par.doc says: Rights and Responsibilities The files listed in the Files List section above are each Copyright 2001 by Adam M. Costello (henceforth "I", "me"). I grant everyone ("you") permission to do whatever you like with these files, provided that if you modify them you take reasonable steps to avoid confusing or misleading people about who wrote the modified files (both you and I) or what version they are. All official versions of Par will have version numbers consisting of only digits and periods. I encourage you to send me copies of your modifications in case I wish to incorporate them into future versions of Par. See the Bugs section for my address. Though I have tried to make sure that Par is free of bugs, I make no guarantees about its soundness. Therefore, I am not responsible for any damage resulting from the use of these files. "Do whatever you like" sounds pretty free to me (cf. wording of WTFPL-2 which is GPL compatible).
Debian also has this package in free, which confirms my conclusion above. Therefore adding this to @MISC-FREE.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=fb7a22651a93dfb33998ff7efa41495a58f8a4f3 commit fb7a22651a93dfb33998ff7efa41495a58f8a4f3 Author: Ulrich Müller <ulm@gentoo.org> AuthorDate: 2020-01-06 13:00:51 +0000 Commit: Ulrich Müller <ulm@gentoo.org> CommitDate: 2020-01-06 13:02:51 +0000 app-text/par: Fix LICENSE. Closes: https://bugs.gentoo.org/702478 Package-Manager: Portage-2.3.84, Repoman-2.3.20 Signed-off-by: Ulrich Müller <ulm@gentoo.org> app-text/par/par-1.52-r1.ebuild | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) Additionally, it has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=75f7196990f362dca466efe02bdeb25126047714 commit 75f7196990f362dca466efe02bdeb25126047714 Author: Ulrich Müller <ulm@gentoo.org> AuthorDate: 2020-01-06 12:58:35 +0000 Commit: Ulrich Müller <ulm@gentoo.org> CommitDate: 2020-01-06 13:02:50 +0000 licenses: Add "par" for app-text/par. This grants the right to "do whatever you like", therefore added to the MISC-FREE license group. Bug: https://bugs.gentoo.org/702478 Signed-off-by: Ulrich Müller <ulm@gentoo.org> licenses/par | 17 +++++++++++++++++ profiles/license_groups | 4 ++-- 2 files changed, 19 insertions(+), 2 deletions(-)