#!/bin/bash
-# This will automatically upgrade to latest version at each build
-# nixpkgs="https://nixos.org/channels/nixos-19.03/nixexprs.tar.xz"
-nixpkgs="https://releases.nixos.org/nixos/19.03/nixos-19.03beta171931.3a4ffdd38b5/nixexprs.tar.xz"
+if [ -z "$NIXOPS_DEPLOYMENT" ]; then
+ # This will automatically upgrade to latest version at each build
+ nixpkgs="https://nixos.org/channels/nixos-19.03/nixexprs.tar.xz"
+else
+ nixpkgs="https://releases.nixos.org/nixos/19.03/nixos-19.03.172361.cf3e277dd0b/nixexprs.tar.xz"
+fi
nixpkgsPrevious="$nixpkgs"
nixpkgsNext="$nixpkgs"
export NIX_PATH="nixpkgs=$nixpkgs:nixpkgsNext=$nixpkgsNext:nixpkgsPrevious=$nixpkgsPrevious"