Tools for BCF/VCF files and variant calling from samtools
http://www.htslib.org/ Formula was removed
Last version was
bcftools requires the following formulae to be installed:
gsl 2.4 Numerical library for C and C++
xz 5.2.3 General-purpose data compression with high compression ratio
bzip2 1.0.6_1 Freely available high-quality data compressor

Recent formula history

Shaun Jackman bcftools: migrate to homebrew/core (#6512)
Shaun Jackman bcftools: Fix build with upstream patch
Torsten Seemann bcftools 1.6
ilovezfs bcftools 1.4.1
ilovezfs bcftools 1.4

Formula code at GitHub