diff options
Diffstat (limited to 'tvix/eval/src/builtins')
| -rw-r--r-- | tvix/eval/src/builtins/mod.rs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tvix/eval/src/builtins/mod.rs b/tvix/eval/src/builtins/mod.rs index eeb784ce4468..b859e2844ee8 100644 --- a/tvix/eval/src/builtins/mod.rs +++ b/tvix/eval/src/builtins/mod.rs @@ -294,6 +294,23 @@ fn pure_builtins() -> Vec<Builtin> { let value = args[0].force(vm)?; Ok(Value::Bool(matches!(*value, Value::String(_)))) }), + Builtin::new("listToAttrs", &[true], |args: Vec<Value>, vm: &mut VM| { + let list = args[0].to_list()?; + let mut map = BTreeMap::new(); + for val in list { + let attrs = val.force(vm)?.to_attrs()?; + let get = |key| { + attrs + .select(key) + .ok_or(ErrorKind::AttributeNotFound { name: key.into() }) + }; + let name = get("name")?.to_str()?; + let value = get("value")?.clone(); + // Map entries earlier in the list take precedence over entries later in the list + map.entry(name).or_insert(value); + } + Ok(Value::attrs(NixAttrs::from_map(map))) + }), Builtin::new( "mul", &[false, false], |