I have successfully installed Coq 8.6 and CoqIDE in Linux (Ubuntu 17.04). However, I don\'t know to proceed in order to add SSReflect and MathComp to this installation. All
For sake of completeness, an alternative way is by using the Nix package manager (instead of OPAM). After installing it (curl https://nixos.org/nix/install | sh
), you can launch a CoqIDE with Math-Comp available with the following command:
nix-shell -p coqPackages_8_6.mathcomp --run coqide
Then you can just start your file with From mathcomp Require Import ssreflect.