Hi... I happened to find Singular-related rpm packages on my Fedora-34 system.
$ dnf list \*[sS]ingular\* > Fedora 34 - x86_64 13 kB/s | 6.6 kB > 00:00 > Fedora 34 openh264 (From Cisco) - x86_64 1.7 kB/s | 989 B > 00:00 > Fedora Modular 34 - x86_64 21 kB/s | 6.5 kB > 00:00 > Fedora 34 - x86_64 - Updates 17 kB/s | 4.8 kB > 00:00 > Fedora 34 - x86_64 - Updates 1.4 MB/s | 5.4 MB > 00:03 > Fedora Modular 34 - x86_64 - Updates 22 kB/s | 6.2 kB > 00:00 > google-chrome 12 kB/s | 1.3 kB > 00:00 > google-chrome 6.4 kB/s | 3.5 kB > 00:00 > RPM Fusion for Fedora 34 - Free 8.4 kB/s | 6.8 kB > 00:00 > RPM Fusion for Fedora 34 - Free - Updates 10 kB/s | 5.6 kB > 00:00 > RPM Fusion for Fedora 34 - Free - Updates 107 kB/s | 334 kB > 00:03 > RPM Fusion for Fedora 34 - Nonfree 13 kB/s | 7.1 kB > 00:00 > RPM Fusion for Fedora 34 - Nonfree - Updates 12 kB/s | 6.6 kB > 00:00 > RPM Fusion for Fedora 34 - Nonfree - Updates 38 kB/s | 66 kB > 00:01 > Installed Packages > Singular.x86_64 4.2.0p2-3.fc34 > @updates > Singular-libpolys.x86_64 4.2.0p2-3.fc34 > @updates > Singular-libs.x86_64 4.2.0p2-3.fc34 > @updates > Available Packages > Singular-devel.i686 4.2.0p2-3.fc34 > updates > Singular-devel.x86_64 4.2.0p2-3.fc34 > updates > Singular-doc.x86_64 4.2.0p2-3.fc34 > updates > Singular-emacs.x86_64 4.2.0p2-3.fc34 > updates > Singular-libpolys.i686 4.2.0p2-3.fc34 > updates > Singular-libpolys-devel.i686 4.2.0p2-3.fc34 > updates > Singular-libpolys-devel.x86_64 4.2.0p2-3.fc34 > updates > Singular-libs.i686 4.2.0p2-3.fc34 > updates > Singular-polymake.x86_64 4.1.1p3-24.fc34 > fedora > Singular-surfex.x86_64 4.2.0p2-3.fc34 > updates > gap-pkg-singular.noarch 2020.12.18-2.fc34 > fedora > gap-pkg-singular-doc.noarch 2020.12.18-2.fc34 > fedora > perl-Lingua-EN-PluralToSingular.noarch 0.21-11.fc34 > fedora > polymake-singular.i686 4.3-4.fc34 > fedora > polymake-singular.x86_64 4.3-4.fc34 > fedora > python3-jupyter-kernel-singular.noarch 0.9.9-5.fc34 > fedora > python3-pysingular.x86_64 0.9.7-7.fc34 > updates > singularity.x86_64 3.8.0-1.fc34 > updates > $ dnf info Singular > Last metadata expiration check: 0:14:18 ago on Wed 18 Aug 2021 05:07:01 PM > JST. > Installed Packages > Name : Singular > Version : 4.2.0p2 > Release : 3.fc34 > Architecture : x86_64 > Size : 28 M > Source : Singular-4.2.0p2-3.fc34.src.rpm > Repository : @System > From repo : updates > Summary : Computer Algebra System for polynomial computations > URL : https://www.singular.uni-kl.de/ > License : GPLv2 or GPLv3 > Description : Singular is a computer algebra system for polynomial > : computations, with special emphasis on commutative and > : non-commutative algebra, algebraic geometry, and > singularity > : theory. > But there exists no fedora.txt file in sage pkgs directory. $ ls build/pkgs/singular/distros/ > conda.txt freebsd.txt macports.txt repology.txt > debian.txt homebrew.txt nix.txt > Isn't it possible to use them in Sage? Kazuyoshi -- Kazuyoshi Furutaka -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/CANjERveZZ11JxrzDpWF7HXETeD9wDMi%3DJv9237j-89EZhcUCiQ%40mail.gmail.com.