This bug appears to have been reported against 'rawhide' during the Fedora 24 development cycle.
Changing version to '24'.

More information and reason for this action is here:
https://fedoraproject.org/wiki/Fedora_Program_Management/HouseKeeping/Fedora24#Rawhide_Rebase

Hello Edouard,

Do you need any help adding Python 3 support to the RPM?

If you need more instructions, a [guide] for porting Python-based RPMs is available.

[guide] http://python-rpm-porting.readthedocs.org/en/latest/index.html

I've followed the guide and now fedpkg build fails because python-glances is not in tag list for f25.

here is my new spec file:
%global srcname glances 
%global sum	CLI curses based monitoring tool

Name:		python-%{srcname}		
Version:	2.6.1
Release:	1%{?dist}
Summary:	%{sum}

Group:		Applications/System		
License:	GPLv3
URL:		https://github.com/nicolargo/glances
Source0:	https://github.com/nicolargo/glances/archive/v%{version}.tar.gz
BuildArch:	noarch
BuildRequires:  python2-devel python3-devel
BuildRequires:	python-setuptools python3-setuptools
BuildRequires:	python2-psutil >= 2.0.0
BuildRequires:	python3-psutil >= 2.0.0
Requires:	python-setuptools python3-setuptools
Requires:	python2-psutil >= 2.0.0
Requires:	python3-psutil >= 2.0.0

%description
Glances is a CLI curses based monitoring tool for both GNU/Linux and BSD.

Glances uses the PsUtil library to get information from your system.

It is developed in Python.


%package -n python2-%{srcname}
Summary:        %{sum}
%{?python_provide:%python_provide python2-%{srcname}}

%description -n python2-%{srcname}
Glances is a CLI curses based monitoring tool for both GNU/Linux and BSD.

Glances uses the PsUtil library to get information from your system.

It is developed in Python.


%package -n python3-%{srcname}
Summary:        %{sum}
%{?python_provide:%python_provide python3-%{srcname}}

%description -n python3-%{srcname}
Glances is a CLI curses based monitoring tool for both GNU/Linux and BSD.

Glances uses the PsUtil library to get information from your system.

It is developed in Python.


%prep
%autosetup -n %{srcname}-%{version}

%build
%py2_build
%py3_build

%install
# Must do the python2 install first because the scripts in /usr/bin are
# overwritten with every setup.py install, and in general we want the
# python3 version to be the default.
%py2_install
%py3_install

%check
%{__python2} setup.py test
%{__python3} setup.py test

%clean
rm -rf %{buildroot} 


%files -n python2-%{srcname}
%defattr(-,root,root,-)
%doc AUTHORS COPYING README.rst NEWS 
%{_bindir}/glances
%{python2_sitelib}/*
%exclude %{_datadir}/doc/glances
%{_datadir}/man/man1/glances.1.gz

%files -n python3-%{srcname}
%defattr(-,root,root,-)
%doc AUTHORS COPYING README.rst NEWS
%{_bindir}/glances
%{python3_sitelib}/*
%exclude %{_datadir}/doc/glances
%{_datadir}/man/man1/glances.1.gz


%changelog
* Thu Apr 28 2016 Edouard Bourguignon <madko> - 2.6.1
- Update to 2.6.1
- Provides python2 and python3 packages

Any idea?

You cannot rename the package that's already in dist-git.

For the sake of simplicity, just keep the package main name as glances.

It would also be good to provide glances from the python2 subpackage just to not break upgrade path:

%package -n python2-%{srcname}
# ...
Provides: %{srcname} = %{version}-%{release}

Also, you are trying to package %{_bindir}/glances to both subpackages, this is not going to work. See http://python-rpm-porting.readthedocs.io/en/latest/application-modules.html#files

Created attachment 1205109 [details]
Version update, fixed file section

Hello,
what about this patch? It provides the latest version, original name of the package and fixed file section. 

Koji scratch build: http://koji.fedoraproject.org/koji/taskinfo?taskID=15822881

This message is a reminder that Fedora 24 is nearing its end of life.
Approximately 2 (two) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 24. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '24'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version'
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not
able to fix it before Fedora 24 is end of life. If you would still like
to see this bug fixed and are able to reproduce it against a later version
of Fedora, you are encouraged  change the 'version' to a later Fedora
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's
lifetime, sometimes those efforts are overtaken by events. Often a
more recent Fedora release includes newer upstream software that fixes
bugs or makes them obsolete.

In f26 this is fixed: The `glances` package uses Python 3, and a python2-glances package is available with code.