New issue by harrisonthorne on void-packages repository

https://github.com/void-linux/void-packages/issues/26474

Description:
I'm still learning how to make Void packages. It's been a super pleasant experience, though.

I'm making a package for `tree-sitter`, which seems to be a dependency of Neovim's upcoming 0.5 release.

template:

```
# Template file for 'tree-sitter'
pkgname=tree-sitter
version=0.17.3
revision=1
build_style=gnu-makefile
short_desc="Parser generator tool and incremental parsing library"
maintainer="Harrison Thorne <harrisonthorne@protonmail.com>"
license="MIT"
homepage="https://tree-sitter.github.io"
distfiles="https://github.com/tree-sitter/${pkgname}/archive/${version}.tar.gz"
checksum=a897e5c9a7ccb74271d9b20d59121d2d2e9de8b896c4d1cfaac0f8104c1ef9f8

tree-sitter-devel_package() {
	short_desc+=" - development files"
	depends="${sourcepkg}>=${version}_${revision}"
	pkg_install() {
		vmove usr/include
		vmove "usr/lib/*.a"
		vmove "usr/lib/*.so"
		vmove usr/lib/pkgconfig
	}
}
```

Then, when I add `tree-sitter-devel` to `neovim`'s `makedepends`, I get this with `xbps-src pkg neovim`:

```
ERROR: tree-sitter-devel-0.17.3_1: file `/usr/include/tree_sitter/api.h' already installed by package tree-sitter-0.17.3_1.
ERROR: tree-sitter-devel-0.17.3_1: file `/usr/include/tree_sitter/parser.h' already installed by package tree-sitter-0.17.3_1.
ERROR: tree-sitter-devel-0.17.3_1: file `/usr/lib/libtree-sitter.a' already installed by package tree-sitter-0.17.3_1.
ERROR: tree-sitter-devel-0.17.3_1: file `/usr/lib/pkgconfig/tree-sitter.pc' already installed by package tree-sitter-0.17.3_1.
ERROR: tree-sitter-devel-0.17.3_1: file `/usr/lib/libtree-sitter.so' already installed by package tree-sitter-0.17.3_1.
```

Why is this happening?