fix: update --breaking now understands package@version.

Author: torhovland

src/cargo/ops/cargo_update.rs

@@ -222,6 +222,11 @@ pub fn upgrade_manifests(
     let mut upgrades = HashMap::new();
     let mut upgrade_messages = HashSet::new();
 
+    let to_update = to_update
+        .iter()
+        .map(|s| PackageIdSpec::parse(s))
+        .collect::<Result<Vec<_>, _>>()?;
+
     // Updates often require a lot of modifications to the registry, so ensure
     // that we're synchronized against other Cargos.
     let _lock = gctx.acquire_package_cache_lock(CacheLockMode::DownloadExclusive)?;
@@ -239,7 +244,7 @@ pub fn upgrade_manifests(
             .try_map_dependencies(|d| {
                 upgrade_dependency(
                     &gctx,
-                    to_update,
+                    &to_update,
                     &mut registry,
                     &mut upgrades,
                     &mut upgrade_messages,
@@ -253,7 +258,7 @@ pub fn upgrade_manifests(
 
 fn upgrade_dependency(
     gctx: &GlobalContext,
-    to_update: &Vec<String>,
+    to_update: &Vec<PackageIdSpec>,
     registry: &mut PackageRegistry<'_>,
     upgrades: &mut UpgradeMap,
     upgrade_messages: &mut HashSet<String>,
@@ -271,7 +276,14 @@ fn upgrade_dependency(
         return Ok(dependency);
     }
 
-    if !to_update.is_empty() && !to_update.contains(&name.to_string()) {
+    if !to_update.is_empty()
+        && !to_update.iter().any(|spec| {
+            spec.name() == name.as_str()
+                && spec
+                    .version()
+                    .map_or(true, |v| dependency.version_req().matches(&v))
+        })
+    {
         trace!("skipping dependency `{}` not selected for upgrading", name);
         return Ok(dependency);
     }

tests/testsuite/update.rs

@@ -2244,11 +2244,29 @@ fn update_breaking_spec_version() {
 
     Package::new("incompatible", "2.0.0").publish();
 
+    p.cargo("update -Zunstable-options --breaking incompatible@foo")
+        .masquerade_as_nightly_cargo(&["update-breaking"])
+        .with_status(101)
+        .with_stderr(
+            "\
+[ERROR] expected a version like \"1.32\"
+",
+        )
+        .run();
+
+    p.cargo("update -Zunstable-options --breaking [email protected]")
+        .masquerade_as_nightly_cargo(&["update-breaking"])
+        .with_stderr("")
+        .run();
+
     p.cargo("update -Zunstable-options --breaking [email protected]")
         .masquerade_as_nightly_cargo(&["update-breaking"])
         .with_stderr(
-            // FIXME: This is wrong.
             "\
+[UPDATING] `[..]` index
+[UPGRADING] incompatible ^1.0 -> ^2.0
+[LOCKING] 1 package to latest compatible version
+[UPDATING] incompatible v1.0.0 -> v2.0.0
 ",
         )
         .run();
@@ -2259,7 +2277,6 @@ fn update_breaking_spec_version() {
 [UPDATING] `[..]` index
 [LOCKING] 1 package to latest compatible version
 [UPDATING] compatible v1.0.0 -> v1.0.1
-[NOTE] pass `--verbose` to see 1 unchanged dependencies behind latest
 ",
         )
         .run();