hi i am on debian 12,
perl: warning: Falling back to the standard locale ("C").

nix shell nixpkgs#cloc

 $ cloc --vcs git
/nix/store/q8qq40xg2grfh9ry1d9x4g7lq4ra7n81-bash-5.2-p21/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
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").
      18 text files.
      10 unique files.
       8 files ignored.

hi i am on debian 12,
perl: warning: Falling back to the standard locale ("C").

nix shell nixpkgs#cloc

 $ cloc --vcs git
/nix/store/q8qq40xg2grfh9ry1d9x4g7lq4ra7n81-bash-5.2-p21/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
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").

perl --version

This is perl 5, version 36, subversion 0 (v5.36.0) built for x86_64-linux-gnu-thread-multi
(with 53 registered patches, see perl -V for more detail)

Copyright 1987-2022, Larry Wall

Perl may be copied only under the terms of either the Artistic License or the
GNU General Public License, which may be found in the Perl 5 source kit.

Complete documentation for Perl, including FAQ lists, should be found on
this system using "man perl" or "perldoc perl".  If you have access to the
Internet, point your browser at https://www.perl.org/, the Perl Home Page.

which perl
/bin/perl

the problem does not resolve even if i use

nix shell nixpkgs#cloc nixpkgs#perl

In reply to @andy.99:matrix.org
there is some i18n translation setting that can be tweaked on nixos using the config file
not sure if its equivalent is present on non-nixos