Translations:FAQ/86/en

From NixOS Wiki

See FAQ/Pinning Nixpkgs and How to fetch Nixpkgs with an empty NIX PATH. Find the version of nixpkgs with the package version you want and pin nixpkgs to that. However, be aware that the pinning of a package of another nixpkgs version results in a much larger package size as not only the package itself but all dependencies (down to libc) have older versions.