Failing test-case for #3460.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>

cabal-install/cabal-install.cabal

@@ -77,6 +77,17 @@ Extra-Source-Files:
   tests/IntegrationTests/multiple-source/p/p.cabal
   tests/IntegrationTests/multiple-source/q/Setup.hs
   tests/IntegrationTests/multiple-source/q/q.cabal
+  tests/IntegrationTests/new-build/T3460.sh
+  tests/IntegrationTests/new-build/T3460/C.hs
+  tests/IntegrationTests/new-build/T3460/Setup.hs
+  tests/IntegrationTests/new-build/T3460/T3460.cabal
+  tests/IntegrationTests/new-build/T3460/cabal.project
+  tests/IntegrationTests/new-build/T3460/sub-package-A/A.hs
+  tests/IntegrationTests/new-build/T3460/sub-package-A/Setup.hs
+  tests/IntegrationTests/new-build/T3460/sub-package-A/sub-package-A.cabal
+  tests/IntegrationTests/new-build/T3460/sub-package-B/B.hs
+  tests/IntegrationTests/new-build/T3460/sub-package-B/Setup.hs
+  tests/IntegrationTests/new-build/T3460/sub-package-B/sub-package-B.cabal
   tests/IntegrationTests/new-build/monitor_cabal_files.sh
   tests/IntegrationTests/new-build/monitor_cabal_files/cabal.project
   tests/IntegrationTests/new-build/monitor_cabal_files/p/P.hs

cabal-install/tests/IntegrationTests/new-build/T3460.sh

+. ./common.sh
+cd T3460
+cabal new-build -j T3460

cabal-install/tests/IntegrationTests/new-build/T3460/C.hs

+module C where
+import A
+import B

cabal-install/tests/IntegrationTests/new-build/T3460/Setup.hs

+import Distribution.Simple
+main = defaultMain

cabal-install/tests/IntegrationTests/new-build/T3460/T3460.cabal

+-- Initial T3460.cabal generated by cabal init.  For further documentation,
+--  see http://haskell.org/cabal/users-guide/
+
+name:                T3460
+version:             0.1.0.0
+-- synopsis:            
+-- description:         
+license:             BSD3
+author:              Edward Z. Yang
+maintainer:          ezyang@cs.stanford.edu
+-- copyright:           
+-- category:            
+build-type:          Simple
+cabal-version:       >=1.10
+
+library
+  exposed-modules:     C
+  -- other-modules:       
+  -- other-extensions:    
+  build-depends:       base, sub-package-A, sub-package-B
+  -- hs-source-dirs:      
+  default-language:    Haskell2010

cabal-install/tests/IntegrationTests/new-build/T3460/cabal.project

+packages: ./T3460.cabal
+        , ./sub-package-A
+        , ./sub-package-B

cabal-install/tests/IntegrationTests/new-build/T3460/sub-package-A/A.hs

+module A where

cabal-install/tests/IntegrationTests/new-build/T3460/sub-package-A/Setup.hs

+import Distribution.Simple
+main = defaultMain

cabal-install/tests/IntegrationTests/new-build/T3460/sub-package-A/sub-package-A.cabal

+-- Initial sub-package-A.cabal generated by cabal init.  For further 
+-- documentation, see http://haskell.org/cabal/users-guide/
+
+name:                sub-package-A
+version:             0.1.0.0
+-- synopsis:            
+-- description:         
+license:             BSD3
+author:              Edward Z. Yang
+maintainer:          ezyang@cs.stanford.edu
+-- copyright:           
+-- category:            
+build-type:          Simple
+cabal-version:       >=1.10
+
+library
+  exposed-modules:     A
+  -- other-modules:       
+  -- other-extensions:    
+  build-depends:       base
+  -- hs-source-dirs:      
+  default-language:    Haskell2010

cabal-install/tests/IntegrationTests/new-build/T3460/sub-package-B/B.hs

+module B where

cabal-install/tests/IntegrationTests/new-build/T3460/sub-package-B/Setup.hs

+import Distribution.Simple
+main = defaultMain

cabal-install/tests/IntegrationTests/new-build/T3460/sub-package-B/sub-package-B.cabal

+-- Initial sub-package-B.cabal generated by cabal init.  For further 
+-- documentation, see http://haskell.org/cabal/users-guide/
+
+name:                sub-package-B
+version:             0.1.0.0
+-- synopsis:            
+-- description:         
+license:             BSD3
+author:              Edward Z. Yang
+maintainer:          ezyang@cs.stanford.edu
+-- copyright:           
+-- category:            
+build-type:          Simple
+cabal-version:       >=1.10
+
+library
+  exposed-modules:     B
+  -- other-modules:       
+  -- other-extensions:    
+  build-depends:       base
+  -- hs-source-dirs:      
+  default-language:    Haskell2010