Pat Allan pat

To ensure it's available for all initialisers, you can require the file within config/application.rb by adding require_relative "settings" as the last line within the Application class definition.

The defined settings will be available via the Settings constant: e.g. Settings.default_host

Does not pay attention to Rails.configuration / Rails.application.credentials - it's expecting all secrets as ENV variables.
Requires dry-types and dry-system gems.
Allows for typed values (even if the above examples are all strings 😅).
Allows for optional values and defaults.
Inspired by Hanami's approach to such things.

Reading recommendations that have influenced my RailsConf talk and I've found useful in expanding my understanding of the world:

Also these two, which are very Australian focused, but still great perspective:

Edit 2021-02-21: I've confirmed this solution works with both heroku-18 and heroku-20 stacks.

What follows is my solution for having mysql2 gem compiled and working against MySQL v5.7 (rather than v8+) on the heroku-20 stack. This is how I've managed to make it work:

Add the apt buildstack ahead of your standard buildpack (in my case, that's Ruby):

$ heroku buildpacks:add --index 1 heroku-community/apt

Dear Senator Lambie,

I am writing in regards to the Medevac Repeal Bill, and to strongly urge you to not allow the repeal to happen.

It is our Government that has imprisoned these people in these remote and unsafe situations, and thus it is our Government that should be providing medical support, especially given the imprisonment is a significant cause in the mental health issues so many of these detainees.

While I’m sure you’re aware of this already, it’s worth noting that the legislation that was passed earlier this year is only for the current set of detainees - it does not apply to any new arrivals, and I feel our Government has been rather obtuse in any suggestions otherwise. Any suggestion that the lack of a repeal makes our country any less safe is a cruel lie.

There have been clear cases of deaths in custody that could have been prevented had proper medical assistance been provided promptly and genuinely, rather than turning these detainees into political pawns. If the repeal goes ahead, it’s quit

	# frozen_string_literal: true

	VCR.configure do \|config\|
	config.cassette_library_dir = Rails.root.join("spec/cassettes")
	config.hook_into :webmock
	config.ignore_hosts "127.0.0.1", "analytics-api.buildkite.com"
	end

	# Re-use directory structure within spec/features, to keep cassettes namespaced.
	VCRAssistant.namer = Class.new(VCRAssistant::FileName) do

	# frozen_string_literal: true

	require "delegate"
	require "webmock/rspec"

	module WebmockJSONHelpers
	def stub_request(method, uri)
	RequestStub.new(super)
	end

	# frozen_string_literal: true

	require "dry/system/errors"
	require "dry/system/settings"
	require "dry/types"

	module Types
	include Dry.Types()
	end

	require "openssl"
	require "digest/sha2"
	require "base64"
	require "ostruct"

	# Just like Aws::KMS::Client, this responds to decrypt and encrypt,
	# using the same parameters and output objects (well, at least for
	# the purposes of what I've used it for).
	#
	# So, you can inject this class in instead for test environments

	function ruby_files() {
	xargs ls -1 2>/dev/null \| grep '\.rb$'
	}

	function spec_files() {
	xargs ls -1 2>/dev/null \| grep '_spec\.rb$'
	}

	function uncommitted() {
	# first command is staged changes, second is new files and unstaged changes