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{
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;
};
})
|
