GHC 9.12 introduces multiple new language extensions, including multiline string literals, Or-Patterns, and NamedDefaults. It also includes improvements to backtraces and exceptions, as well as experimental support for RISC-V and SIMD. Cabal 3.14 adds new fields, dynamic compilation with profiling, and enhances several commands and checks. Deprecated support and removed elements are highlighted in both releases.

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GHC 9.12Cabal 3.14

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