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{
lib,
stdenv,
cmake,
ninja,
fetchFromGitHub,
fetchpatch,
python3,
opencv,
nlohmann_json,
nanoflann,
glm,
cxxopts,
config,
# Upstream has rocm/hip support, too. anyone?
cudaSupport ? config.cudaSupport,
cudaPackages,
autoAddDriverRunpath,
}:
let
version = "1.1.2";
torch = python3.pkgs.torch.override { inherit cudaSupport; };
# Using a normal stdenv with cuda torch gives
# ld: /nix/store/k1l7y96gv0nc685cg7i3g43i4icmddzk-python3.11-torch-2.2.1-lib/lib/libc10.so: undefined reference to `std::ios_base_library_init()@GLIBCXX_3.4.32'
stdenv' = if cudaSupport then cudaPackages.backendStdenv else stdenv;
in
stdenv'.mkDerivation {
pname = "opensplat";
inherit version;
src = fetchFromGitHub {
owner = "pierotofy";
repo = "OpenSplat";
rev = "refs/tags/v${version}";
hash = "sha256-3tk62b5fSf6wzuc5TwkdfAKgUMrw3ZxetCJa2RVMS/s=";
};
patches = [
(fetchpatch {
name = "install-executables.patch";
url = "https://github.com/pierotofy/OpenSplat/commit/b4c4176819b508978583b7ebf66306171807a8e6.patch";
hash = "sha256-BUgPMcO3lt3ZEzv24u36k3aTEIoloOhxrCGi1KQ5Epk=";
})
];
postPatch = ''
# the two vendored gsplats are so heavily modified they may be considered a fork
find vendor ! -name 'gsplat*' -maxdepth 1 -mindepth 1 -exec rm -rf {} +
mkdir vendor/{nanoflann,glm}
ln -s ${glm}/include/glm vendor/glm/glm
ln -s ${nanoflann}/include/nanoflann.hpp vendor/nanoflann/nanoflann.hpp
ln -s ${nlohmann_json}/include/nlohmann vendor/json
ln -s ${cxxopts}/include/cxxopts.hpp vendor/cxxopts.hpp
'';
nativeBuildInputs = [
cmake
ninja
] ++ lib.optionals cudaSupport [
cudaPackages.cuda_nvcc
autoAddDriverRunpath
];
buildInputs = [
nlohmann_json
torch.cxxdev
torch
opencv
] ++ lib.optionals cudaSupport [
cudaPackages.cuda_cudart
];
env.TORCH_CUDA_ARCH_LIST = "${lib.concatStringsSep ";" python3.pkgs.torch.cudaCapabilities}";
cmakeFlags = [
(lib.cmakeBool "CMAKE_SKIP_RPATH" true)
] ++ lib.optionals cudaSupport [
(lib.cmakeFeature "GPU_RUNTIME" "CUDA")
(lib.cmakeFeature "CUDA_TOOLKIT_ROOT_DIR" "${cudaPackages.cudatoolkit}/")
];
meta = {
description = "Production-grade 3D gaussian splatting";
homepage = "https://github.com/pierotofy/OpenSplat/";
license = lib.licenses.mit;
maintainers = [ lib.maintainers.jcaesar ];
platforms = lib.platforms.linux ++ lib.optionals (!cudaSupport) lib.platforms.darwin;
};
}
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