| 29 May 2025 |
 Robert Hensing (roberth) | correct - an unmodified bindgen, which uses clang as a library internally for code generation, whereas Nix is built with gcc | 16:23:39 |
 Leonardo Santiago | and how do you make it link with gcc correctly? | 16:25:45 |
| Leonardo Santiago | I've taken a look at your nci.nix and I thought it might be either the postConfigure script or the NIX_CC_UNWRAPPED part but none of these had any effect | 16:26:26 |
| Leonardo Santiago | oh, I see the issue, the script seems to be correctly adding gcc into the include path, but it's gcc13, not the one used by nix | 16:54:42 |
| Leonardo Santiago | and this is because I'm on nixos-24.11 not nixos-unstable! | 16:57:00 |
| Leonardo Santiago | * and this is because I'm on nixos-24.11 not nixos-unstable, so updating it did not fast forward it enough | 16:57:09 |
| Leonardo Santiago | finally | 16:57:19 |
| Leonardo Santiago | * finally it works | 16:57:22 |
| Leonardo Santiago | now I'm having trouble with libflake-c | 19:52:30 |
| Leonardo Santiago | for instance, I cannot seem to simply call nix_flake_reference_and_fragment_from_string | 19:53:58 |
| Leonardo Santiago | it complains that
Error: nix::MissingExperimentalFeature: experimental Nix feature 'flakes' is disabled; add '--extra-experimental-features flakes' to enable it
NixInfo: error: experimental Nix feature 'flakes' is disabled; add '--extra-experimental-features flakes' to enable it
| 19:54:45 |
| Leonardo Santiago | I imagined this was because I didn't have any NixEvalState associated, as I'm simply trying to parse a flake reference, not evaluate it | 19:55:21 |
| Leonardo Santiago | * I imagined this was because I didn't have any NixEvalState associated, as I'm simply trying to parse a flake reference, not evaluate it, and thus I didn't call nix_flake_settings_add_to_eval_state_builder | 19:55:47 |
| Leonardo Santiago | fine, I tried hooking up flake_settings to my existing NixEvalStateBuilder, calling the add_to_eval-state_builder and .... nothing, still the same error | 19:57:05 |
| Leonardo Santiago | * fine, I tried hooking up flake_settings to my existing NixEvalStateBuilder - even though there's no need when it is just for parsing, but I digress - called the add_to_eval-state_builder and .... nothing, still the same error | 19:57:44 |
| Leonardo Santiago | calling (the equivalent of) nix_setting_set("extra-experimental-features", "flakes") complains about Error: Key does not exist - and I believe the whole point of the libflake-c is to not need to explicitly set it through this roundabout method anyway | 20:00:27 |
| Leonardo Santiago | Robert Hensing (roberth): is this supposed to work? is there some setup I need to do before calling flake_reference_and_fragment_from_string? I do not see any libflake_init or anything like that, so I don't quite understand | 20:01:44 |
| Leonardo Santiago | * fine, I tried hooking up flake_settings to my existing NixEvalStateBuilder - even though there should be no need when it is just for parsing, but I digress - called the add_to_eval-state_builder and .... nothing, still the same error | 20:03:00 |
| Leonardo Santiago | I cannot even understand where this error is being thrown from, it is happening when I call that specific function but I don't see anywhere inside it checking for the experimental feature | 20:08:45 |
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