Adds integration test for #3396

test/integration/tests/3396-package-indices/Main.hs

@@ -0,0 +1,11 @@
+import           StackTest
+import           System.Directory   (createDirectory)
+import           System.Environment (getEnv)
+import           System.FilePath    ((</>))
+
+main :: IO ()
+main = do
+  home <- getEnv "HOME"
+  createDirectory (home </> ".stack" </> "indices" </> "CustomIndex")
+  copy "CustomIndex/01-index.tar" (home </> ".stack"  </> "indices" </> "CustomIndex" </> "01-index.tar")
+  stack ["build"]

test/integration/tests/3396-package-indices/files/files.cabal

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+name:                files
+version:             0.1.0.0
+-- synopsis:
+-- description:
+homepage:            https://github.com/githubuser/files#readme
+license:             BSD3
+author:              Author name here
+maintainer:          [email protected]
+copyright:           2017 Author name here
+category:            Web
+build-type:          Simple
+cabal-version:       >=1.10
+
+library
+  hs-source-dirs:      src
+  exposed-modules:     Lib
+  build-depends:       base >= 4.7 && < 5
+  default-language:    Haskell2010
+

test/integration/tests/3396-package-indices/files/my-snapshot.yaml

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+compiler: ghc-8.0.2
+name: my-snapshot
+
+packages:
+  - base-4.10.0.0
+  - dinamo-0.1.0.0
+
+flags:
+  dinamo:
+    debug: true
+

test/integration/tests/3396-package-indices/files/src/Lib.hs

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+module Lib
+    ( someFunc
+    ) where
+
+
+someFunc :: IO ()
+someFunc = print "some func"
+

test/integration/tests/3396-package-indices/files/stack.yaml

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+resolver: my-snapshot.yaml
+
+packages:
+- .
+
+extra-deps: []
+
+# Override default flag values for local packages and extra-deps
+flags: {}
+
+# Extra package databases containing global packages
+extra-package-dbs: []
+
+package-indices:
+  - name: CustomIndex
+    download-prefix: http://0.0.0.0:8080/
+    http: http://0.0.0.0:8080/custom.index.tar.gz
+