fix(cargo-package): show dirty filepaths relative to git workdir

Author: weihanglo

src/cargo/ops/cargo_package.rs

@@ -805,7 +805,7 @@ fn check_repo_state(
     return Ok(Some(VcsInfo { git, path_in_vcs }));
 
     fn git(
-        pkg: &Package,
+        _pkg: &Package,
         src_files: &[PathBuf],
         repo: &git2::Repository,
         opts: &PackageOpts<'_>,
@@ -824,11 +824,12 @@ fn check_repo_state(
         // Find the intersection of dirty in git, and the src_files that would
         // be packaged. This is a lazy n^2 check, but seems fine with
         // thousands of files.
+        let workdir = repo.workdir().unwrap();
         let mut dirty_src_files: Vec<_> = src_files
             .iter()
             .filter(|src_file| dirty_files.iter().any(|path| src_file.starts_with(path)))
             .map(|path| {
-                path.strip_prefix(pkg.root())
+                path.strip_prefix(workdir)
                     .unwrap_or(path)
                     .display()
                     .to_string()

tests/testsuite/package.rs

@@ -1217,8 +1217,8 @@ fn dirty_workspace_package() {
 [PACKAGED] 5 files, [FILE_SIZE]B ([FILE_SIZE]B compressed)
 [ERROR] 2 files in the working directory contain changes that were not yet committed into git:
 
-src/lib.rs
-src/main.rs
+mordor/src/lib.rs
+mordor/src/main.rs
 
 to proceed despite this and include the uncommitted changes, pass the `--allow-dirty` flag