| 30 Dec 2024 |
 Leonardo Santiago | In reply to @roberthensing:matrix.org
So if you were to reimplement parts of develop with the C API, you'd end up duplicating those problems, and you won't support user-defined shell runners yes, I very much noticed that, and I'd love if the environment variable handling logic was done entirely in nix | 14:42:47 |
| Leonardo Santiago | the problem I'm trying to tackle is turning a derivation into a runnable shell. it seems to me that all that needs to be done is concatenating the buildInputs paths and running the shellHook as the --rcfile | 14:51:13 |
| Leonardo Santiago | but looking at the develop c++ code, there are a bunch of stuff going on, including creating another derivation to export env vars as json, running it, parsing from json, and so on | 14:52:50 |
| Leonardo Santiago | is there any simple way to replicate that behavior without having to mimic the c++ code? i don't really understand what constraints are at play here so for me it seems just overcomplicating for (seemingly) no reason, but I'm sure there's some motive behind all this | 14:54:27 |
| 31 Dec 2024 |
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| 10 Jan 2025 |
| Leonardo Santiago | what's the difference between nix_store_realise and nix_string_realise when the value is a derivation path? and is there a way to build multiple paths when the derivation itself can't be built? or do i need to just call nix_store_realise in a loop - this does not seem very efficient | 14:12:30 |
| Leonardo Santiago | * what's the difference between nix_store_realise and nix_string_realise when the value is a derivation path? and is there a way to build multiple (input source) paths when the derivation itself can't be built? or do i need to just call nix_store_realise in a loop - this does not seem very efficient | 14:12:43 |
| Leonardo Santiago | * what's the difference between nix_store_realise and nix_string_realise when the value is a derivation path? and is there a way to build multiple (input source) paths when the derivation itself can't be built? calling nix_store_realise in a loop does not seem very efficient | 14:13:05 |
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| Leonardo Santiago | basically, is there any intent to add Store::buildPaths to the C API | 16:16:43 |
| 11 Jan 2025 |
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| 14 Jan 2025 |
 Mic92 | I used nixstorerealize instead of buildPaths in the past | 13:39:33 |
| Mic92 | I used nix_store_realize instead of buildPaths in the past | 13:39:49 |
| 15 Jan 2025 |
 Robert Hensing (roberth) | contributions welcome | 06:19:41 |
| Robert Hensing (roberth) | we do have nix_string_realise, in case your paths come from the same string in the expression language | 06:20:43 |
| Robert Hensing (roberth) |
what's the difference
The string one also works for strings that have multiple store paths in them, whereas nix_store_realise doesn't require the nix-expr library
| 06:22:58 |
| Leonardo Santiago | honestly I have been thinking about contributing given the amount of time I have been reading nix source code the last couple of days, but I have literally 0 experience in C++ | 15:23:43 |
| Leonardo Santiago | and most of the code still confuses me, specially regarding inheritance and file importing that creates "spooky action from distance" | 15:25:04 |
| Leonardo Santiago | but yeah, right now I need to implement a way to build a derivation through the C FFI, and honestly I think the easiest way will be to re-export as string, eval it, and use nix_string_realise onto it | 15:32:40 |
| 16 Jan 2025 |
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