1 # this version of nixpkgs contains liblapack at 3.8.0
2 # this version of nixpkgs contains gsl at 2.5.0
4 builtins.fetchTarball {
5 url = "https://github.com/NixOS/nixpkgs/archive/18.09.tar.gz";
6 sha256 = "1ib96has10v5nr6bzf7v8kw7yzww8zanxgw2qi1ll1sbv6kj6zpd";