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feat(tvix/glue): Init fetcher builtins

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Initialize a new empty builtins module `fetcher_builtins`, which will
contain the builtins which fetch URLs from the internet:

* fetchurl
* fetchGit
* fetchTarball
* fetchTree (maybe? this is experimental)

These builtins are all implemented in CPP nix at:
https://github.com/NixOS/nix/blob/2.20.2/src/libexpr/primops/fetchTree.cc

These builtins are added to the evaluation context using a similar
mechanism to the derivation builtins, and have been added everywhere
derivation builtins were previously being added.

Change-Id: I133b91cc9560f23028621414537f712e7bd8a825
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10974
Autosubmit: aspen <root@gws.fyi>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This commit is contained in:
Aspen Smith 2024-02-19 10:17:13 -05:00 • committed by clbot
parent b147452948
commit 0db46dacea
6 changed files with 72 additions and 8 deletions
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3
tvix/glue/src/tvix_store_io.rs
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@ -475,7 +475,7 @@ mod tests {
use tvix_eval::{EvalIO, EvaluationResult};
use tvix_store::pathinfoservice::MemoryPathInfoService;
use crate::builtins::add_derivation_builtins;
use crate::builtins::{add_derivation_builtins, add_fetcher_builtins};
use super::TvixStoreIO;
@ -503,6 +503,7 @@ mod tests {
let mut eval = tvix_eval::Evaluation::new(io.clone() as Rc<dyn EvalIO>, true);
add_derivation_builtins(&mut eval, io.clone());
add_fetcher_builtins(&mut eval, io.clone());
// run the evaluation itself.
eval.evaluate(str, None)