Install libncl1 by entering the following commands in the terminal:
sudo apt update sudo apt install libncl1
NEXUS Class Library
The NEXUS Class Library is a C++ library for parsing NEXUS files. . The NEXUS file format is widely used in bioinformatics. Several popular phylogenetic programs such as Paup, MrBayes, Mesquite, and MacClade use this format. . This package contains the dynamic NEXUS library.