diff --git a/nix-js/src/context.rs b/nix-js/src/context.rs
index 7d67c7e..10b98cb 100644
--- a/nix-js/src/context.rs
+++ b/nix-js/src/context.rs
@@ -10,7 +10,7 @@ use crate::codegen::{CodegenContext, compile};
 use crate::error::{Error, Result, Source};
 use crate::ir::{
     Arg, ArgId, Bool, Builtin, Downgrade as _, DowngradeContext, ExprId, Ir, Null, SymId, Thunk,
-    ToIr as _, synthetic_span,
+    ToIr as _,
 };
 use crate::runtime::{Runtime, RuntimeContext};
 use crate::store::{Store, StoreBackend, StoreConfig};
@@ -79,7 +79,7 @@ impl Ctx {
 
         irs.push(
             Builtins {
-                span: synthetic_span(),
+                span: rnix::TextRange::default(),
             }
             .to_ir(),
         );
@@ -114,7 +114,7 @@ impl Ctx {
                 "true",
                 Bool {
                     inner: true,
-                    span: synthetic_span(),
+                    span: rnix::TextRange::default(),
                 }
                 .to_ir(),
             ),
@@ -122,14 +122,14 @@ impl Ctx {
                 "false",
                 Bool {
                     inner: false,
-                    span: synthetic_span(),
+                    span: rnix::TextRange::default(),
                 }
                 .to_ir(),
             ),
             (
                 "null",
                 Null {
-                    span: synthetic_span(),
+                    span: rnix::TextRange::default(),
                 }
                 .to_ir(),
             ),
@@ -141,7 +141,7 @@ impl Ctx {
             irs.push(
                 Builtin {
                     inner: name_sym,
-                    span: synthetic_span(),
+                    span: rnix::TextRange::default(),
                 }
                 .to_ir(),
             );
@@ -394,7 +394,7 @@ impl DowngradeContext for DowngradeCtx<'_> {
             use crate::ir::{Attr, Select};
             let select = Select {
                 expr: namespace,
-                attrpath: vec![Attr::Str(sym, synthetic_span())],
+                attrpath: vec![Attr::Str(sym, rnix::TextRange::default())],
                 default: result, // Link to outer With or None
                 span,
             };
@@ -422,7 +422,7 @@ impl DowngradeContext for DowngradeCtx<'_> {
     fn reserve_slots(&mut self, slots: usize) -> impl Iterator<Item = ExprId> + Clone + use<> {
         let start = self.ctx.irs.len() + self.irs.len();
         let range = (start..start + slots).map(ExprId);
-        let span = synthetic_span();
+        let span = rnix::TextRange::default();
         // Fill reserved slots with placeholder value
         self.irs.extend(
             range
diff --git a/nix-js/src/ir.rs b/nix-js/src/ir.rs
index 4ba0209..ba9e08d 100644
--- a/nix-js/src/ir.rs
+++ b/nix-js/src/ir.rs
@@ -7,13 +7,11 @@ use crate::error::{Result, Source};
 use nix_js_macros::ir;
 
 mod downgrade;
-mod span_utils;
 mod utils;
 
 use utils::*;
 
 pub use downgrade::Downgrade;
-pub(crate) use span_utils::*;
 
 pub trait DowngradeContext {
     fn downgrade(self, expr: rnix::ast::Expr) -> Result<ExprId>;
diff --git a/nix-js/src/ir/downgrade.rs b/nix-js/src/ir/downgrade.rs
index 3d357f7..6301305 100644
--- a/nix-js/src/ir/downgrade.rs
+++ b/nix-js/src/ir/downgrade.rs
@@ -331,8 +331,8 @@ impl<Ctx: DowngradeContext> Downgrade<Ctx> for ast::LegacyLet {
             };
 
             for sym in binding_keys {
-                let expr = ctx.lookup(*sym, synthetic_span())?;
-                attrs.stcs.insert(*sym, (expr, synthetic_span()));
+                let expr = ctx.lookup(*sym, rnix::TextRange::default())?;
+                attrs.stcs.insert(*sym, (expr, rnix::TextRange::default()));
             }
 
             Ok(ctx.new_expr(attrs.to_ir()))
@@ -341,7 +341,7 @@ impl<Ctx: DowngradeContext> Downgrade<Ctx> for ast::LegacyLet {
         let body_sym = ctx.new_sym("body".to_string());
         let select = Select {
             expr: attrset_expr,
-            attrpath: vec![Attr::Str(body_sym, synthetic_span())],
+            attrpath: vec![Attr::Str(body_sym, rnix::TextRange::default())],
             default: None,
             span,
         };
diff --git a/nix-js/src/ir/span_utils.rs b/nix-js/src/ir/span_utils.rs
deleted file mode 100644
index 4442faa..0000000
--- a/nix-js/src/ir/span_utils.rs
+++ /dev/null
@@ -1,18 +0,0 @@
-#![allow(unused)]
-
-use rnix::TextRange;
-
-pub fn merge_spans(spans: impl IntoIterator<Item = TextRange>) -> TextRange {
-    let mut spans = spans.into_iter();
-    let first = spans.next().unwrap_or_else(synthetic_span);
-
-    spans.fold(first, |acc, span| {
-        let start = acc.start().min(span.start());
-        let end = acc.end().max(span.end());
-        TextRange::new(start, end)
-    })
-}
-
-pub fn synthetic_span() -> TextRange {
-    TextRange::new(0.into(), 0.into())
-}
diff --git a/nix-js/src/ir/utils.rs b/nix-js/src/ir/utils.rs
index 938e592..a149e43 100644
--- a/nix-js/src/ir/utils.rs
+++ b/nix-js/src/ir/utils.rs
@@ -553,7 +553,7 @@ where
         .collect();
 
     for &slot in &slots {
-        let span = synthetic_span();
+        let span = rnix::TextRange::default();
         ctx.replace_ir(slot, Thunk { inner: slot, span }.to_ir());
     }
 
@@ -635,8 +635,8 @@ where
         };
 
         for sym in binding_keys {
-            let expr = ctx.lookup(*sym, synthetic_span())?;
-            attrs.stcs.insert(*sym, (expr, synthetic_span()));
+            let expr = ctx.lookup(*sym, rnix::TextRange::default())?;
+            attrs.stcs.insert(*sym, (expr, rnix::TextRange::default()));
         }
 
         Ok(ctx.new_expr(attrs.to_ir()))
@@ -671,7 +671,7 @@ where
         .collect();
 
     for &slot in &slots {
-        let slot_span = synthetic_span();
+        let slot_span = rnix::TextRange::default();
         ctx.replace_ir(
             slot,
             Thunk {