cargo vendor loses some nonempty directories #15080
Description
Problem
For example, this one: https://docs.rs/crate/bat/0.25.0/source/src/syntax_mapping/builtins/macos/
Steps
Confirm this directory exists in the published crate, as shown in the docs.rs link above.
$ curl -L https://crates.io/api/v1/crates/bat/0.25.0/download -o bat-0.25.0.crate
$ tar tf bat-0.25.0.crate bat-0.25.0/src/syntax_mapping/builtins/macos
bat-0.25.0/src/syntax_mapping/builtins/macos/.gitkeepNow let's try vendoring.
# Cargo.toml
[package]
name = "repro-cargo"
edition = "2021"
[dependencies]
bat = "=0.25.0"$ cargo vendor
$ ls vendor/bat/src/syntax_mapping/builtins/
bsd-family common linux README.md unix-family"macos" is not there.
In bat-0.25.0's case, this actually breaks the crate (when built on macos from vendored sources).
error: failed to run custom build command for `bat v0.25.0`
Caused by:
process didn't exit successfully: `target/debug/build/bat-126fec914d2804b6/build-script-main` (exit status: 1)
--- stdout
cargo:rerun-if-changed=build/
cargo:rerun-if-changed=src/syntax_mapping/builtins/
--- stderr
Error: IO error for operation on src/syntax_mapping/builtins/macos: No such file or directory (os error 2)
Caused by:
No such file or directory (os error 2)Possible Solution(s)
No response
Notes
No response
Version
cargo 1.86.0-nightly (088d49608 2025-01-10)
release: 1.86.0-nightly
commit-hash: 088d496082726091024f1689c124a0c3dccbd775
commit-date: 2025-01-10
host: x86_64-unknown-linux-gnu
libgit2: 1.9.0 (sys:0.20.0 vendored)
libcurl: 8.9.0-DEV (sys:0.4.74+curl-8.9.0 vendored ssl:OpenSSL/1.1.1w)
ssl: OpenSSL 1.1.1w 11 Sep 2023
os: Ubuntu 24.4.0 (noble) [64-bit]