Object oriented framework for large scale data analysis Formula was removed
Last versions were

Revision: 1

root6 requires the following formulae to be installed:
cmake 3.11.1 Cross-platform make
xrootd 4.8.2 High performance, scalable, fault-tolerant access to data
fftw 3.3.7_1 C routines to compute the Discrete Fourier Transform
openssl 1.0.2o_1 SSL/TLS cryptography library
gsl 2.4 Numerical library for C and C++

Recent formula history

FX Coudert root & root6: migrate to homebrew/core
ilovezfs root6 6.10.04
ilovezfs root6 6.10.02
Michka Popoff root6: revision for gsl
Michka Popoff root6: add graphviz dependency

Formula code at GitHub