joehealy

{ nixpkgs ? import <nixpkgs> {}, compiler ? "default" }:

let

  inherit (nixpkgs) pkgs;

  f = { mkDerivation, ad, aeson, base, bytestring, containers
      , deepseq, filepath, process, random, raw-strings-qq, split, stdenv
      , tasty, tasty-expected-failure, tasty-golden, tasty-hunit
      , temporary, python3, python3Packages.matplotlib

joehealy

{pkgs, lib, ... }:
let

  pinRollback = pkgs.writeShellScriptBin "ar-pin-rollback"
  ''

  CURVERSION=$(nix-env --list-generations -p /nix/var/nix/profiles/system | grep -Po '([0-9]+)(?=\s+[0-9 -]+ [0-9 :]+\s*\(current\))')

  echo Setting /nix/var/nix/rollback-version to $CURVERSION
  echo $CURVERSION > /nix/var/nix/rollback-version