feat(resolve): Tell the user the style of resovle done

This is to help with rust-lang#9930

Example changes:
```diff
-[LOCKING] 4 packages
+[LOCKING] 4 packages to latest version
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest Rust 1.60.0 compatible versions
-[LOCKING] 2 packages
+[LOCKING] 2 packages to earliest versions
```

Benefits
- The package count is of "added" packages and this makes that more
  logically clear
- This gives users transparency into what is happening, especially with
  - what rust-version is use
  - the transition to this feature in the new edition
  - whether the planned config was applied or not (as I don't want it to
    require an MSRV bump)
- Will make it easier in tests to show what changed
- Provides more motiviation to show this message in `cargo update` and
  `cargo install` (that will be explored in a follow up PR)

This does come at the cost of more verbose output but hopefully not too
verbose.  This is why I left off other factors, like avoid-dev-deps.

src/cargo/ops/cargo_generate_lockfile.rs

@@ -484,10 +484,36 @@ fn print_lockfile_updates(
 }
 
 fn status_locking(ws: &Workspace<'_>, num_pkgs: usize) -> CargoResult<()> {
+    use std::fmt::Write as _;
+
     let plural = if num_pkgs == 1 { "" } else { "s" };
+
+    let mut cfg = String::new();
+    // Don't have a good way to describe `direct_minimal_versions` atm
+    if !ws.gctx().cli_unstable().direct_minimal_versions {
+        write!(&mut cfg, " to")?;
+        if ws.gctx().cli_unstable().minimal_versions {
+            write!(&mut cfg, " earliest")?;
+        } else {
+            write!(&mut cfg, " latest")?;
+        }
+
+        if ws.resolve_honors_rust_version() {
+            let rust_version = if let Some(ver) = ws.rust_version() {
+                ver.clone().into_partial()
+            } else {
+                let rustc = ws.gctx().load_global_rustc(Some(ws))?;
+                let rustc_version = rustc.version.clone().into();
+                rustc_version
+            };
+            write!(&mut cfg, " Rust {rust_version}")?;
+        }
+        write!(&mut cfg, " compatible version{plural}")?;
+    }
+
     ws.gctx()
         .shell()
-        .status("Locking", format!("{num_pkgs} package{plural}"))?;
+        .status("Locking", format!("{num_pkgs} package{plural}{cfg}"))?;
     Ok(())
 }
 

tests/testsuite/alt_registry.rs

@@ -33,7 +33,7 @@ fn depend_on_alt_registry() {
         .with_stderr(
             "\
 [UPDATING] `alternative` index
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [DOWNLOADING] crates ...
 [DOWNLOADED] bar v0.0.1 (registry `alternative`)
 [CHECKING] bar v0.0.1 (registry `alternative`)
@@ -88,7 +88,7 @@ fn depend_on_alt_registry_depends_on_same_registry_no_index() {
         .with_stderr(
             "\
 [UPDATING] `alternative` index
-[LOCKING] 3 packages
+[LOCKING] 3 packages to latest compatible versions
 [DOWNLOADING] crates ...
 [DOWNLOADED] [..] v0.0.1 (registry `alternative`)
 [DOWNLOADED] [..] v0.0.1 (registry `alternative`)
@@ -132,7 +132,7 @@ fn depend_on_alt_registry_depends_on_same_registry() {
         .with_stderr(
             "\
 [UPDATING] `alternative` index
-[LOCKING] 3 packages
+[LOCKING] 3 packages to latest compatible versions
 [DOWNLOADING] crates ...
 [DOWNLOADED] [..] v0.0.1 (registry `alternative`)
 [DOWNLOADED] [..] v0.0.1 (registry `alternative`)
@@ -177,7 +177,7 @@ fn depend_on_alt_registry_depends_on_crates_io() {
             "\
 [UPDATING] `alternative` index
 [UPDATING] `dummy-registry` index
-[LOCKING] 3 packages
+[LOCKING] 3 packages to latest compatible versions
 [DOWNLOADING] crates ...
 [DOWNLOADED] baz v0.0.1 (registry `dummy-registry`)
 [DOWNLOADED] bar v0.0.1 (registry `alternative`)
@@ -217,7 +217,7 @@ fn registry_and_path_dep_works() {
     p.cargo("check")
         .with_stderr(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [CHECKING] bar v0.0.1 ([CWD]/bar)
 [CHECKING] foo v0.0.1 ([CWD])
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]s
@@ -421,7 +421,7 @@ fn alt_registry_and_crates_io_deps() {
             "\
 [UPDATING] `alternative` index
 [UPDATING] `dummy-registry` index
-[LOCKING] 3 packages
+[LOCKING] 3 packages to latest compatible versions
 [DOWNLOADING] crates ...
 [DOWNLOADED] crates_io_dep v0.0.1 (registry `dummy-registry`)
 [DOWNLOADED] alt_reg_dep v0.1.0 (registry `alternative`)
@@ -698,7 +698,7 @@ fn patch_alt_reg() {
         .with_stderr(
             "\
 [UPDATING] `alternative` index
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [CHECKING] bar v0.1.0 ([CWD]/bar)
 [CHECKING] foo v0.0.1 ([CWD])
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
@@ -791,7 +791,7 @@ fn no_api() {
         .with_stderr(
             "\
 [UPDATING] `alternative` index
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [DOWNLOADING] crates ...
 [DOWNLOADED] bar v0.0.1 (registry `alternative`)
 [CHECKING] bar v0.0.1 (registry `alternative`)
@@ -1354,7 +1354,7 @@ fn registries_index_relative_url() {
         .with_stderr(
             "\
 [UPDATING] `relative` index
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [DOWNLOADING] crates ...
 [DOWNLOADED] bar v0.0.1 (registry `relative`)
 [CHECKING] bar v0.0.1 (registry `relative`)

tests/testsuite/artifact_dep.rs

@@ -213,7 +213,7 @@ fn disallow_artifact_and_no_artifact_dep_to_same_package_within_the_same_dep_cat
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_status(101)
         .with_stderr("\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [WARNING] foo v0.0.0 ([CWD]) ignoring invalid dependency `bar_stable` which is missing a lib target
 [ERROR] the crate `foo v0.0.0 ([CWD])` depends on crate `bar v0.5.0 ([CWD]/bar)` multiple times with different names",
         )
@@ -323,7 +323,7 @@ fn features_are_unified_among_lib_and_bin_dep_of_same_target() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(
             "\
-[LOCKING] 3 packages
+[LOCKING] 3 packages to latest compatible versions
 [COMPILING] d2 v0.0.1 ([CWD]/d2)
 [COMPILING] d1 v0.0.1 ([CWD]/d1)
 [COMPILING] foo v0.0.1 ([CWD])
@@ -775,7 +775,7 @@ fn build_script_with_selected_dashed_bin_artifact_and_lib_true() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [COMPILING] bar-baz v0.5.0 ([CWD]/bar)
 [COMPILING] foo [..]
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]",
@@ -877,7 +877,7 @@ fn lib_with_selected_dashed_bin_artifact_and_lib_true() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [COMPILING] bar-baz v0.5.0 ([CWD]/bar)
 [COMPILING] foo [..]
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]",
@@ -998,7 +998,7 @@ fn disallow_using_example_binaries_as_artifacts() {
         .with_status(101)
         .with_stderr(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [ERROR] dependency `bar` in package `foo` requires a `bin:one-example` artifact to be present.",
         )
         .run();
@@ -1169,7 +1169,7 @@ fn build_script_deps_adopt_do_not_allow_multiple_targets_under_different_name_an
         .with_status(101)
         .with_stderr(format!(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 error: the crate `foo v0.0.0 ([CWD])` depends on crate `bar v0.5.0 ([CWD]/bar)` multiple times with different names",
         ))
         .run();
@@ -1274,7 +1274,7 @@ fn no_cross_doctests_works_with_artifacts() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(&format!(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [COMPILING] bar v0.5.0 ([CWD]/bar)
 [COMPILING] foo v0.0.1 ([CWD])
 [FINISHED] `test` profile [unoptimized + debuginfo] target(s) in [..]
@@ -1757,7 +1757,7 @@ fn allow_artifact_and_non_artifact_dependency_to_same_crate_if_these_are_not_the
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [COMPILING] bar [..]
 [COMPILING] foo [..]
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
@@ -1794,7 +1794,7 @@ fn prevent_no_lib_warning_with_artifact_dependencies() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(
             "\
-            [LOCKING] 2 packages\n\
+            [LOCKING] 2 packages to latest compatible versions\n\
             [COMPILING] bar v0.5.0 ([CWD]/bar)\n\
             [CHECKING] foo v0.0.0 ([CWD])\n\
             [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]",
@@ -1895,7 +1895,7 @@ fn check_missing_crate_type_in_package_fails() {
             .with_status(101)
             .with_stderr(
                 "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [ERROR] dependency `bar` in package `foo` requires a `[..]` artifact to be present.",
             )
             .run();
@@ -2042,7 +2042,7 @@ fn env_vars_and_build_products_for_various_build_targets() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [COMPILING] bar [..]
 [COMPILING] foo [..]
 [FINISHED] `test` profile [unoptimized + debuginfo] target(s) in [..]
@@ -2219,7 +2219,7 @@ fn doc_lib_true() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [COMPILING] bar v0.0.1 ([CWD]/bar)
 [DOCUMENTING] bar v0.0.1 ([CWD]/bar)
 [DOCUMENTING] foo v0.0.1 ([CWD])
@@ -2302,7 +2302,7 @@ fn rustdoc_works_on_libs_with_artifacts_and_lib_false() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [COMPILING] bar v0.5.0 ([CWD]/bar)
 [DOCUMENTING] foo v0.0.1 ([CWD])
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
@@ -2510,7 +2510,7 @@ fn calc_bin_artifact_fingerprint() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [COMPILING] bar v0.5.0 ([CWD]/bar)
 [CHECKING] foo v0.1.0 ([CWD])
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]
@@ -2592,7 +2592,7 @@ fn with_target_and_optional() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [COMPILING] d1 v0.0.1 [..]
 [RUNNING] `rustc --crate-name d1 [..]--crate-type bin[..]
 [CHECKING] foo v0.0.1 [..]
@@ -2642,7 +2642,7 @@ fn with_assumed_host_target_and_optional_build_dep() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr_unordered(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [COMPILING] foo v0.0.1 ([CWD])
 [COMPILING] d1 v0.0.1 ([CWD]/d1)
 [RUNNING] `rustc --crate-name build_script_build --edition=2021 [..]--crate-type bin[..]
@@ -2770,7 +2770,7 @@ fn decouple_same_target_transitive_dep_from_artifact_dep() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(
             "\
-[LOCKING] 5 packages
+[LOCKING] 5 packages to latest compatible versions
 [COMPILING] c v0.1.0 ([CWD]/c)
 [COMPILING] b v0.1.0 ([CWD]/b)
 [COMPILING] a v0.1.0 ([CWD]/a)
@@ -2874,7 +2874,7 @@ fn decouple_same_target_transitive_dep_from_artifact_dep_lib() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(
             "\
-[LOCKING] 4 packages
+[LOCKING] 4 packages to latest compatible versions
 [COMPILING] b v0.1.0 ([CWD]/b)
 [COMPILING] a v0.1.0 ([CWD]/a)
 [COMPILING] bar v0.1.0 ([CWD]/bar)
@@ -3001,7 +3001,7 @@ fn decouple_same_target_transitive_dep_from_artifact_dep_and_proc_macro() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr_unordered(
             "\
-[LOCKING] 6 packages
+[LOCKING] 6 packages to latest compatible versions
 [COMPILING] d v0.1.0 ([CWD]/d)
 [COMPILING] a v0.1.0 ([CWD]/a)
 [COMPILING] b v0.1.0 ([CWD]/b)
@@ -3067,7 +3067,7 @@ fn same_target_artifact_dep_sharing() {
         .masquerade_as_nightly_cargo(&["bindeps"])
         .with_stderr(
             "\
-[LOCKING] 3 packages
+[LOCKING] 3 packages to latest compatible versions
 [COMPILING] a v0.1.0 ([CWD]/a)
 [COMPILING] bar v0.1.0 ([CWD]/bar)
 [COMPILING] foo v0.1.0 ([CWD])

tests/testsuite/bench.rs

@@ -438,7 +438,7 @@ fn bench_with_deep_lib_dep() {
     p.cargo("bench")
         .with_stderr(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [COMPILING] foo v0.0.1 ([..])
 [COMPILING] bar v0.0.1 ([CWD])
 [FINISHED] `bench` profile [optimized] target(s) in [..]
@@ -904,7 +904,7 @@ fn bench_dylib() {
     p.cargo("bench -v")
         .with_stderr(
             "\
-[LOCKING] 2 packages
+[LOCKING] 2 packages to latest compatible versions
 [COMPILING] bar v0.0.1 ([CWD]/bar)
 [RUNNING] [..] -C opt-level=3 [..]
 [COMPILING] foo v0.0.1 ([CWD])