Can't install locales

This is the complete solution for my problem

1. install locales

sudo vim /etc/apt/sources.list

-

deb http://mirrordirector.raspbian.org/raspbian/ wheezy main contrib non-free rpi
# Uncomment line below then 'apt-get update' to enable 'apt-get source'
#deb-src http://archive.raspbian.org/raspbian/ wheezy main contrib non-free rpi
deb http://apt.adafruit.com/raspbian/ wheezy main

change wheezy to jessie

run

sudo apt-get update && sudo apt-get install locales

revert back to wheezy (change jessie to wheezy )

sudo apt-get update

sudo dpkg-reconfigure locales

Now if i run

perl

i get the following warnings

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LC_PAPER = "fr_FR.UTF-8",
        LC_ADDRESS = "fr_FR.UTF-8",
        LC_MONETARY = "fr_FR.UTF-8",
        LC_NUMERIC = "fr_FR.UTF-8",
        LC_TELEPHONE = "fr_FR.UTF-8",
        LC_IDENTIFICATION = "fr_FR.UTF-8",
        LC_MEASUREMENT = "fr_FR.UTF-8",
        LC_TIME = "fr_FR.UTF-8",
        LC_NAME = "fr_FR.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

2. Generating fr_FR.UTF-8 , and en_US.UTF-8

sudo nano /etc/locale.gen

uncomment those lines :

en_US.UTF-8
fr_FR.UTF-8

and finally running

sudo locale-gen