fix(tvix/cli): keep tracking full paths in known_paths r/5827

We need to distinguish explicitly between the paths used for the
scanner, and the paths that populate the derivation inputs. The full
paths must be accessible from the result of the refscanner to populate
drv fields correctly.

This was previously hidden by debug changes that masked actual IO
operations with no-ops.

Change-Id: I037af6e6bbe2b573034d695f8779bee1b56bc125
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8022
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI

1 files changed, 18 insertions, 10 deletions

diff --git a/tvix/cli/src/derivation.rs b/tvix/cli/src/derivation.rs
index 6af3d24a2487..88c5e522966d 100644
--- a/tvix/cli/src/derivation.rs
+++ b/tvix/cli/src/derivation.rs
@@ -8,7 +8,7 @@ use tvix_eval::builtin_macros::builtins;
 use tvix_eval::{AddContext, CoercionKind, ErrorKind, NixAttrs, NixList, Value, VM};
 
 use crate::errors::Error;
-use crate::known_paths::{KnownPaths, PathType};
+use crate::known_paths::{KnownPaths, PathKind, PathName};
 
 // Constants used for strangely named fields in derivation inputs.
 const STRUCTURED_ATTRS: &str = "__structuredAttrs";
@@ -41,18 +41,19 @@ fn populate_outputs(vm: &mut VM, drv: &mut Derivation, outputs: NixList) -> Resu
 
 /// Populate the inputs of a derivation from the build references
 /// found when scanning the derivation's parameters.
-fn populate_inputs<I: IntoIterator<Item = String>>(
+fn populate_inputs<I: IntoIterator<Item = PathName>>(
     drv: &mut Derivation,
     known_paths: &KnownPaths,
     references: I,
 ) {
     for reference in references.into_iter() {
-        match &known_paths[&reference] {
-            PathType::Plain => {
-                drv.input_sources.insert(reference.to_string());
+        let reference = &known_paths[&reference];
+        match &reference.kind {
+            PathKind::Plain => {
+                drv.input_sources.insert(reference.path.clone());
             }
 
-            PathType::Output { name, derivation } => {
+            PathKind::Output { name, derivation } => {
                 match drv.input_derivations.entry(derivation.clone()) {
                     btree_map::Entry::Vacant(entry) => {
                         entry.insert(BTreeSet::from([name.clone()]));
@@ -64,8 +65,8 @@ fn populate_inputs<I: IntoIterator<Item = String>>(
                 }
             }
 
-            PathType::Derivation { output_names } => {
-                match drv.input_derivations.entry(reference.to_string()) {
+            PathKind::Derivation { output_names } => {
+                match drv.input_derivations.entry(reference.path.clone()) {
                     btree_map::Entry::Vacant(entry) => {
                         entry.insert(output_names.clone());
                     }
@@ -389,7 +390,14 @@ mod derivation_builtins {
 
         let mut refscan = state.borrow().reference_scanner();
         refscan.scan_str(content.as_str());
-        let refs = refscan.finalise();
+        let refs = {
+            let paths = state.borrow();
+            refscan
+                .finalise()
+                .into_iter()
+                .map(|path| paths[&path].path.to_string())
+                .collect::<Vec<_>>()
+        };
 
         // TODO: fail on derivation references (only "plain" is allowed here)
 
@@ -491,7 +499,7 @@ mod tests {
             "/nix/store/aqffiyqx602lbam7n1zsaz3yrh6v08pc-bar.drv",
         );
 
-        let inputs: Vec<String> = vec![
+        let inputs = vec![
             "/nix/store/fn7zvafq26f0c8b17brs7s95s10ibfzs-foo".into(),
             "/nix/store/aqffiyqx602lbam7n1zsaz3yrh6v08pc-bar.drv".into(),
             "/nix/store/zvpskvjwi72fjxg0vzq822sfvq20mq4l-bar".into(),