nauty upstream source tarball has setgid on top-level directory

[embray]

The top-level directory in the current source tarball for the nauty spkg has the setgid bit set on it for some reason.

This probably is not intentional and may be harmless in general, but it is causing confusion for Cygwin's permission handling, making the package unbuildable.

CC: @orlitzky

Component: packages: standard

Issue created by migration from https://trac.sagemath.org/ticket/20870

[embray]

comment:1

Should this be reported upstream? Who made this tarball? This is absolutely never clear....

[dimpase]

comment:2

Please do report; however, the tarball needed to be renamed, see #19919, but not re-packed IIRC.

[jdemeyer]

comment:3

Can't this be fixed on the level of sage-uncompress-spkg? Especially since that script already fixes some permission issues.

[embray]

comment:4

It is fixed in sage-uncompress-spkg; doesn't mean it shouldn't be fixed here too.

[jdemeyer]

comment:5

Right, but then it's not so relevant for Sage.

[orlitzky]

comment:6

This was not really our problem, but in any case, they've stopped doing it in the latest tarball:

https://pallini.di.uniroma1.it/nauty27r3.tar.gz