refactor(tvix/eval): Make `strict` an EvalMode enum r/8796

Refactor the `strict` boolean passed into evaluation at the top-level to
be a (two-variant, so far) EvalMode enum of Lazy and Strict.

This is more explicit than a boolean, and if we ever add more EvalModes
it's a simple extension of the enum.

Change-Id: I3de50e74ec971011664f6cd0999d08b792118410
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12186
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: aspen <root@gws.fyi>

1 files changed, 2 insertions, 2 deletions

diff --git a/tvix/serde/src/de.rs b/tvix/serde/src/de.rs
index 88cb46d618ce..0728311c6a13 100644
--- a/tvix/serde/src/de.rs
+++ b/tvix/serde/src/de.rs
@@ -3,7 +3,7 @@
 use bstr::ByteSlice;
 use serde::de::value::{MapDeserializer, SeqDeserializer};
 use serde::de::{self, EnumAccess, VariantAccess};
-use tvix_eval::{EvalIO, EvaluationBuilder, Value};
+use tvix_eval::{EvalIO, EvalMode, EvaluationBuilder, Value};
 
 use crate::error::Error;
 
@@ -48,7 +48,7 @@ where
     ) -> EvaluationBuilder<'co, 'ro, 'env, Box<dyn EvalIO>>,
 {
     // First step is to evaluate the Nix code ...
-    let eval = config(EvaluationBuilder::new_pure().strict()).build();
+    let eval = config(EvaluationBuilder::new_pure().mode(EvalMode::Strict)).build();
     let result = eval.evaluate(src, None);
 
     if !result.errors.is_empty() {