Merge pull request #6436 from phadej/issue-6013

Resolve #6013: Warn if packages and optional-packages are both empty
haskell · Dec 15, 2019 · b3c7982 · b3c7982
2 parents 65522af + 4e6128b
commit b3c7982
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/cabal-install/Distribution/Client/ProjectOrchestration.hs b/cabal-install/Distribution/Client/ProjectOrchestration.hs
@@ -222,6 +222,10 @@ establishProjectBaseContext verbosity cliConfig currentCommand = do
                           verbosity cabalDirLayout
                           projectConfig
 
+    -- https://github.com/haskell/cabal/issues/6013
+    when (null (projectPackages projectConfig) && null (projectPackagesOptional projectConfig)) $
+        warn verbosity "There are no packages or optional-packages in the project"
+
     return ProjectBaseContext {
       distDirLayout,
       cabalDirLayout,