Bug#1099784: mercurial :FTBFS:build failed (ModuleNotFoundError: No module named 'distutils')

Source: mercurial
Version: 6.9.3-1

Severity: serious
Tags: FTBFS, patch
User: debian-riscv@lists.debian.org
Usertags: riscv64
X-Debbugs-Cc: debian-riscv@lists.debian.org

Dear mercurial maintainer,

The package mercurial build failed on riscv64.The crucial buildd log below:

```

 debian/rules override_dh_auto_build
make[1]: Entering directory '/build/reproducible-path/mercurial-6.9.3'
/usr/bin/make all PYTHON=python3.13
make[2]: Entering directory '/build/reproducible-path/mercurial-6.9.3'
python3.13 setup.py  build 
Traceback (most recent call last):
  File "/build/reproducible-path/mercurial-6.9.3/setup.py", line 114, in <module>
    from distutils.core import setup
ModuleNotFoundError: No module named 'distutils'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/build/reproducible-path/mercurial-6.9.3/setup.py", line 116, in <module>
    from setuptools import setup
ModuleNotFoundError: No module named 'setuptools'

```

The full buildd log is here:

https://buildd.debian.org/status/fetch.php?pkg=mercurial&arch=riscv64&ver=6.9.3-1&stamp=1741327548&raw=0

My solution to this issue:

This issue is caused by setuptools not being automatically installed on the RISC-V architecture and needs to be explicitly installed in debian/control. I have tested this solution,and it works well.The debpatch is in the attachment.

Gui-Yue

Best Regards