Dear Maxime, Thanks for the suggestion! Now, I have asked this. https://github.com/tchitchek-lab/CytoBackBone/issues/2 [https://opengraph.githubassets.com/0db2fcd2573d74d186964b02586c50768de2bd17394f06020ea67ddcba92e496/tchitchek-lab/CytoBackBone/issues/2] License · Issue #2 · tchitchek-lab/CytoBackBone · GitHub github.com Dear Authors, Quick question: This project is licensed under GPL-2.0-only or the license GPL-2.0-or-later can be applied? I ask this because we try to add this to Guix. https://debbugs.gnu.org/cgi/bugreport.cgi?bug=54511 Thanks and all t... All the best! Mădălin Ionel Patrașcu System Administrator The Berlin Institute for Medical Systems Biology (BIMSB) Max Delbrück Center (MDC) Robert-Rössle-Straße 10 House 87, room 1.10 13125 Berlin, Germany ________________________________ From: Maxime Devos Sent: Monday, March 21, 2022 21:17 To: Patrascu, Madalin Ionel; 54511@debbugs.gnu.org Subject: [ext] Re: [bug#54511] [PATCH] gnu: Add r-cytobackbone. Mădălin Ionel Patrașcu schreef op ma 21-03-2022 om 20:19 [+0100]: > + (license license:gpl2)))) Could you ask upstream if they meant gpl2 or gpl2-or-later?