Re: [Haskell-cafe] TH to generate imports?

On Thu, Jun 11 2015, Adam Bergmark wrote:

https://ghc.haskell.org/trac/ghc/ticket/1475

HSpec uses the ghc -F -pgmF flags to run a custom pre-processor which generates imports before a testing. e.g. '{-# OPTIONS_GHC -F -pgmF hspec-discover #-}'. You might also find some inspiration in the 'imports' library on Hackage: http://hackage.haskell.org/package/imports-0.1.2.1. -Christopher

On Thu, Jun 11, 2015 at 11:12 AM, Corentin Dupont

...

wrote:

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Hi guys, I wanted to know if it's possible to use TH on an "import" statement. What I want to do is to generate the names of the packages I need to import. For example:

import $(genImport "MyPackage")

genImport :: String -> Q TH.Exp genImport s = ...

Is that possible? Thanks! Corentin

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