my_workstation/cookbooks/workstation/recipes/_apt.rb

#
# Cookbook:: workstation
# Recipe:: _apt
#
# Copyright:: 2022, The Authors, All Rights Reserved.

file '/etc/apt/sources.list' do
  action :delete
end

components_ = %w[main contrib non-free]

# Main distribution
apt_repository 'debian_testing' do
  arch 'amd64'
  uri 'http://deb.debian.org/debian/'
  distribution 'testing'
  components components_
  deb_src true
  action :add
end

apt_repository 'debian_testing_updates' do
  arch 'amd64'
  uri 'http://deb.debian.org/debian/'
  distribution 'testing-updates'
  components components_
  deb_src true
  action :add
end

apt_repository 'debian_testing_security' do
  arch 'amd64'
  uri 'http://deb.debian.org/debian-security'
  distribution 'testing-security'
  components components_
  deb_src true
  action :add
end

apt_repository 'debian_testing_proposed_updates' do
  arch 'amd64'
  uri 'http://deb.debian.org/debian/'
  distribution 'testing-proposed-updates'
  components components_
  deb_src true
  action :add
end

# Stable in case package not found in testing
apt_repository 'debian_stable' do
  arch 'amd64'
  uri 'http://deb.debian.org/debian/'
  distribution 'stable'
  components components_
  deb_src true
  action :add
end

# Apt configuration
file '/etc/apt/apt.conf.d/01norecommend' do
  owner 'root'
  group 'root'
  mode '0644'
  content <<-_EOF.gsub(/^\s+/, '')
    APT::Install-Recommends "0";
    APT::Install-Suggests "0";
  _EOF
end