Add `hilbert_series` #34

	name: Treehash

	on:
	push:
	branches:
	- 'master'
	- 'release-'
	tags: '*'

	concurrency:
	# group by workflow and ref; the last slightly strange component ensures that for pull
	# requests, we limit to 1 concurrent job, but for the master branch we don't
	group: ${{ github.workflow }}-${{ github.ref }}-${{ github.ref != 'refs/heads/master' \|\| github.run_number }}
	# Cancel intermediate builds, but only if it is a pull request build.
	cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}

	jobs:
	treehash:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: "Set up Julia"
	uses: julia-actions/setup-julia@v1
	with:
	version: 1
	- name: "Cache artifacts"
	uses: julia-actions/cache@v1
	- name: "Build package"
	uses: julia-actions/julia-buildpkg@latest
	- name: "Check treehash match"
	run: \|
	julia --project --color=yes -e '
	using Pkg
	using libsingular_julia_jll
	path = libsingular_julia_jll.find_artifact_dir()
	path = joinpath(path, "lib", "libsingular_julia.treehash")
	jll_hash = chomp(read(path, String))
	src_hash = bytes2hex(Pkg.GitTools.tree_hash(joinpath("deps", "src")))
	jll_hash == src_hash \|\| error("tree hash is $src_hash, but JLL uses $jll_hash")
	'

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