File babeltrace2.spec of Package failed_babeltrace21

```
Name:           babeltrace2
Version:        2.1.0
Release:        1.1
Summary:        Babeltrace 2 - Trace processing library and toolkit
License:        LGPLv2.1+
Group:          Development/Libraries
URL:            https://babeltrace.org/
Source0:        https://www.efficios.com/files/babeltrace/babeltrace2-2.1.0.tar.bz2
BuildRequires:  gcc-c++
BuildRequires:  glib2-devel
BuildRequires:  python3-devel
BuildRequires:  python3-setuptools
BuildRequires:  swig
BuildRequires:  bison
BuildRequires:  flex
BuildRequires:  pkgconfig
Requires:       python3

%description
Babeltrace 2 is a trace processing library and toolkit. It provides tools
and libraries for reading, writing, and converting traces in various formats.

%prep
%setup -q

%build
export PYTHON=python3
export PYTHON_CONFIG=python3-config
%configure --disable-static --disable-Werror --docdir=%{_docdir}/%{name} --enable-python-bindings
make %{?_smp_mflags}

%install
%make_install

%files
%license COPYING
%doc README.md
%{_bindir}/babeltrace2
%{_libdir}/libbabeltrace2.so.*
%{_includedir}/babeltrace2
%{_datadir}/babeltrace2
%{_docdir}/%{name}

%changelog
* Fri Aug 08 2025 Your Name <your.email@example.com> - 2.1.0-1.1
- Add BuildRequires for python3-setuptools to fix build failure with Python 3.12+.
```

### Explanation of Changes
1. **Added `BuildRequires: python3-setuptools`:**
   - This ensures that the `setuptools` module is installed in the build environment, resolving the error caused by the absence of `distutils` in Python 3.12+.

2. **No Other Changes:**
   - The rest of the file remains unchanged, as the error is specific to the missing `setuptools` dependency.

### Next Steps
After applying this change, rebuild the package using the same build environment. The build should now proceed without encountering the `setuptools`-related error. If additional issues arise, they will need to be diagnosed and addressed separately.