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For example, most Rust projects use clap which provides really nice command line help menus and also have relatively good performance in general.
Well, actually, it was the OP who said, literally, that "the most interesting thing about Fish (...) will be that it is now written in Rust"
It’s true that dependencies from a repository only supports git right now.
Part of the issue there is just like, the VCS integration wasn’t don’t in a principled way (it happens!) and so it’s not simple. See here for more: https://github.com/rust-lang/cargo/issues/12102
and this is why i really loathe language package managers, because they're prone to this kind of thing. assuming one has no problems with the opinions made in a language itself, when it has a tightly bound package manager embedded into it's ecosystem (using rust without cargo is like pulling teeth) you have an entire extra hurdle of far more rigid and controversial opinions to deal with.
package managers are maybe next to shells with "it's several orders of magnitude harder to make a good one than it is to write a compiler." with the dozens, possibly hundreds of package managers i've touched over the years, there's only been one that i'd call "good". the absolute worst ones have always been language package managers. at this point i've basically written off the concept, even system package managers.
i don't think it's reasonable to assert that my own quirks and tastes are explicitly tended to. and that's why ideally you just give the programmer space to do whatever, hence why it's so hard. vcs is just one single point of contention. this isn't unique to rust by the way. cargo is arguably a bit better than the dune experience, it's a bit more flexible and feels simpler.
arguably system package managers are better here, since they're effectively opt-in by choosing what distribution of what operating system you use. language package managers don't have that luxury.
So the lack of darcs isn’t because the Cargo folks think it’s bad or something. Just that things don’t get added just because.
Re quirks, sure, that’s why rustc and cargo are different. You don’t have to use Cargo. Meta does not, the Linux kernel does not.
ideally it'd just have an interface you can write a module against. maybe they've added that? i sure hope they didn't have to hardcode the options of that new vcs switch ;)
> that’s why rustc and cargo are different
indeed. but rust analyzer really likes you to use cargo. i know it provides facilities for specifying a json in place of cargo.toml, which is great, but my limited experience with that saw me running into some weird issues (maybe they've been fixed, maybe it was just a skill issue.)
also i will say cargo does at least let you specify local paths as dependencies relatively painlessly, so it gets points for that escape hatch.
Maybe! This is how Meta uses RA, and they sponsor development, and I know at least one of the people working on it and he really cares about getting things right, so if you run into it again, you should open up an issue.