[flake] hspec/Main.hs fixes, but still coverage report doesn't work

flake.nix

@@ -697,7 +697,7 @@
               # cabal.project.flake must be in the same directory than the original cabal.project
               # for the relative paths in the packages stanza to point to the correct subdirs.
               shellHook = ''
-                export GARGANTEXT_START_CORENLP="nix run .#coreNLP"
+                export GARGANTEXT_CORENLP_SERVER="nix run .#coreNLP"
                 ln -sf ${pkgs.runCommandLocal "cabal.project" {
                       nativeBuildInputs = with pkgs; [ gawk ];
                     }

test/drivers/hspec/Main.hs

@@ -8,6 +8,7 @@ import Control.Monad
 import Data.Text (isInfixOf)
 import Shelly hiding (FilePath)
 import System.IO
+import System.Environment (lookupEnv)
 import System.Process
 import Test.Hspec
 import qualified Data.Text as T
@@ -21,12 +22,14 @@ startCoreNLPServer = do
   -- Make the CoreNLP server configurable by an envvar, eg. set by nix develop
   startServer <- lookupEnv "GARGANTEXT_CORENLP_SERVER"
   let p = proc (fromMaybe "./startServer.sh" <$> startServer) []
-  (_, _, _, hdl) <- (createProcess $ p { cwd = maybe (Just "devops/coreNLP/stanford-corenlp-current") Nothing startServer
-                    , delegate_ctlc = True
-                    , create_group = True
-                    , std_out = UseHandle devNull
-                    , std_err = UseHandle devNull
-                    }) `catch` \e -> case e of
+  -- let cwd = fromMaybe "/devops/coreNLP/stanford-corenlp-current" startServer
+  let cwd = Nothing
+  (_, _, _, hdl) <- (createProcess $ p { cwd = cwd
+                                       , delegate_ctlc = True
+                                       , create_group = True
+                                       , std_out = UseHandle devNull
+                                       , std_err = UseHandle devNull
+                                       }) `catch` \e -> case e of
                                            _ | True <- "does not exist" `isInfixOf` (T.pack . show @SomeException $ e)
                                              -> fail $ "Cannot execute the 'startServer.sh' script. If this is the " <>
                                                        "first time you are running the tests, you have to run " <>