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How can I point my nix installation (on macOS) to a specific version of nixpkgs? I'm trying to ensure that my home and office computers always use the same versions of all packages.

Maxim
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1 Answers1

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You can pin the nixpkgs version like shown in the wiki

import (builtins.fetchTarball {
  # Descriptive name to make the store path easier to identify
  name = "nixos-unstable-2018-09-12";
  # Commit hash for nixos-unstable as of 2018-09-12
  url = "https://github.com/nixos/nixpkgs/archive/ca2ba44cab47767c8127d1c8633e2b581644eb8f.tar.gz";
  # Hash obtained using `nix-prefetch-url --unpack <url>`
  sha256 = "1jg7g6cfpw8qvma0y19kwyp549k1qyf11a5sg6hvn6awvmkny47v";
}) {}
pinpox
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