Add OPTIONS_HAPPY pragma for passing flags to happy#342
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sgraf812 merged 7 commits intohaskell:masterfrom Aug 16, 2025
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Add OPTIONS_HAPPY pragma for passing flags to happy#342sgraf812 merged 7 commits intohaskell:masterfrom
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Thanks for doing this! I agree it would be a nice feature to have. But I have a few smaller suggestions.
…rse` Otherwise we get a clash when users omit a `%name` declaration, because then the default name for the parser is `happyParse`.
Suggested-by: Sebastian Graf <sgraf1337@gmail.com>
Suggested-by: Sebastian Graf <sgraf1337@gmail.com>
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Thanks! I released 2.1.7 with this feature. |
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## 2.1.7
* Add support for `{-# OPTIONS_HAPPY ... #-}` pragmas
([#342](haskell/happy#342)).
* Tested with GHC 8.0 - 9.12.2.
The Haskell code generated by Happy is for GHC 8.0 and up.
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## 2.1.7
* Add support for `{-# OPTIONS_HAPPY ... #-}` pragmas
([#342](haskell/happy#342)).
* Tested with GHC 8.0 - 9.12.2.
The Haskell code generated by Happy is for GHC 8.0 and up.
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It is surprisingly difficult to get haskell build tools to pass options to
happy:cabalonly lets you do it viacabal.projectfiles or via--happy-options, and the--happy-optionflag instackis just flat-out broken. This PR tries to fix this by adding aOPTIONS_HAPPYpragma to thehappygrammar, which lets you specify options to pass to happy directly within the.yfile.