@mhjort tämä: https://github.com/borkdude/sci
ja live-demo mallista: https://malli.io/?value=%7B%3Ax%203%2C%20%3Ay%202%7D&schema=%5B%3Aand%0A%20%5B%3Amap%20%5B%3Ax%20int%3F%5D%20%5B%3Ay%20int%3F%5D%5D%0A%20%5B%3Afn%0A%20%20%7B%3Aerror%2Fmessage%20%22x%20should%20be%20greater%20than%20y%22%7D%0A%20%20(fn%20%5B%7B%3Akeys%20%5Bx%20y%5D%7D%5D%20(%3E%20x%20y))%5D%5D
