### Description:

Our work is porting software to `RISC-V` architecture.

While porting `couchdb`, the following error occurred:

```bash
==> Entering fakeroot environment...
==> Starting package()...
rm: cannot remove '/build/couchdb/pkg/couchdb/usr/lib/couchdb/erts-13.1.1/doc': No such file or directory
rm: cannot remove '/build/couchdb/pkg/couchdb/usr/lib/couchdb/erts-13.1.1/include': No such file or directory
rm: cannot remove '/build/couchdb/pkg/couchdb/usr/lib/couchdb/erts-13.1.1/lib': No such file or directory
rm: cannot remove '/build/couchdb/pkg/couchdb/usr/lib/couchdb/erts-13.1.1/man': No such file or directory
rm: cannot remove '/build/couchdb/pkg/couchdb/usr/lib/couchdb/erts-13.1.1/src': No such file or directory
==> ERROR: A failure occurred in package().
Aborting...
==> ERROR: Build failed, check /var/lib/archbuild/extra-riscv64/root5/build
```

We check it on `x86_64` architecture, it also occurred.

The reason we found is a hardcode of version number, which looks like this:(in `PKGBUILD` file, `package()` function)

```bash
# Remove some cruft
rm -r "${pkgdir}"/usr/lib/couchdb/erts-13.1.1/{doc,include,lib,man,src}
```

The newer version of `erts`, which is actually used in compile, is `13.2`, so the system can't find the files.

Our team member suggests reporting bug on arch(here).

Hope this can be solved.

Last link is our solution `Pull Request`, which maybe used as a reference.

### Additional info:

* package version(s) 3.2.2

### Steps to reproduce:

- download the upstream PKGBUILD
- use `extra-x86_64-build` or `extra-riscv64-build` to compile
- error occurrs

### Our solution

- [Pull Request](https://github.com/felixonmars/archriscv-packages/pull/2525)