Add a test for #3199.

cabal-install/tests/IntegrationTests/regression/common.sh

@@ -0,0 +1,9 @@
+# Helper to run Cabal
+cabal() {
+    "$CABAL" $CABAL_ARGS "$@"
+}
+
+die() {
+    echo "die: $@"
+    exit 1
+}

cabal-install/tests/IntegrationTests/regression/t3199.sh

@@ -0,0 +1,9 @@
+. ./common.sh
+
+if [[ `ghc --numeric-version` =~ "7\\." ]]; then
+    cd t3199
+    cabal sandbox init
+    cabal sandbox add-source ../../../../../Cabal
+    cabal install --package-db=clear --package-db=global --only-dep --dry-run \
+        | grep -q Cabal || die "Should've installed Cabal"
+fi

cabal-install/tests/IntegrationTests/regression/t3199/Main.hs

@@ -0,0 +1,4 @@
+module Main where
+
+main :: IO ()
+main = putStrLn "Hello, Haskell!"

cabal-install/tests/IntegrationTests/regression/t3199/Setup.hs

@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain

cabal-install/tests/IntegrationTests/regression/t3199/test-3199.cabal

@@ -0,0 +1,27 @@
+name:                test-t3199
+version:             0.1.0.0
+license:             BSD3
+author:              Mikhail Glushenkov
+maintainer:          [email protected]
+category:            Test
+build-type:          Custom
+cabal-version:       >=1.10
+
+flag exe_2
+     description: Build second exe
+     default:     False
+
+executable test-3199-1
+  main-is:             Main.hs
+  build-depends:       base
+  default-language:    Haskell2010
+
+executable test-3199-2
+  main-is:             Main.hs
+  build-depends:       base, ansi-terminal
+  default-language:    Haskell2010
+
+  if flag(exe_2)
+     buildable: True
+  else
+     buildable: False