Unclear whether license is either `GPL-2.0-or-later` or `GPL-2.0-only`
i've checked a bunch of catfish source files, and all of them have this license header:
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2, as published
# by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranties of
# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
# PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <https://www.gnu.org/licenses/>.
this header makes no mention of allowing versions of the GPL later than version 2, therefore going just by this, catfish's license is GPL-2.0-only
however, i then found this line:
license='GPL-2+',
so there's something of a contradiction here, what is the correct license for catfish?