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+---
+synopsis: Remove the unused default text from `OptArg`
+packages: [Cabal]
+prs: 12199
+---
+
+The `OptArg` constructor of `OptDescr` in `Distribution.Simple.Command` no
+longer tuples default text with the default setter.  The `optArg` smart
+constructor changes similarly and `optArgDef'` is removed.