clipboard: Don't grab std{err,out}

For some reason it was breaking System.Timeout.timeout

CHANGELOG.md

@@ -6,6 +6,7 @@
   * Try `nix-tree nixpkgs#hello'
 * change: `nix-tree` now requires an explicit `--derivation` flag to work on store derivations rather than their outputs.
   * This is to be more consistent `nix path-info`.
+* fix: Fix timeout when running external command for the 'yank' functionality (issue: [#25][])
 
 [#27]: https://github.com/utdemir/nix-tree/issues/27
 

src/NixTree/Clipboard.hs

@@ -20,21 +20,13 @@ runCmd :: Text -> (FilePath, [String]) -> IO (Either Text ())
 runCmd txt (cmd, args) =
   P.proc (toString cmd) (map toString args)
     & P.setStdin (P.byteStringInput $ encodeUtf8 txt)
-    & P.readProcess
+    & P.runProcess
     & timeout 1_000_000
     & try
     <&> \case
-      Right (Just (ExitSuccess, _, _)) -> Right ()
-      Right (Just (ExitFailure e, out, err)) ->
-        Left $
-          "failed with exit code "
-            <> show e
-            <> ", "
-            <> "stdout: "
-            <> decodeUtf8 (toStrict out)
-            <> ", "
-            <> "stderr: "
-            <> decodeUtf8 (toStrict err)
+      Right (Just ExitSuccess) -> Right ()
+      Right (Just (ExitFailure e)) ->
+        Left $ "failed with exit code " <> show e
       Right Nothing ->
         Left $ "timed out"
       Left (ex :: SomeException) ->