iscream depends on htslib header files and uses Rhtslib as the source by
default. However, using htslib from other sources can improve its performance.
See https://huishenlab.github.io/iscream/dev/articles/htslib.html.

Ubuntu: sudo apt-get install -y libhts-dev tabix
Fedora/RHEL: sudo dnf install -y htslib-devel
MacOS with brew: brew install htslib