# nix-env -iA nixos.nix
replacing old ‘nix-1.11.16’
installing ‘nix-2.1.1’
download-using-manifests.pl: perl: warning: Setting locale failed.
download-using-manifests.pl: perl: warning: Please check that your locale settings:
download-using-manifests.pl: 	LANGUAGE = (unset),
download-using-manifests.pl: 	LC_ALL = "en_US.UTF-8",
download-using-manifests.pl: 	LANG = "en_US.UTF-8"
download-using-manifests.pl:     are supported and installed on your system.
download-using-manifests.pl: perl: warning: Falling back to the standard locale ("C").
download-from-binary-cache.pl: perl: warning: Setting locale failed.
download-from-binary-cache.pl: perl: warning: Please check that your locale settings:
download-from-binary-cache.pl: 	LANGUAGE = (unset),
download-from-binary-cache.pl: 	LC_ALL = "en_US.UTF-8",
download-from-binary-cache.pl: 	LANG = "en_US.UTF-8"
download-from-binary-cache.pl:     are supported and installed on your system.
download-from-binary-cache.pl: perl: warning: Falling back to the standard locale ("C").
these paths will be fetched (32.36 MiB download, 34.12 MiB unpacked):
  /nix/store/3jqw6x7dcln95m984cj6xqj6r0748khd-nix-2.1.1-debug
  /nix/store/dsvnlsalq99abjblw49l727163p8j5ak-nix-2.1.1-dev
fetching path ‘/nix/store/3jqw6x7dcln95m984cj6xqj6r0748khd-nix-2.1.1-debug’...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = (unset),
	LC_ALL = "en_US.UTF-8",
	LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

*** Downloading ‘https://cache.nixos.org/nar/0hckssghzn8czpz0ip6xnnka7bzq5vb5fmiqn3axgl91r3hkjlmw.nar.xz’ to ‘/nix/store/3jqw6x7dcln95m984cj6xqj6r0748khd-nix-2.1.1-debug’...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 32.3M  100 32.3M    0     0  5194k      0  0:00:06  0:00:06 --:--:-- 6247k

fetching path ‘/nix/store/dsvnlsalq99abjblw49l727163p8j5ak-nix-2.1.1-dev’...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = (unset),
	LC_ALL = "en_US.UTF-8",
	LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

*** Downloading ‘https://cache.nixos.org/nar/088gvphrcppxglr3c54awkr81ij7xvqn6d95bjr86s88jahr9zcj.nar.xz’ to ‘/nix/store/dsvnlsalq99abjblw49l727163p8j5ak-nix-2.1.1-dev’...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 52860  100 52860    0     0   156k      0 --:--:-- --:--:-- --:--:--  156k

building path(s) ‘/nix/store/5ngpkpjmy8rs3z82siaxy22bpkqwl2zd-user-environment’
created 35 symlinks in user environment