#!/bin/bash
-# This will automatically upgrade to latest version at each build
-# nixpkgsNext="https://nixos.org/channels/nixos-19.03/nixexprs.tar.xz"
-nixpkgsNext="https://releases.nixos.org/nixos/19.03/nixos-19.03beta171840.23fd1394dc6/nixexprs.tar.xz"
-nixpkgsPrevious="$nixpkgsNext"
-nixpkgs="$nixpkgsNext"
-export NIX_PATH="nixpkgs=$nixpkgs:nixpkgsNext=$nixpkgsNext:nixpkgsPrevious=$nixpkgsPrevious"
-nix-env -r -i -A immaePackages -f "<nixpkgs>" "$@"
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+eval "$(make --no-print-directory -C $(dirname $DIR) nix-path)"
+nix-env -r -i -A myEnvironments.immae-eu -f "<nixpkgs>" "$@"
+result=$?
+
+cat >> $(dirname $DIR)/versions_log <<EOF
+Ran $(date) with args "$@" and returned "$result"
+$(make --no-print-directory -C $(dirname $DIR) nix-info | sed -e "s/^/ /")
+EOF