feat: prototype additional hash

.github/workflows/ci.yml

@@ -301,7 +301,7 @@ jobs:
 
   build-binary-windows-aarch64:
     needs: determine_changes
-    if: ${{ needs.determine_changes.outputs.code == 'true' || github.ref == 'refs/heads/main' }}
+    if: ${{ needs.determine_changes.outputs.code == 'true' && github.ref == 'refs/heads/main' }} # Only run on the main branch
     runs-on: 16core_windows_latest_runner
     name: "build binary | windows aarch64"
     steps:

crates/pixi_build_frontend/src/protocols/builders/conda_build/protocol.rs

@@ -107,6 +107,7 @@ impl Protocol {
                 })
                 .collect::<miette::Result<_>>()?,
             input_globs: None,
+            additional_hash: None,
         };
 
         Ok(metadata)

crates/pixi_build_types/src/procedures/conda_metadata.rs

@@ -52,4 +52,10 @@ pub struct CondaMetadataResult {
     /// If this field is not present, the input manifest will be used.
     #[serde(default)]
     pub input_globs: Option<Vec<String>>,
+
+    /// Additional information that will be added to the hash of the lock-file.
+    /// This can be extra information (like a JSON string), or an arbitrary hash
+    /// that the backend produces in order to break the cache when needed.
+    #[serde(default)]
+    pub additional_hash: Option<String>,
 }

crates/pixi_record/src/source_record.rs

@@ -34,6 +34,8 @@ pub struct InputHash {
     )]
     pub hash: Sha256Hash,
     pub globs: Vec<String>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub extra_data: Option<String>
 }
 
 impl From<SourceRecord> for CondaPackageData {
@@ -59,6 +61,8 @@ impl TryFrom<CondaSourceData> for SourceRecord {
             input_hash: value.input.map(|hash| InputHash {
                 hash: hash.hash,
                 globs: hash.globs,
+                // TODO?
+                extra_data: None,
             }),
         })
     }

src/build/mod.rs

@@ -687,9 +687,20 @@ impl BuildContext {
                     globs: input_globs.clone(),
                 })
                 .await?;
+
+            // Add in extra data to the glob hash
+            if let Some(extra_data) = &metadata.additional_hash {
+                // let mut hasher = Xxh3::with_seed(0);
+                // input_hash.hash(&mut hasher);
+                // extra_data.hash(&mut hasher);
+                print!("extra_data: {}", extra_data);
+                // input_hash = hasher.finish();
+            };
+
             Some(InputHash {
                 hash: input_hash.hash,
                 globs: input_globs,
+                extra_data: metadata.additional_hash,
             })
         };