chore: use pixi for codegen environment in ci #69

	name: Code Generation Check

	on:
	pull_request:

	permissions:
	contents: read

	jobs:
	codegen-check:
	name: Verify Code Generation
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v6
	with:
	submodules: recursive

	- uses: prefix-dev/setup-pixi@v0.9.3
	with:
	pixi-version: v0.62.2

	- name: Run code generation
	run: \|
	# fetch submodule tags since actions/checkout does not
	git submodule foreach 'git fetch --unshallow \|\| true'
	# Run all code generation steps
	make codegen

	- name: Check for uncommitted changes
	run: \|
	bash ./check_codegen.sh

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