chore(bindings/haskell): add rpath to haskell linker option

.github/workflows/bindings_haskell.yml

@@ -62,7 +62,7 @@ jobs:
       - name: Build & Test
         working-directory: "bindings/haskell"
         run: |
-          LD_LIBRARY_PATH=../../target/debug cabal test
+          cabal test
       - name: Save haskell cache
         uses: actions/cache/save@v3
         with:

bindings/haskell/CONTRIBUTING.md

@@ -39,17 +39,16 @@ To verify that everything is working properly, run `ghc -V` and `cabal -V`:
 
 ```shell
 > ghc -V
-The Glorious Glasgow Haskell Compilation System, version 9.6.1
+The Glorious Glasgow Haskell Compilation System, version 9.2.8
 > cabal -V
-cabal-install version 3.10.1.0
-compiled using version 3.10.1.0 of the Cabal library
+cabal-install version 3.6.2.0
+compiled using version 3.6.2.0 of the Cabal library
 ```
 
 ## Build
 
 ```shell
-cargo build
-LIBRARY_PATH=../../target/debug cabal build
+cabal build
 ```
 
 To clean up the build:
@@ -64,7 +63,7 @@ cabal clean
 We use [`tasty`](https://hackage.haskell.org/package/tasty) as the test framework. To run the tests:
 
 ```shell
-LD_LIBRARY_PATH=../../target/debug cabal test
+cabal test
 ```
 
 ```text
@@ -85,20 +84,3 @@ cabal haddock
 ```
 
 If your `cabal` version is greater than `3.8`, you can use `cabal haddock --open` to open the documentation in your browser. Otherwise, you can visit the documentation from `dist-newstyle/build/$ARCH/ghc-$VERSION/opendal-$VERSION/doc/html/opendal/index.html`.
-
-## Misc
-
-If you don't want to specify `LIBRARY_PATH` and `LD_LIBRARY_PATH` every time, you can use [`direnv`](https://direnv.net/) to set the environment variable automatically. Add the following to your `.envrc`:
-
-```shell
-export LIBRARY_PATH=../../target/debug:$LIBRARY_PATH
-export LD_LIBRARY_PATH=../../target/debug:$LD_LIBRARY_PATH
-```
-
-If you are using [`Haskell`](https://marketplace.visualstudio.com/items?itemName=haskell.haskell) in VSCode, you may need to add the following configuration to your `settings.json`:
-
-```json
-"haskell.serverEnvironment": {
-    "LIBRARY_PATH": "../../target/debug:$LIBRARY_PATH"
-},
-```

bindings/haskell/README.md

@@ -35,24 +35,14 @@ main = do
 
 ## Build
 
-1. Build OpenDAL Haskell Interface
-
-```bash
-cargo build --package opendal-hs
-```
-
-2. Build Haskell binding
-
-If you don't want to install `libopendal_hs`, you need to specify library path manually by `LIBRARY_PATH=${OPENDAL_ROOT}/target/debug`.
-
 ```bash
-LIBRARY_PATH=... cabal build
+cabal build
 ```
 
 ## Test
 
 ```bash
-LD_LIBRARY_PATH=... cabal test
+cabal test
 ```
 
 ## Doc

bindings/haskell/Setup.hs

@@ -51,7 +51,8 @@ rustConfHook (description, buildInfo) flags = do
                   library
                     { PD.libBuildInfo =
                         libraryBuildInfo
-                          { PD.extraLibDirs = dir : PD.extraLibDirs libraryBuildInfo
+                          { PD.extraLibDirs = dir : PD.extraLibDirs libraryBuildInfo,
+                            PD.ldOptions = ("-Wl,-rpath," ++ dir) : (PD.ldOptions libraryBuildInfo)
                           }
                     }
             }
@@ -60,27 +61,18 @@ rustConfHook (description, buildInfo) flags = do
 rustBuildHook :: PD.PackageDescription -> LocalBuildInfo -> UserHooks -> BuildFlags -> IO ()
 rustBuildHook pkg_descr lbi hooks flags = do
   putStrLn "Building Rust code..."
+  let isRelease = withProfLib lbi
   let cargoArgs = if isRelease then ["build", "--release"] else ["build"]
   rawSystemExit (fromFlag $ buildVerbosity flags) "cargo" cargoArgs
-  createHSLink
   putStrLn "Build Rust code success!"
   buildHook simpleUserHooks pkg_descr lbi hooks flags
-  where
-    createHSLink = do
-      dir <- getLibDir isRelease
-      ghcVersion <- init <$> readProcess "ghc" ["--numeric-version"] ""
-      let srcPath = dir ++ "/libopendal_hs." ++ getDynamicLibExtension lbi
-      let destPath = dir ++ "/libopendal_hs-ghc" ++ ghcVersion ++ "." ++ getDynamicLibExtension lbi
-      exist <- doesFileExist destPath
-      when (not exist) $ createFileLink srcPath destPath
-    isRelease = withProfLib lbi
 
 getLibDir :: Bool -> IO String
 getLibDir isRelease = do
   cargoPath <- readProcess "cargo" ["locate-project", "--workspace", "--message-format=plain"] ""
   let dir = take (length cargoPath - 11) cargoPath -- <dir>/Cargo.toml -> <dir>
   let targetDir = if isRelease then "release" else "debug"
-  return $ dir ++ "/target/" ++ targetDir
+  return $ dir ++ "target/" ++ targetDir
 
 getDynamicLibExtension :: LocalBuildInfo -> String
 getDynamicLibExtension lbi =