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Hydra

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23 Jan 2024
@delroth:delroth.net@delroth:delroth.netspecifically: how can a ::Machine get built from a nix::Machine there17:44:53
@Ericson2314:matrix.orgJohn Ericson delroth: The ::machine has no fields which have to be set construction time, it just needs the new super class to be construct=ed 17:45:45
@delroth:delroth.net@delroth:delroth.netsure, but there isn't a ::Machine constructor from nix::Machine here, as far as I can tell - is that implicitly defined?17:47:48
@Ericson2314:matrix.orgJohn Ericson delroth: yes that is implicitly defined 17:49:23
@Ericson2314:matrix.orgJohn Ericson merely because ::Machine has no explicit constructor, and it has the public base class 17:49:44
@Ericson2314:matrix.orgJohn EricsonI would probably get rid of the inheritence eventually because inheritance is ugly :)17:50:11
@Ericson2314:matrix.orgJohn Ericsonbut that would be more churn because field names, so I am saving that for after the Nix-side code is cleaned up and matching Hydra17:50:35
@delroth:delroth.net@delroth:delroth.net
In reply to @Ericson2314:matrix.org
delroth: yes that is implicitly defined
after some digging the answer I was looking for was https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0017r1.html from C++17 :p
18:05:50
@delroth:delroth.net@delroth:delroth.netTIL18:05:59
@delroth:delroth.net@delroth:delroth.netI think this might be the first time I actually encounter this, somehow18:06:25
@Ericson2314:matrix.orgJohn Ericson delroth: ah OK 18:07:14
@Ericson2314:matrix.orgJohn EricsonI never did C++ pre C++17 and Nix :)18:07:26
24 Jan 2024
@donotdividebyzero:matrix.orgdonotdividebyzero joined the room.11:04:27
25 Jan 2024
@delroth:delroth.net@delroth:delroth.nethttps://github.com/NixOS/hydra/pull/1344 it finally annoyed me enough to spend 5min on it08:32:16

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