Great point: the big difference between futuristic visions and their results is often how well things work.
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The most common selling point I hear for Nix is having a list of all the packages you need.
On a traditional Linux distro, I just install things and forget about them. A curated, commented list would certainly be handy when I have a new system.
Difftastic has been cited in a paper!
Modernizing SMT-Based Type Error Localization https://arxiv.org/abs/2408.09034
The authors use difftastic to work out which parts of a buggy program have actually changed, a great use case :)
I hear people say that Go is often hard to search online (hence sometimes "Golang"), but the vast majority of language names are common words. Names with punctuation (C++, C#) are hard too.
Is this a big problem in practice? "Perl" isn't a dictionary word, but it's an exception.