Hello,

The 'plotutils' package fails the "spline.test" on i686-linux.  Log
output here, though not much to go on:

https://ci.guix.gnu.org/log/gbcjm65ha9y52cnh4pmysbz9fi95ms08-plotutils-2.6

This is important because it is a dependency on Inkscape 1.0, which will
soon become the default Inkscape with thousands of dependent packages.