Adjust haddock module hiding

.github/workflows/haddock.yml

@@ -31,8 +31,7 @@ jobs:
       shell: bash
       run: |
         shopt -s globstar && \
-        shopt -s extglob && \
-        stack exec haddock -- ./src/**/!(Internal)/*.hs --html --odir docs
+        stack exec haddock -- ./src/**/*.hs $(for m in src/**/Internal/*.hs; do echo -n " --hide  $m" | sed -r -e 's|/|.|g' -e 's|.src.||' -e 's|.hs||'; done) --html --odir docs
 
     - name: Upload artifact
       uses: actions/upload-pages-artifact@v2