feat(fix): Report manifest migrations

src/cargo/ops/fix.rs

@@ -53,7 +53,8 @@ use tracing::{debug, trace, warn};
 use crate::core::compiler::RustcTargetData;
 use crate::core::resolver::features::{DiffMap, FeatureOpts, FeatureResolver, FeaturesFor};
 use crate::core::resolver::{HasDevUnits, Resolve, ResolveBehavior};
-use crate::core::{Edition, MaybePackage, PackageId, Workspace};
+use crate::core::PackageIdSpecQuery as _;
+use crate::core::{Edition, MaybePackage, Package, PackageId, Workspace};
 use crate::ops::resolve::WorkspaceResolve;
 use crate::ops::{self, CompileOptions};
 use crate::util::diagnostic_server::{Message, RustfixDiagnosticServer};
@@ -96,6 +97,13 @@ pub fn fix(
     check_version_control(gctx, opts)?;
 
     if opts.edition {
+        let specs = opts.compile_opts.spec.to_package_id_specs(&original_ws)?;
+        let members: Vec<&Package> = original_ws
+            .members()
+            .filter(|m| specs.iter().any(|spec| spec.matches(m.package_id())))
+            .collect();
+        migrate_manifests(original_ws, &members)?;
+
         check_resolver_change(&original_ws, opts)?;
     }
     let mut ws = Workspace::new(&root_manifest, gctx)?;
@@ -223,6 +231,27 @@ fn check_version_control(gctx: &GlobalContext, opts: &FixOptions) -> CargoResult
     );
 }
 
+fn migrate_manifests(ws: &Workspace<'_>, pkgs: &[&Package]) -> CargoResult<()> {
+    for pkg in pkgs {
+        let existing_edition = pkg.manifest().edition();
+        let prepare_for_edition = existing_edition.saturating_next();
+        if existing_edition == prepare_for_edition
+            || (!prepare_for_edition.is_stable() && !ws.gctx().nightly_features_allowed)
+        {
+            continue;
+        }
+        let file = pkg.manifest_path();
+        let file = file.strip_prefix(ws.root()).unwrap_or(file);
+        let file = file.display();
+        ws.gctx().shell().status(
+            "Migrating",
+            format!("{file} from {existing_edition} edition to {prepare_for_edition}"),
+        )?;
+    }
+
+    Ok(())
+}
+
 fn check_resolver_change(ws: &Workspace<'_>, opts: &FixOptions) -> CargoResult<()> {
     let root = ws.root_maybe();
     match root {

tests/testsuite/fix.rs

@@ -172,6 +172,7 @@ fn prepare_for_2018() {
         .build();
 
     let stderr = "\
+[MIGRATING] Cargo.toml from 2015 edition to 2018
 [CHECKING] foo v0.0.1 ([..])
 [MIGRATING] src/lib.rs from 2015 edition to 2018
 [FIXED] src/lib.rs (2 fixes)
@@ -211,6 +212,7 @@ fn local_paths() {
     p.cargo("fix --edition --allow-no-vcs")
         .with_stderr(
             "\
+[MIGRATING] Cargo.toml from 2015 edition to 2018
 [CHECKING] foo v0.0.1 ([..])
 [MIGRATING] src/lib.rs from 2015 edition to 2018
 [FIXED] src/lib.rs (1 fix)
@@ -298,6 +300,7 @@ fn specify_rustflags() {
         .env("RUSTFLAGS", "-C linker=cc")
         .with_stderr(
             "\
+[MIGRATING] Cargo.toml from 2015 edition to 2018
 [CHECKING] foo v0.0.1 ([..])
 [MIGRATING] src/lib.rs from 2015 edition to 2018
 [FIXED] src/lib.rs (1 fix)
@@ -770,6 +773,7 @@ https://doc.rust-lang.org/edition-guide/editions/transitioning-an-existing-proje
         .masquerade_as_nightly_cargo(&["always_nightly"])
         .with_stderr(&format!(
             "\
+[MIGRATING] Cargo.toml from {latest_stable} edition to {next}
 [CHECKING] foo [..]
 [MIGRATING] src/lib.rs from {latest_stable} edition to {next}
 [FINISHED] [..]
@@ -804,11 +808,11 @@ fn prepare_for_latest_stable() {
     p.cargo("fix --edition --allow-no-vcs")
         .with_stderr(&format!(
             "\
+[MIGRATING] Cargo.toml from {previous} edition to {latest_stable}
 [CHECKING] foo [..]
-[MIGRATING] src/lib.rs from {} edition to {}
+[MIGRATING] src/lib.rs from {previous} edition to {latest_stable}
 [FINISHED] [..]
 ",
-            previous, latest_stable
         ))
         .run();
 }
@@ -911,6 +915,7 @@ fn fix_overlapping() {
     p.cargo("fix --allow-no-vcs --edition --lib")
         .with_stderr(
             "\
+[MIGRATING] Cargo.toml from 2015 edition to 2018
 [CHECKING] foo [..]
 [MIGRATING] src/lib.rs from 2015 edition to 2018
 [FIXED] src/lib.rs (2 fixes)
@@ -1202,6 +1207,7 @@ fn only_warn_for_relevant_crates() {
     p.cargo("fix --allow-no-vcs --edition")
         .with_stderr(
             "\
+[MIGRATING] Cargo.toml from 2015 edition to 2018
 [LOCKING] 2 packages to latest compatible versions
 [CHECKING] a v0.1.0 ([..])
 [CHECKING] foo v0.1.0 ([..])
@@ -1398,6 +1404,7 @@ fn edition_v2_resolver_report() {
 
     p.cargo("fix --edition --allow-no-vcs")
         .with_stderr_unordered("\
+[MIGRATING] Cargo.toml from 2018 edition to 2021
 [UPDATING] [..]
 [LOCKING] 4 packages to latest compatible versions
 [DOWNLOADING] crates ...
@@ -1477,6 +1484,7 @@ fn fix_edition_2021() {
     p.cargo("fix --edition --allow-no-vcs")
         .with_stderr(
             "\
+[MIGRATING] Cargo.toml from 2018 edition to 2021
 [CHECKING] foo v0.1.0 [..]
 [MIGRATING] src/lib.rs from 2018 edition to 2021
 [FIXED] src/lib.rs (1 fix)
@@ -1966,6 +1974,7 @@ edition = "2021"
         .masquerade_as_nightly_cargo(&["edition2024"])
         .with_stderr(
             "\
+[MIGRATING] Cargo.toml from 2021 edition to 2024
 [WARNING] `[project]` is deprecated in favor of `[package]`
 [CHECKING] foo v0.0.0 ([CWD])
 [MIGRATING] src/lib.rs from 2021 edition to 2024
@@ -2018,6 +2027,7 @@ edition = "2021"
         .masquerade_as_nightly_cargo(&["edition2024"])
         .with_stderr(
             "\
+[MIGRATING] Cargo.toml from 2021 edition to 2024
 [WARNING] `[project]` is deprecated in favor of `[package]`
 [CHECKING] foo v0.0.0 ([CWD])
 [MIGRATING] src/lib.rs from 2021 edition to 2024