[bug] Maturin's wheel contains two copies of LICENSE when using license-file in workspace crate Cargo.toml

[HerringtonDarkholme]

Bug Description

I'm using carge workspace to publish my project.

The main CLI project uses license-file to include a license file for downstream packager. ast-grep/ast-grep#473

However, this makes maturin includes two copies of LICENSE. ast-grep/ast-grep#766

Your maturin version (maturin --version)

0.15.0

Your Python version (python -V)

3.10

Your pip version (pip -V)

23.3.1

What bindings you're using

bin

Does cargo build work?

• Yes, it works

If on windows, have you checked that you aren't accidentally using unix path (those with the forward slash /)?

• Yes

Steps to Reproduce

1. Crates.toml

[package]
name = "ast-grep"
license-file = "../../LICENSE"

2. pyproject.toml in root directory

[project]
name = "ast-grep-cli"
[tool.maturin]
bindings = "bin"
manifest-path = "crates/cli/Cargo.toml"

3. build

maturin build

4. examine the wheel

unzip -l target/wheels/ast_grep_cli.whl

Example repo:

https://github.com/ast-grep/ast-grep