I’m not sure why I thought it was pkgs.isLinux.
Try pkgs.stdenv.isLinux instead.
$ nix eval --impure --expr '(import <nixpkgs> {}).stdenv.isLinux'
true
I’m not sure why I thought it was pkgs.isLinux.
Try pkgs.stdenv.isLinux instead.
$ nix eval --impure --expr '(import <nixpkgs> {}).stdenv.isLinux'
true