helper to check if precise is the same

Author: Eh2406

src/cargo/core/registry.rs

@@ -170,7 +170,7 @@ impl<'cfg> PackageRegistry<'cfg> {
             // then we're done, otherwise we need to need to move forward
             // updating this source.
             Some((previous, _)) => {
-                if previous.precise() == namespace.precise() {
+                if previous.has_same_precise_as(namespace) {
                     debug!("load/match    {}", namespace);
                     return Ok(());
                 }

src/cargo/core/source_id.rs

@@ -459,6 +459,11 @@ impl SourceId {
         self.inner.precise.as_deref() == Some("locked")
     }
 
+    /// Check if two sources have the same precise data field
+    pub fn has_same_precise_as(self, other: Self) -> bool {
+        self.inner.precise == other.inner.precise
+    }
+
     /// Check if the precise data field stores information for this `name`
     /// from a call to [SourceId::with_precise_registry_version].
     ///

src/cargo/ops/cargo_generate_lockfile.rs

@@ -230,7 +230,7 @@ pub fn update_lockfile(ws: &Workspace<'_>, opts: &UpdateOptions<'_>) -> CargoRes
                     b[i..]
                         .iter()
                         .take_while(|b| a == b)
-                        .all(|b| a.source_id().precise() != b.source_id().precise())
+                        .all(|b| !a.source_id().has_same_precise_as(b.source_id()))
                 })
                 .cloned()
                 .collect()

src/cargo/ops/common_for_install_and_uninstall.rs

@@ -215,7 +215,7 @@ impl InstallTracker {
                 let precise_equal = if source_id.is_git() {
                     // Git sources must have the exact same hash to be
                     // considered "fresh".
-                    dupe_pkg_id.source_id().precise() == source_id.precise()
+                    dupe_pkg_id.source_id().has_same_precise_as(source_id)
                 } else {
                     true
                 };