ROS2 Foxy : Unable to locate package ros-foxy-desktop

edit

running ubuntu 20.04 fresh install.. followed the directions here EXACTLY, and still unable to locate package... any ideas why?

odroid@odroid:~$ sudo apt install ros-foxy-desktop
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package ros-foxy-desktop

here is the output when i run: apt-cache search ros-foxy*

odroid@odroid:~$ apt-cache search ros-foxy*
ros-foxy-ament-cmake - The entry point package for the ament buildsystem in CMake.
ros-foxy-ament-cmake-auto - The auto-magic functions for ease to use of the ament buildsystem in CMake.
ros-foxy-ament-cmake-core - The core of the ament buildsystem in CMake.
ros-foxy-ament-cmake-export-definitions - The ability to export definitions to downstream packages in the ament buildsystem.
ros-foxy-ament-cmake-export-dependencies - The ability to export dependencies to downstream packages in the ament buildsystem in CMake.
ros-foxy-ament-cmake-export-include-directories - The ability to export include directories to downstream packages in the ament buildsystem in CMake.
ros-foxy-ament-cmake-export-interfaces - The ability to export interfaces to downstream packages in the ament buildsystem in CMake.
ros-foxy-ament-cmake-export-libraries - The ability to export libraries to downstream packages in the ament buildsystem in CMake.
ros-foxy-ament-cmake-export-link-flags - The ability to export link flags to downstream packages in the ament buildsystem.
ros-foxy-ament-cmake-gmock - The ability to add Google mock-based tests in the ament buildsystem in CMake.
ros-foxy-ament-cmake-gtest - The ability to add gtest-based tests in the ament buildsystem in CMake.
ros-foxy-ament-cmake-include-directories - The functionality to order include directories according to a chain of prefixes in 

the ament buildsystem in CMake.
ros-foxy-ament-cmake-libraries - The functionality to deduplicate libraries in the ament buildsystem in CMake.
ros-foxy-ament-cmake-nose - The ability to add nose-based tests in the ament buildsystem in CMake.

ros-foxy-ament-cmake-pytest - The ability to run Python tests using pytest in the ament buildsystem in CMake.
ros-foxy-ament-cmake-python - The ability to use Python in the ament buildsystem in CMake.
ros-foxy-ament-cmake-target-dependencies - The ability to add definitions, include directories and libraries of a package to a target in the ament buildsystem in CMake.
ros-foxy-ament-cmake-test - The ability to add tests in the ament buildsystem in CMake.
ros-foxy-ament-cmake-version - The ability to override the exported package version in the ament buildsystem.
ros-foxy-ament-package - The parser for the manifest files in the ament buildsystem.
ros-foxy-gmock-vendor - The package provides GoogleMock.
ros-foxy-gtest-vendor - The package provides GoogleTest.
ros-foxy-ros-workspace - Provides the prefix level environment files for ROS 2 packages.