# /nix/store/1c8bxxz2wq8a5c6sqabl04f1b7zfvkg6-nix-2.3.10/bin/nix-env --profile /nix/var/nix/profiles/per-user/root/channels --file "<nix/unpack-channel.nix>" --install --from-expression "f: f { name = \"nixos-21.03pre262347.257cbbcd3ab\"; channelName = \"nixos\"; src = builtins.storePath \"/nix/store/vchljjh2xapqricl4hfa42z1q256lfh0-nixexprs.tar.xz\";  }"  "f: f { name = \"nixpkgs\"; channelName = \"nixpkgs\"; src = builtins.storePath \"/nix/store/vchljjh2xapqricl4hfa42z1q256lfh0-nixexprs.tar.xz\";  }"
warning: Nix search path entry '/nix/var/nix/profiles/per-user/root/channels' does not exist, ignoring
installing 'nixos-21.03pre262347.257cbbcd3ab'
installing 'nixpkgs'
these derivations will be built:
  /nix/store/9pk2qjbq2vp186bwr0kmgppn44bvcz2n-nixpkgs.drv
  /nix/store/jkwqk2bnbxn43xsxrak1zffgjjslrwjc-nixos-21.03pre262347.257cbbcd3ab.drv