Fixes and clarify workaround of access issue with friend functions with msvc #76

	name: Windows
	on:
	workflow_dispatch:
	pull_request:
	push:
	branches: [main]
	concurrency:
	group: ${{ github.workflow }}-${{ github.job }}-${{ github.ref }}
	cancel-in-progress: true
	defaults:
	run:
	shell: bash -e -l {0}
	jobs:
	build:
	runs-on: ${{ matrix.runs-on }}
	name: ${{ matrix.sys.compiler }}
	strategy:
	fail-fast: false
	matrix:
	runs-on: [windows-latest]
	sys:
	- {compiler: default}
	- {compiler: clang}

	steps:

	- name: Setup MSVC
	if: matrix.sys.compiler == 'default'
	uses: ilammy/msvc-dev-cmd@v1

	- name: Setup clang
	if: matrix.sys.compiler == 'clang'
	run: \|
	echo "CC=clang" >> $GITHUB_ENV
	echo "CXX=clang++" >> $GITHUB_ENV

	- name: Checkout code
	uses: actions/checkout@v3

	- name: Set conda environment
	uses: mamba-org/setup-micromamba@main
	with:
	environment-name: myenv
	environment-file: environment-dev.yml
	init-shell: bash
	cache-downloads: true
	create-args: \|
	ninja

	- name: Configure using CMake
	run: cmake -Bbuild -DCMAKE_BUILD_TYPE:STRING=Release -DCMAKE_INSTALL_PREFIX=$CONDA_PREFIX -DBUILD_TESTS=ON -G Ninja

	- name: Install
	working-directory: build
	run: cmake --install .

	- name: Build
	working-directory: build
	run: cmake --build . --target test_sparrow_lib --parallel 8

	- name: Run tests
	working-directory: build
	run: ./test/test_sparrow_lib

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