fix(add): Update the lock file

This is done in the command, rather than in the op,
- To consistently construct the `Workspace`
- It is more composable as an API

A downside is we update the git dependencies a second time.

We are not rolling back on error.
- For some errors, the user might want to debug what went wrong
- Rollback adds its own complications and risks, including since its
  non-atomic

Fixes #10901

Author: epage

src/bin/cargo/commands/add.rs

@@ -7,6 +7,7 @@ use cargo::ops::cargo_add::add;
 use cargo::ops::cargo_add::AddOptions;
 use cargo::ops::cargo_add::DepOp;
 use cargo::ops::cargo_add::DepTable;
+use cargo::ops::resolve_ws;
 use cargo::util::command_prelude::*;
 use cargo::util::interning::InternedString;
 use cargo::CargoResult;
@@ -193,6 +194,12 @@ pub fn exec(config: &mut Config, args: &ArgMatches) -> CliResult {
     };
     add(&ws, &options)?;
 
+    if !dry_run {
+        // Reload the workspace since we've changed dependencies
+        let ws = args.workspace(config)?;
+        resolve_ws(&ws)?;
+    }
+
     Ok(())
 }
 

tests/testsuite/cargo_add/git/stderr.log

@@ -1,2 +1,3 @@
     Updating git repository `[ROOTURL]/git-package`
       Adding git-package (git) to dependencies.
+    Updating git repository `[ROOTURL]/git-package`

tests/testsuite/cargo_add/git_branch/stderr.log

@@ -1,2 +1,3 @@
     Updating git repository `[ROOTURL]/git-package`
       Adding git-package (git) to dependencies.
+    Updating git repository `[ROOTURL]/git-package`

tests/testsuite/cargo_add/git_dev/stderr.log

@@ -1,2 +1,3 @@
     Updating git repository `[ROOTURL]/git-package`
       Adding git-package (git) to dev-dependencies.
+    Updating git repository `[ROOTURL]/git-package`

tests/testsuite/cargo_add/git_inferred_name/stderr.log

@@ -1,3 +1,4 @@
     Updating git repository `[ROOTURL]/git-package`
     Updating git repository `[ROOTURL]/git-package`
       Adding git-package (git) to dependencies.
+    Updating git repository `[ROOTURL]/git-package`

tests/testsuite/cargo_add/git_multiple_names/stderr.log

@@ -1,3 +1,4 @@
     Updating git repository `[ROOTURL]/git-package`
       Adding my-package1 (git) to dependencies.
       Adding my-package2 (git) to dependencies.
+    Updating git repository `[ROOTURL]/git-package`

tests/testsuite/cargo_add/git_registry/mod.rs

@@ -32,7 +32,7 @@ fn git_registry() {
         ])
         .current_dir(cwd)
         .assert()
-        .success()
+        .failure()
         .stdout_matches_path(curr_dir!().join("stdout.log"))
         .stderr_matches_path(curr_dir!().join("stderr.log"));
 

tests/testsuite/cargo_add/git_registry/stderr.log

@@ -1,2 +1,6 @@
     Updating git repository `[ROOTURL]/versioned-package`
       Adding versioned-package (git) to dependencies.
+error: failed to parse manifest at `[ROOT]/case/Cargo.toml`
+
+Caused by:
+  dependency (versioned-package) specification is ambiguous. Only one of `git` or `registry` is allowed.

tests/testsuite/cargo_add/git_rev/stderr.log

@@ -1,2 +1,3 @@
     Updating git repository `[ROOTURL]/git-package`
       Adding git-package (git) to dependencies.
+    Updating git repository `[ROOTURL]/git-package`

tests/testsuite/cargo_add/git_tag/stderr.log

@@ -1,2 +1,3 @@
     Updating git repository `[ROOTURL]/git-package`
       Adding git-package (git) to dependencies.
+    Updating git repository `[ROOTURL]/git-package`

tests/testsuite/cargo_add/list_features_path/stderr.log

@@ -4,3 +4,4 @@
              + nose
              - eyes
              - optional-dependency
+    Updating `dummy-registry` index

tests/testsuite/cargo_add/list_features_path_no_default/stderr.log

@@ -4,3 +4,4 @@
              - mouth
              - nose
              - optional-dependency
+    Updating `dummy-registry` index

tests/testsuite/cargo_add/locked_unchanged/in/Cargo.lock

@@ -0,0 +1,8 @@
+[workspace]
+
+[package]
+name = "cargo-list-test-fixture"
+version = "0.0.0"
+
+[dependencies]
+unrelateed-crate = "0.2.0"

tests/testsuite/cargo_add/lockfile_updated/in/Cargo.lock

@@ -0,0 +1,25 @@
+use cargo_test_support::compare::assert_ui;
+use cargo_test_support::prelude::*;
+use cargo_test_support::Project;
+
+use crate::cargo_add::init_registry;
+use cargo_test_support::curr_dir;
+
+#[cargo_test]
+fn lockfile_updated() {
+    init_registry();
+    let project = Project::from_template(curr_dir!().join("in"));
+    let project_root = project.root();
+    let cwd = &project_root;
+
+    snapbox::cmd::Command::cargo_ui()
+        .arg("add")
+        .arg_line("my-package")
+        .current_dir(cwd)
+        .assert()
+        .success()
+        .stdout_matches_path(curr_dir!().join("stdout.log"))
+        .stderr_matches_path(curr_dir!().join("stderr.log"));
+
+    assert_ui().subset_matches(curr_dir!().join("out"), &project_root);
+}

tests/testsuite/cargo_add/lockfile_updated/in/Cargo.toml

@@ -0,0 +1,9 @@
+[workspace]
+
+[package]
+name = "cargo-list-test-fixture"
+version = "0.0.0"
+
+[dependencies]
+my-package = "99999.0.0"
+unrelateed-crate = "0.2.0"

tests/testsuite/cargo_add/lockfile_updated/in/src/lib.rs

@@ -0,0 +1,2 @@
+    Updating `dummy-registry` index
+      Adding my-package v99999.0.0 to dependencies.

tests/testsuite/cargo_add/lockfile_updated/mod.rs

@@ -50,6 +50,7 @@ mod list_features_path;
 mod list_features_path_no_default;
 mod locked_changed;
 mod locked_unchanged;
+mod lockfile_updated;
 mod manifest_path_package;
 mod merge_activated_features;
 mod multiple_conflicts_with_features;
@@ -133,6 +134,9 @@ fn add_registry_packages(alt: bool) {
         cargo_test_support::registry::Package::new(name, "0.1.1+my-package")
             .alternative(alt)
             .publish();
+        cargo_test_support::registry::Package::new(name, "0.2.0+my-package")
+            .alternative(alt)
+            .publish();
         cargo_test_support::registry::Package::new(name, "0.2.3+my-package")
             .alternative(alt)
             .publish();

tests/testsuite/cargo_add/lockfile_updated/out/Cargo.lock

@@ -1,2 +1,3 @@
     Updating git repository `[ROOTURL]/versioned-package`
       Adding versioned-package (git) to optional dependencies.
+    Updating git repository `[ROOTURL]/versioned-package`