There is an updated pull request by HiPhish against master on the void-packages repository

https://github.com/HiPhish/void-packages sbcl-doc
https://github.com/void-linux/void-packages/pull/34730

(help needed) New package: sbcl-doc-2.1.11
Add the GNU Info manual for SBCL and its accompanying ASDF manual.

This package has an issue: it will install the manual with the `sbcl` package as well. This is due to the fact that the `do_install` function of the `sbcl` package runs `install.sh`, which will install the manual if it is available. There does not seem to be a way of suppressing that behaviour.

I tried to define a custom `do_build` function inside the subpackage, but it appears that it is not being run: 

```sh
sbcl-doc_package() {
	short_desc+=" - documentation"
	do_build() {
		(cd ./doc/manual; make info)
	}
	pkg_install() {
		vmkdir 'usr/share/info'
		vcopy "doc/manual/*.info*" 'usr/share/info'
	}
}
```

#### Testing the changes
- I tested the changes in this PR: **YES**

#### New package
- This new package conforms to the [quality requirements](https://github.com/void-linux/void-packages/blob/master/Manual.md#quality-requirements): **YES**

A patch file from https://github.com/void-linux/void-packages/pull/34730.patch is attached