When K is a finitely-presented Lie algebra, the GAP operation
IsomorphismSCTableAlgebra can be used to make the structure
of K explicit, in the form of an isomorphic algebra given by
structure constants, which is much more amenable to further
computations.
The GAP FPLSA package installs an alternative method for this operation, which calls an external C program (fplsa version 4.0) to do the hard part of the computation. This speeds up the calculation and permits larger problems to be attempted. The external program has much additional functionality which is not used by the present version of the package.
gap-pkg-fplsa-1.2.6-1.fc41.src.rpm
For the purpose of submitting this package to Fedora, here is the RPM spec file.