The SPKG.txt of the gfan spkg does not specify license exactly

[sagetrac-broune]

The gfan SPKG.txt says:

License

• GPL

it does not say which version of the GPL it is.

Component: commutative algebra

Issue created by migration from https://trac.sagemath.org/ticket/3043

[sagetrac-mabshoff]

comment:1

Well, the gfan code base is rather sloppy in this regard:

• it never specifies the license other than GPL
• zero files have a copyright statement in them

So in conclusion this must be solved upstream by the author. The FSF read on this is if you include a version of the GPL Version X then your software is licensed under GPL Version X+

Cheers,

Michael

[aghitza]

comment:3

Both the version of gfan that's currently in Sage (0.3) and the latest version (0.4plus) have a file COPYING which is just the text of GPL version 2. I would say that's pretty clear, and it should be in the file SPKG.txt.

[sagetrac-mvngu]

comment:4

Close as fixed by #7820.