Ubuntu comes with keyboard layouts like "Germany Eliminate Dead Keys", which are practical for programming.

Rails Long Term Support

Rails LTS provides security patches for old versions of Ruby on Rails (2.3, 3.2, 4.2 and 5.2)

• Prevents you from data breaches and liability risks
• Upgrade at your own pace
• Works with modern Rubies

Read more Show archive.org snapshot

If you need to type accented characters with such a layout, make sure to configure a Compose key. You can then look up Show archive.org snapshot which compose combo will produce the character you need.

E.g. you can type "á" by pressing Compose, ´, a.