLU
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libx11
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];
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cmakeFlags = [
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"-DBUILD_RAYLIB_CPP_EXAMPLES=OFF"
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"-DBUILD_TESTING=OFF"
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# Point CMake to the nixpkgs raylib so it doesn't try to fetch its own
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"-Draylib_DIR=${pkgs.raylib}/lib/cmake/raylib"
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];
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};
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# ===========================================================================================
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# Specify dependencies
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# https://nixos.org/manual/nixpkgs/stable/#ssec-stdenv-dependencies-overview
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# Just for a "nix develop" shell, buildInputs can be used for everything.
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# ===========================================================================================
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# Add dependencies to nativeBuildInputs if they are executed during the build:
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# - Those which are needed on $PATH during the build, for example cmake and pkg-config
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# - Setup hooks, for example makeWrapper
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# - Interpreters needed by patchShebangs for build scripts (with the --build flag), which can be the case for e.g. perl
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nativeBuildInputs = with pkgs; [
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# Languages:
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# bintools
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gcc
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# clang
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# bintools_multilib
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# gcc_multilib
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# clang_multilib
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# C/C++:
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gdb
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valgrind
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# gnumake
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cmake
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# pkg-config
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# clang-tools
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# compdb
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# pprof
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gprof2dot
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kdePackages.kcachegrind
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gdbgui
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# renderdoc
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];
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# Add dependencies to buildInputs if they will end up copied or linked into the final output or otherwise used at runtime:
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# - Libraries used by compilers, for example zlib
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# - Interpreters needed by patchShebangs for scripts which are installed, which can be the case for e.g. perl
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buildInputs = with pkgs; [
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# C/C++:
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# boost
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# sfml
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raylib
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llvmPackages.openmp # not required for compilation but for clangd to find the headers
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# raylib-cpp
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# tinyobjloader
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# gperftools
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];
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# ===========================================================================================
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# Define buildable + installable packages
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# ===========================================================================================
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package = stdenv.mkDerivation rec {
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inherit buildInputs;
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pname = "masssprings";
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version = "0.0.1";
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src = ./.;
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nativeBuildInputs = with pkgs; [
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gcc
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cmake
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];
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installPhase = ''
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mkdir -p $out/bin
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mv ./${pname} $out/bin
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'';
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};
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in rec {
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# Provide package for "nix build"
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defaultPackage = package;
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defaultApp = flake-utils.lib.mkApp {
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drv = defaultPackage;
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};
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# Provide environment for "nix develop"
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devShells = {
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default = pkgs.mkShell {
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inherit nativeBuildInputs buildInputs;
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name = description;
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# =========================================================================================
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# Define environment variables
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# =========================================================================================
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# Custom dynamic libraries:
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# LD_LIBRARY_PATH = builtins.concatStringsSep ":" [
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# # Rust Bevy GUI app:
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# # "${pkgs.xorg.libX11}/lib"
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# # "${pkgs.xorg.libXcursor}/lib"
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# # "${pkgs.xorg.libXrandr}/lib"
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# # "${pkgs.xorg.libXi}/lib"
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# # "${pkgs.libGL}/lib"
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#
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# # JavaFX app:
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# # "${pkgs.libGL}/lib"
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# # "${pkgs.gtk3}/lib"
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# # "${pkgs.glib.out}/lib"
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# # "${pkgs.xorg.libXtst}/lib"
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# ];
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# Dynamic libraries from buildinputs:
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LD_LIBRARY_PATH = nixpkgs.lib.makeLibraryPath buildInputs;
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# =========================================================================================
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# Define shell environment
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# =========================================================================================
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# Setup the shell when entering the "nix develop" environment (bash script).
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shellHook = let
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mkCmakeScript = type: let
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typeLower = lib.toLower type;
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in
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pkgs.writers.writeFish "cmake-${typeLower}.fish" ''
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cd $FLAKE_PROJECT_ROOT
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# set -g -x CC ${clang}/bin/clang
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# set -g -x CXX ${clang}/bin/clang++
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echo "Removing build directory ./cmake-build-${typeLower}/"
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rm -rf ./cmake-build-${typeLower}
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echo "Creating build directory"
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mkdir cmake-build-${typeLower}
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cd cmake-build-${typeLower}
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echo "Running cmake"
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cmake -G "Unix Makefiles" \
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-DCMAKE_BUILD_TYPE="${type}" \
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..
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echo "Linking compile_commands.json"
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cd ..
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ln -sf ./cmake-build-${typeLower}/compile_commands.json ./compile_commands.json
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'';
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cmakeDebug = mkCmakeScript "Debug";
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cmakeRelease = mkCmakeScript "Release";
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mkBuildScript = type: let
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typeLower = lib.toLower type;
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in
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pkgs.writers.writeFish "cmake-build.fish" ''
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cd $FLAKE_PROJECT_ROOT/cmake-build-${typeLower}
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echo "Running cmake"
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cmake --build . -j$(nproc)
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'';
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buildDebug = mkBuildScript "Debug";
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buildRelease = mkBuildScript "Release";
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# Use this to specify commands that should be ran after entering fish shell
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initProjectShell = pkgs.writers.writeFish "init-shell.fish" ''
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echo "Entering \"${description}\" environment..."
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# Determine the project root, used e.g. in cmake scripts
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set -g -x FLAKE_PROJECT_ROOT (git rev-parse --show-toplevel)
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# C/C++:
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abbr -a cmake-debug "${cmakeDebug}"
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abbr -a cmake-release "${cmakeRelease}"
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abbr -a build-debug "${buildDebug}"
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abbr -a build-release "${buildRelease}"
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abbr -a debug "${buildDebug} && ./cmake-build-debug/masssprings"
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abbr -a release "${buildRelease} && ./cmake-build-release/masssprings"
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'';
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in
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builtins.concatStringsSep "\n" [
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# Launch into pure fish shell
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''
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exec "$(type -p fish)" -C "source ${initProjectShell} && abbr -a menu '${pkgs.bat}/bin/bat "${initProjectShell}"'"
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''
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];
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};
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# TODO: Doesn't work
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# FHS environment for renderdoc. Access with "nix develop .#renderdoc".
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# https://ryantm.github.io/nixpkgs/builders/special/fhs-environments
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# renderdoc =
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# (pkgs.buildFHSEnv {
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# name = "renderdoc-env";
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#
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# targetPkgs = pkgs:
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# with pkgs; [
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# # RenderDoc
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# renderdoc
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#
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# # Build tools
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# gcc
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# cmake
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#
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# # Raylib
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# raylib
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# libGL
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# mesa
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#
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# # X11
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# libx11
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# libxcursor
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# libxrandr
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# libxinerama
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# libxi
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# libxext
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# libxfixes
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#
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# # Wayland
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# wayland
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# wayland-protocols
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# libxkbcommon
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# ];
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#
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# runScript = "fish";
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#
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# profile = ''
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# '';
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# }).env;
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};
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}
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);
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}
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