Brute force copy of hie-wrapper from hie to ide

exe/Wrapper.hs

@@ -0,0 +1,108 @@
+{-# LANGUAGE CPP             #-}
+-- | This module is based on the hie-wrapper.sh script in
+-- https://github.com/alanz/vscode-hie-server
+module Main where
+
+#if __GLASGOW_HASKELL__ < 804
+import           Data.Semigroup
+#endif
+import           Data.Foldable
+import           Data.List
+import           Data.Version                          (showVersion)
+import           HIE.Bios
+import           Ide.Cradle (findLocalCradle, logm)
+import           Ide.Options
+import           Ide.Version
+import qualified Language.Haskell.LSP.Core             as Core
+import           Options.Applicative.Simple
+import qualified Paths_ide                             as Meta
+import           System.Directory
+import           System.Environment
+import           System.FilePath
+import           System.Info
+import qualified System.Log.Logger as L
+import           System.Process
+
+-- ---------------------------------------------------------------------
+
+main :: IO ()
+main = do
+    let
+        numericVersion :: Parser (a -> a)
+        numericVersion =
+            infoOption
+                (showVersion Meta.version)
+                (long "numeric-version" <>
+                 help "Show only version number")
+        compiler :: Parser (a -> a)
+        compiler =
+            infoOption
+                hieGhcDisplayVersion
+                (long "compiler" <>
+                 help "Show only compiler and version supported")
+    -- Parse the options and run
+    (global, ()) <-
+        simpleOptions
+            hieVersion
+            "haskell-ide-wrapper - Launch the appropriate haskell-ide for a given project"
+            ""
+            (numericVersion <*> compiler <*> globalOptsParser)
+            empty
+
+    run global
+
+-- ---------------------------------------------------------------------
+
+run :: GlobalOpts -> IO ()
+run opts = do
+  let mLogFileName = optLogFile opts
+
+      logLevel = if optDebugOn opts
+                   then L.DEBUG
+                   else L.INFO
+
+  Core.setupLogger mLogFileName ["hie"] logLevel
+
+  maybe (pure ()) setCurrentDirectory $ projectRoot opts
+
+
+  progName <- getProgName
+  logm $  "run entered for haskell-ide-wrapper(" ++ progName ++ ") " ++ hieVersion
+  d <- getCurrentDirectory
+  logm $ "Current directory:" ++ d
+  logm $ "Operating system:" ++ os
+  args <- getArgs
+  logm $ "args:" ++ show args
+
+  -- Get the cabal directory from the cradle
+  cradle <- findLocalCradle (d </> "File.hs")
+  let dir = cradleRootDir cradle
+  logm $ "Cradle directory:" ++ dir
+  setCurrentDirectory dir
+
+  ghcVersion <- getProjectGhcVersion cradle
+  logm $ "Project GHC version:" ++ ghcVersion
+
+  let
+    hieBin = "haskell-ide-" ++ ghcVersion
+    backupHieBin =
+      case dropWhileEnd (/='.') ghcVersion of
+        [] -> "haskell-ide"
+        xs -> "haskell-ide-" ++ init xs
+    candidates' = [hieBin, backupHieBin, "haskell-ide"]
+    candidates = map (++ exeExtension) candidates'
+
+  logm $ "haskell-ide exe candidates :" ++ show candidates
+
+  mexes <- traverse findExecutable candidates
+
+  case asum mexes of
+    Nothing -> logm $ "cannot find any haskell-ide exe, looked for:" ++ intercalate ", " candidates
+    Just e -> do
+      logm $ "found haskell-ide exe at:" ++ e
+      logm $ "args:" ++ show args
+      logm "launching ....\n\n\n"
+      callProcess e args
+      logm "done"
+
+-- ---------------------------------------------------------------------

hie.yaml.cbl

@@ -8,8 +8,11 @@ cradle:
     - path: "./test"
       component: "ide:test"
 
-    - path: "./exe"
+    - path: "./exe/Main.hs"
       component: "ide:exe:haskell-ide"
 
+    - path: "./exe/Wrapper.hs"
+      component: "ide:exe:haskell-ide-wrapper"
+
     - path: "./src"
       component: "lib:ide"

ide.cabal

@@ -28,7 +28,10 @@ source-repository head
 
 library
   exposed-modules:
+      Ide.Cradle
       Ide.Plugin.Example
+      Ide.Options
+      Ide.Version
   other-modules:
       Paths_ide
   hs-source-dirs:
@@ -39,6 +42,8 @@ library
     , async
     , binary
     , bytestring
+    , Cabal
+    , cabal-helper >= 1.0
     , containers
     , data-default
     , deepseq
@@ -48,16 +53,20 @@ library
     , fuzzy
     , ghc
     , ghcide
+    , gitrev
     , haddock-library
     , hashable
     , haskell-lsp == 0.19.*
     , haskell-lsp-types == 0.19.*
+    , hie-bios
     , hslogger
     , mtl
     , network-uri
+    , optparse-simple
     , prettyprinter
     , prettyprinter-ansi-terminal
     , prettyprinter-ansi-terminal
+    , process
     , regex-tdfa >= 1.3.1.0
     , rope-utf16-splay
     , safe-exceptions
@@ -123,6 +132,26 @@ executable haskell-ide
       Paths_ide
   default-language: Haskell2010
 
+executable haskell-ide-wrapper
+  hs-source-dirs:      exe
+  main-is:             Wrapper.hs
+  other-modules:       Paths_ide
+  autogen-modules:     Paths_ide
+  build-depends:       base
+                     , directory
+                     , filepath
+                     , haskell-lsp
+                     , hie-bios
+                     , hslogger
+                     , optparse-simple
+                     , process
+                     , ide
+  ghc-options:         -threaded -rtsopts -with-rtsopts=-N -Wall -Wredundant-constraints
+                       -with-rtsopts=-T
+  if flag(pedantic)
+     ghc-options:      -Werror
+  default-language:    Haskell2010
+
 test-suite test
   type: exitcode-stdio-1.0
   main-is: Spec.hs