Maybe I'm a bit biased because I was there for a study visit in the eighties. Of course it depends on the use case; if the composition is fully electronic, the composer can essentially be the same person as the performer, conductor and producer, so there is no big need for a score; live coding goes even further and "the composition" appears during the performance; specific tools have been implemented for these use-cases (e.g. Standford has a long tradition for such tools).