{ lib, stdenv, cmake, boost, catch2, fetchFromGitHub, }: stdenv.mkDerivation (finalAttrs: { pname = "cppitertools"; version = "2.1"; src = fetchFromGitHub { owner = "ryanhaining"; repo = "cppitertools"; rev = "refs/tags/v${finalAttrs.version}"; hash = "sha256-mii4xjxF1YC3H/TuO/o4cEz8bx2ko6U0eufqNVw5LNA="; }; __structuredAttrs = true; # cppitertools has support files for three buildsystems in its repo: # Scons, Bazel, and CMake. The first two only have definitions for running # tests. The CMake system defines tests and install targets, including a # cppitertools-config.cmake, which is really helpful for downstream consumers # to detect this package since it has no pkg-config. # However the CMake system also specifies the entire source repo as an install # target, including support files, the build directory, etc. # We can't simply take cppitertools-config.cmake for ourselves because before # install it's placed in non-specific private CMake subdirectory of the build # directory. # Therefore, we instead simply patch CMakeLists.txt to make the target that # installs the entire directory non-default, and then install the headers manually. strictDeps = true; doCheck = true; nativeBuildInputs = [ cmake ]; buildInputs = [ boost ]; nativeCheckInputs = [ catch2 ]; # Required on case-sensitive filesystems to not conflict with the Bazel BUILD # files that are also in that repo. cmakeBuildDir = "cmake-build"; includeInstallDir = "${builtins.placeholder "out"}/include/cppitertools"; cmakeInstallDir = "${builtins.placeholder "out"}/share/cmake"; # This version of cppitertools considers itself as having used the default value, # and issues warning, unless -Dcppitertools_INSTALL_CMAKE_DIR is present as an # *environment* variable. It doesn't actually use the value from this environment # variable at all though, so we still need to pass it in cmakeFlags. env.cppitertools_INSTALL_CMAKE_DIR = finalAttrs.cmakeInstallDir; cmakeFlags = [ "-Dcppitertools_INSTALL_CMAKE_DIR=${finalAttrs.cmakeInstallDir}" ]; prePatch = '' # Mark the `.` install target as non-default. substituteInPlace CMakeLists.txt \ --replace-fail " DIRECTORY ." " DIRECTORY . EXCLUDE_FROM_ALL" '' + lib.optionalString finalAttrs.doCheck '' # Required for tests. cp ${lib.getDev catch2}/include/catch2/catch.hpp test/ ''; checkPhase = '' runHook preCheck cmake -B build-test -S ../test cmake --build build-test -j$NIX_BUILD_CORES runHook postCheck ''; installPhase = '' runHook preInstall # Install the -config.cmake files. cmake --install . "--prefix=$out" # Install the headers. mkdir -p "$includeInstallDir" cp -r ../*.hpp ../internal "$includeInstallDir" runHook postInstall ''; meta = { description = "Implementation of Python itertools and builtin iteration functions for C++17"; longDescription = '' Range-based for loop add-ons inspired by the Python builtins and itertools library for C++17, using lazy evaluation wherever possible. ''; homepage = "https://github.com/ryanhaining/cppitertools"; maintainers = with lib.maintainers; [ qyriad ]; license = with lib.licenses; bsd2; }; })