Copyright for haskell-yi-mode-haskell source package in Lunar

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: yi-mode-haskell
Upstream-Contact: Yi developers 
Source: https://hackage.haskell.org/package/yi-mode-haskell

Files: *
Copyright: Yi developers 
License: GPL-2

Files: debian/*
Copyright: held by the contributors mentioned in debian/changelog
License: GPL-2+

License: GPL-2
  This program is free software; you can redistribute it
  and/or modify it under the terms of the GNU General Public
  License as published by the Free Software Foundation;
  version 2 of the License.
  .
  This package is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY 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 
  .
  On Debian systems, the complete text of the GNU General
  Public License version 2 can be found in "/usr/share/common-licenses/GPL-2".
  
License: GPL-2+
  This package is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.
  .
  This package is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY 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 
  .
  On Debian systems, the complete text of the GNU General
  Public License version 2 can be found in "/usr/share/common-licenses/GPL-2".