a bit o' spruce, from http://play.spruce.cf

spruce.json

{"flavor":"1.13.0","prune":["meta"],"env":["HOME=/home/user"],"cherry_pick":[],"yaml":[{"filename":"file1.yml","contents":"meta:\n  base_network: 1.2.3.4/24\n  index: 20\n  count: 2\n\nip: (( ips meta.base_network meta.index ))\nip_range: (( ips meta.base_network meta.index meta.count ))\n"}],"skip_eval":false,"fallback_append":false,"go_patch":false,"debug":false,"trace":false}