cabal-read: emigrate

krebs/5pkgs/simple/cabal-read.nix

@@ -1,39 +0,0 @@
-{ writeHaskellPackage }:
-
-# Because `sed -n 's/.*\<ghc-options:\s\+\(.*\)/\1/p'` is too simple.
-writeHaskellPackage "cabal-read" {
-  executables.ghc-options = {
-    extra-depends = ["Cabal"];
-    text = /* haskell */ ''
-      {-# LANGUAGE CPP #-}
-      module Main (main) where
-      import Data.List
-      import Data.Maybe
-      import Distribution.Compiler
-      import Distribution.PackageDescription.Parsec
-      import Distribution.Types.BuildInfo
-      import Distribution.Types.CondTree
-      import Distribution.Types.Executable
-      import Distribution.Types.GenericPackageDescription
-      import Distribution.Types.UnqualComponentName
-      import Distribution.Verbosity
-      import System.Environment
-      main :: IO ()
-      main = do
-          [path, name] <- getArgs
-
-          desc <- readGenericPackageDescription normal path
-
-          case lookup (mkUnqualComponentName name) (condExecutables desc) of
-            Just exe ->
-              putStrLn . intercalate " " . fromMaybe [] . lookup GHC
-      #if MIN_VERSION_Cabal(3,0,0)
-                       . perCompilerFlavorToList
-      #endif
-                       . options . buildInfo . condTreeData $ exe
-
-            Nothing ->
-              error ("executable " <> name <> " not found in " <> path)
-    '';
-  };
-}