Account for removal of std::binary_function in C++17 #13

	name: Vcflib CI
	on: [push, pull_request]
	jobs:
	arch:
	name: vcflib-CI
	env:
	ACTIONS_ALLOW_UNSECURE_COMMANDS: 'true'
	runs-on: ubuntu-latest

	strategy:
	matrix:
	os: [ubuntu-latest]
	python-version: [3.8]
	steps:
	- name: apt update
	run: sudo apt-get -o Acquire::Retries=3 update
	- name: install dependencies
	run: sudo apt-get -o Acquire::Retries=3 install -y -V
	cmake
	libhts-dev
	libtabixpp-dev
	libtabixpp0
	pybind11-dev
	- uses: actions/checkout@v3
	- uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}
	- name: install zig using wget
	run: \|
	wget -q https://ziglang.org/builds/zig-linux-x86_64-0.11.0-dev.1313+bb15e4057.tar.xz
	tar xf zig-linux-x86_64-*.tar.xz
	./zig-linux-x86_64-*/zig version
	pwd
	ls -l zig-linux-*
	echo "$(pwd)/zig-linux-x86_64-0.11.0-dev.1313+bb15e4057" >> $GITHUB_PATH
	# echo "$(pwd)/zig-linux-x86_64-*" >> $GITHUB_PATH
	# echo "::add-path::./zig-linux*"
	echo GITHUB_PATH=$GITHUB_PATH
	# zig version
	# echo "{environment_variable_name}={value}" >> $GITHUB_ENV
	- name: Checkout submodules
	run: git submodule update --init --recursive
	- name: Configure
	run: \|
	echo $(pwd)/zig-linux-x86_64-* >> $GITHUB_PATH
	echo "$(pwd)/zig-linux-x86_64-0.11.0-dev.1313+bb15e4057" >> $GITHUB_PATH
	echo GITHUB_PATH=$GITHUB_PATH
	echo PATH=$PATH
	zig version
	mkdir -p build
	cd build
	cmake ..
	- name: Compile
	run: cmake --build build/ --verbose -- -j 2
	- name: Run tests
	run: \|
	cd build
	ctest --verbose

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