Where to “post preprocessor”?












0















I have a project of C lib binding, which uses C2HS. Now I want to make some wrappers. Instead of manually writing them, I'd like to generate them by Cabal custom-setup.



The problem is that, I could not figure out a place to do it.



If there was no preprocessor, I could fake my generator as a preprocessor and use existing mechanism of Cabal (hookedPreProcessors) to do the task.



But since there is a preprocessor, the task must be done against the buildDir of LocalBuildInfo. And preprocessor is called deeply in buildHook.



So to sum up, is there a place in Cabal setup process that I could insert a task before ghc compilation and after other proprocessors?










share|improve this question























  • Is the generated code Haskell? Then you might try Template Haskell. Or you could take inspiration on how Amazonka does it.

    – Reactormonk
    Jan 2 at 9:33











  • I am not sure Template Haskell works for me. I need to use the result of another preprocessor. Thanks for the Amazonka suggestion. Let me see what it does.

    – Magicloud
    Jan 4 at 7:52
















0















I have a project of C lib binding, which uses C2HS. Now I want to make some wrappers. Instead of manually writing them, I'd like to generate them by Cabal custom-setup.



The problem is that, I could not figure out a place to do it.



If there was no preprocessor, I could fake my generator as a preprocessor and use existing mechanism of Cabal (hookedPreProcessors) to do the task.



But since there is a preprocessor, the task must be done against the buildDir of LocalBuildInfo. And preprocessor is called deeply in buildHook.



So to sum up, is there a place in Cabal setup process that I could insert a task before ghc compilation and after other proprocessors?










share|improve this question























  • Is the generated code Haskell? Then you might try Template Haskell. Or you could take inspiration on how Amazonka does it.

    – Reactormonk
    Jan 2 at 9:33











  • I am not sure Template Haskell works for me. I need to use the result of another preprocessor. Thanks for the Amazonka suggestion. Let me see what it does.

    – Magicloud
    Jan 4 at 7:52














0












0








0








I have a project of C lib binding, which uses C2HS. Now I want to make some wrappers. Instead of manually writing them, I'd like to generate them by Cabal custom-setup.



The problem is that, I could not figure out a place to do it.



If there was no preprocessor, I could fake my generator as a preprocessor and use existing mechanism of Cabal (hookedPreProcessors) to do the task.



But since there is a preprocessor, the task must be done against the buildDir of LocalBuildInfo. And preprocessor is called deeply in buildHook.



So to sum up, is there a place in Cabal setup process that I could insert a task before ghc compilation and after other proprocessors?










share|improve this question














I have a project of C lib binding, which uses C2HS. Now I want to make some wrappers. Instead of manually writing them, I'd like to generate them by Cabal custom-setup.



The problem is that, I could not figure out a place to do it.



If there was no preprocessor, I could fake my generator as a preprocessor and use existing mechanism of Cabal (hookedPreProcessors) to do the task.



But since there is a preprocessor, the task must be done against the buildDir of LocalBuildInfo. And preprocessor is called deeply in buildHook.



So to sum up, is there a place in Cabal setup process that I could insert a task before ghc compilation and after other proprocessors?







haskell cabal






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jan 1 at 4:07









MagicloudMagicloud

3011311




3011311













  • Is the generated code Haskell? Then you might try Template Haskell. Or you could take inspiration on how Amazonka does it.

    – Reactormonk
    Jan 2 at 9:33











  • I am not sure Template Haskell works for me. I need to use the result of another preprocessor. Thanks for the Amazonka suggestion. Let me see what it does.

    – Magicloud
    Jan 4 at 7:52



















  • Is the generated code Haskell? Then you might try Template Haskell. Or you could take inspiration on how Amazonka does it.

    – Reactormonk
    Jan 2 at 9:33











  • I am not sure Template Haskell works for me. I need to use the result of another preprocessor. Thanks for the Amazonka suggestion. Let me see what it does.

    – Magicloud
    Jan 4 at 7:52

















Is the generated code Haskell? Then you might try Template Haskell. Or you could take inspiration on how Amazonka does it.

– Reactormonk
Jan 2 at 9:33





Is the generated code Haskell? Then you might try Template Haskell. Or you could take inspiration on how Amazonka does it.

– Reactormonk
Jan 2 at 9:33













I am not sure Template Haskell works for me. I need to use the result of another preprocessor. Thanks for the Amazonka suggestion. Let me see what it does.

– Magicloud
Jan 4 at 7:52





I am not sure Template Haskell works for me. I need to use the result of another preprocessor. Thanks for the Amazonka suggestion. Let me see what it does.

– Magicloud
Jan 4 at 7:52












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