--- Log opened Wed May 27 00:00:32 2020
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07:52 < PaulTroon> stevenroose: still a work in progress, but there is an effort to generalize Tamas' rust-wallet code here: https://github.com/bitcoindevkit
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08:13 < stevenroose> PaulTroon: hmm, is that using rust-wallet? or trying to replace it/improve on it in a fork?
08:16 < PaulTroon> stevenroose: hmm, right, I think more using/building on top of rust-wallet actually.
08:18 < stevenroose> PaulTroon: oh, ok that's interesting. I'll be doing the same probably and I'll be interested in feedback
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08:25 < stevenroose> More general Rust question about serde, in theory it should be possible to deserialize into a struct that has references instead of owned objects as long as the deserialize method makes sure the lifetime of the struct is the same as the byte slice or string ref it gets as input
08:25 < PaulTroon> stevenroose: sounds good; would love to see another cli impl and compare notes with notmanditory/steve.
08:26 < stevenroose> elichai2, andytoshi, BlueMatt any idea about that? (the serde question)
08:26 < stevenroose> perhaps it's possible but not with the derive. (the derive for Deserialize gives an error whenever a struct has a lifetime)
08:27 < stevenroose> hmm so yeah perhaps if you specify the deserializer method yourself, it'd work
08:44 < andytoshi> stevenroose: yes, it is definitely possible
08:44 < andytoshi> but not with derive
08:45 < andytoshi> the `Deserialize` trait takes a lifetime for this reason (you can use `DeserializeOwned` for most types which is a fair bit easier to use)
08:47 < stevenroose> What would we do if serde would also blatantly disregard MSRV?? Why would we be using Rust at all then? :D
08:59 < andytoshi> lol, so, i think serde-derive did actually do this to us
08:59 < andytoshi> or serde-json or something
09:03 < elichai2> yeah serde-derive bumped the syn and quote versions to 1 which breaks MSRV I think
09:03 < elichai2> stevenroose: ot sure what was your question though
09:05 < andytoshi> anyway in that case our solution was to stop using serde-derive and to go back to the macros i think...
09:05 < andytoshi> and we got into a fight with the serde maintainers who said they made no guarantees about supporting rust 1.22
09:06 < andytoshi> so anyway, if they *did* break MSRV we'd have to say "enabling the serde feature means you can't use 1.22" which would really suck for us at blockstream
09:07 < andytoshi> (though actually, i think at blockstream we're using bleeding edge rust versions in a few places ... but it would suck if we *had* to)
09:10 < elichai2> andytoshi: well technically mrustc can build rust 1.29, so we could bump it then
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09:13 < andytoshi> ah, yeah, if bumping to 1.29 fixed it maybe we'd do that
09:13 < andytoshi> i wish we could bump to 1.40+
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09:13 < andytoshi> i would like to have constexprs and the new module system
09:13 < andytoshi> and to have `dyn Trait`
09:14 < elichai2> yeah same here, I also wish we can replace my custom malloc like code with alloc::alloc and just choose alignment 16 (in rust-secp)
09:21 < elichai2> but yeah 1.40+ would be great hehe
09:21 < elichai2> I wonder when will mrustc do their next bump. because it's still the only way to bootstrap
09:30 < stevenroose> well, we could in principle try support two branches for a while and port over bug fixes and perhaps important features to the old branch?
09:31 < stevenroose> perhaps once 1.40 is 6 months old or so
09:34 < andytoshi> i think the divergences would be too massive
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--- Log closed Thu May 28 00:00:33 2020