Python 3 bindings for SLEPc libraries (complex numbers)

 SLEPc is the Scalable Library for Eigenvalue Problem Computations.
 .
 It is based on PETSc and employs the MPI standard for all
 message-passing communication.
 .
 This is a dummy package that depends on slepc4py for
 the latest version of SLEPc with complex number support.
 .
 Access by setting environment variable SLEPC_DIR if the system default
 version of SLEPc is not already set to the complex build.