Elixir 1.12+Erlang/OTP 21

Why?

Why is Elixir 1.12 incompatible with Erlang/OTP 21?

Requirement

Erlang/OTP >=22.0.0 <25.0.0

Selected version

Erlang/OTP 21

Evaluation

21.3.8 does not satisfy >=22.0.0 <25.0.0

Conclusion

INCOMPATIBLE

Evidence

CompatHub reports compatibility from upstream sources rather than making unsupported claims of its own.

• Elixir OTP Compatibility

  Confidence: HIGH

  https://github.com/elixir-lang/elixir/blob/main/lib/elixir/pages/references/compatibility-and-deprecations.md

  Retrieved 2 September 2026

  Requirement: >=22.0.0 <25.0.0

Erlang/OTP versions

Compatibility is derived from the project's declared Erlang/OTP requirement (>=22.0.0 <25.0.0); it does not mean every version combination has been independently tested.

• 21❌
• 22✓
• 23✓
• 24✓
• 25❌
• 26❌
• 27❌
• 28❌
• 29❌

Other Erlang/OTP versions satisfying this requirement

Elixir 1.12 — compatible Erlang/OTP lines tracked in CompatHub

• ✓Erlang/OTP 22version lineEOL
• ✓Erlang/OTP 23version lineEOL
• ✓Erlang/OTP 24version lineEOL

Other Elixir versions

Only lines with relevant compatibility evidence are listed.

• Elixir 1.20
• Elixir 1.19
• Elixir 1.18
• Elixir 1.17
• Elixir 1.16
• Elixir 1.15
• Elixir 1.14
• Elixir 1.13
• Elixir 1.12
• Elixir 1.11
• Elixir 1.10
• Elixir 1.9
• Elixir 1.8
• Elixir 1.7
• Elixir 1.6
• Elixir 1.5
• Elixir 1.4
• Elixir 1.3
• Elixir 1.2
• Elixir 1.1
• Elixir 1.0

Lifecycle context

Lifecycle status is separate from compatibility. An EOL component can still satisfy a documented version requirement.