Clean removes generated docs

CHANGELOG_NEXT.md

@@ -254,4 +254,5 @@ This CHANGELOG describes the merged but unreleased changes. Please see [CHANGELO
 
 #### Documentation
 
-* Module docstrings are now displayed for namespace indexes when documentation is built via --mkdoc.
+* Module docstrings are now displayed for namespace indexes when documentation is built via `--mkdoc`.
+* Generated documentation are now removed via `--clean`.

src/Idris/Package.idr

@@ -843,6 +843,10 @@ clean pkg opts -- `opts` is not used but might be in the future
          deleteFolder builddir []
          maybe (pure ()) (\e => delete (outputdir </> e))
                (executable pkg)
+         -- clean out the generated docs
+         let build = build_dir (dirs (options defs))
+         deleteDocsFolder $ build </> "docs" </> "docs"
+         deleteDocsFolder $ build </> "docs"
          runScript (postclean pkg)
   where
     delete : String -> Core ()
@@ -859,6 +863,14 @@ clean pkg opts -- `opts` is not used but might be in the future
              delete $ ttFile <.> "ttc"
              delete $ ttFile <.> "ttm"
 
+    deleteDocsFolder : String -> Core ()
+    deleteDocsFolder dir
+        = do Right docbasefiles <- coreLift $ listDir dir
+               | Left err => pure ()
+             traverse_ (\x => delete $ dir </> x)
+                       docbasefiles
+             deleteFolder dir []
+
 -- Just load the given module, if it exists, which will involve building
 -- it if necessary
 runRepl : {auto c : Ref Ctxt Defs} ->