Closed issue by ev-ermakov on void-packages repository

https://github.com/void-linux/void-packages/issues/25604

Description:
### System

* xuname:
  ``Void 5.8.14_1 x86_64-musl GenuineIntel uptodate rrFFFFFFF``
* package:  
  ``base-chroot-0.66`` (?)

### Expected behavior
``./xbps-src zap && ./xbps-src bootstrap`` succeeds.

### Actual behavior
```
...
[*] Collecting package files
kernel-libc-headers-4.19.0_2: collecting files...
musl-1.1.24_3: collecting files...
musl-devel-1.1.24_3: collecting files...
xbps-triggers-0.117_1: collecting files...
base-files-0.141_4: collecting files...
zlib-1.2.11_3: collecting files...
libgcc-9.3.0_6: collecting files...
libstdc++-9.3.0_6: collecting files...
binutils-2.34_1: collecting files...
libgcc-devel-9.3.0_6: collecting files...
libstdc++-devel-9.3.0_6: collecting files...
libssp-9.3.0_6: collecting files...
libssp-devel-9.3.0_6: collecting files...
gcc-9.3.0_6: collecting files...
libada-9.3.0_6: collecting files...
libada-devel-9.3.0_6: collecting files...
ERROR: libada-devel-9.3.0_6: file `/usr/lib/gcc/x86_64-linux-musl/9.3/plugin/include/ada/gcc-interface/ada-tree.def' already installed by package gcc-9.3.0_6.
Transaction failed! see above for errors.
=> ERROR: xbps-src: failed to install base-chroot!
```

### Context
``etc/conf`` contains the following line:
```
XBPS_PKG_OPTIONS_gcc=~ada
```