Check

ci: FIX passing `os` as an array #2156

	name: Check

	on:
	workflow_dispatch: # can be triggered manually
	pull_request:
	types:
	- opened
	- reopened
	- synchronize
	push:
	branches-ignore:
	- update/*
	paths-ignore:
	- "LICENSE"

	jobs:
	prepare:
	runs-on: ubuntu-latest
	outputs:
	matrix: ${{ steps.set-matrix.outputs.matrix }}
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Install nix
	uses: cachix/install-nix-action@v31
	- name: Generate Nix Matrix
	id: set-matrix
	run: \|
	set -Eeu
	matrix="$(nix eval --json .#githubActions.matrix)"
	echo "matrix=$matrix" >> "$GITHUB_OUTPUT"

	build:
	uses: ./.github/workflows/build.yml
	needs:
	- prepare
	strategy:
	fail-fast: false
	matrix: ${{ fromJSON(needs.prepare.outputs.matrix) }}
	secrets: inherit
	with:
	name: ${{ matrix.name }} (${{ matrix.system }})
	system: ${{ matrix.system }}
	os: ${{ join( matrix.os, ' ' ) }} # FIXME: os is an array!
	attr: ${{ matrix.attr }}

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