Reproduction of the problem setup, tweag#10.

.gitignore

@@ -1 +1,4 @@
 /bazel-*
+.stack*
+__build
+dist-newstyle

tutorial/defaults.dhall

@@ -0,0 +1,9 @@
+{ version =
+    "1.0.0"
+, author =
+    "Joe Bloggs"
+, ghc-options =
+    [ "-Wall" ]
+, dependencies =
+    [ "base >=4 && <5" ]
+}

tutorial/package.dhall

@@ -0,0 +1,24 @@
+    let defs = ./defaults.dhall
+
+in    defs
+    ⫽ { name =
+          "tutorial"
+      , synopsis =
+          "."
+      , description =
+          "."
+      , library =
+          { source-dirs = "lib", exposed-modules = "Bool" }
+      , executables =
+          { demorgans =
+              { dependencies =
+                  "tutorial"
+              , ghc-options =
+                  [ "-rtsopts", "-threaded", "-with-rtsopts=-N" ]
+              , main =
+                  "Main.hs"
+              , source-dirs =
+                  "main"
+              }
+          }
+      }

tutorial/stack-dhall.yaml

@@ -0,0 +1,11 @@
+resolver: lts-12.5
+flags: {}
+packages: []
+extra-deps:
+- dhall-1.16.1
+- hpack-dhall-0.3.0
+- dhall-nix-1.1.5
+- hnix-0.5.2
+- serialise-0.2.0.0
+local-bin-path: __build
+work-dir: .stack-work-dhall

tutorial/stack.yaml

@@ -0,0 +1,4 @@
+resolver: lts-11.22
+packages:
+- .
+local-bin-path: __build

tutorial/tutorial.cabal

@@ -0,0 +1,37 @@
+-- This file has been generated from package.dhall by hpack version 0.28.2.
+--
+-- see: https://github.com/sol/hpack
+--
+-- hash: 67eb8899e129cded87a996c578992445eef8a1cda2f7a63e59094bf6a3a20a6c
+
+name:           tutorial
+version:        1.0.0
+synopsis:       .
+description:    .
+author:         Joe Bloggs
+build-type:     Simple
+cabal-version:  >= 1.10
+
+library
+  exposed-modules:
+      Bool
+  other-modules:
+      Paths_tutorial
+  hs-source-dirs:
+      lib
+  ghc-options: -Wall
+  build-depends:
+      base >=4 && <5
+  default-language: Haskell2010
+
+executable demorgans
+  main-is: Main.hs
+  other-modules:
+      Paths_tutorial
+  hs-source-dirs:
+      main
+  ghc-options: -Wall -rtsopts -threaded -with-rtsopts=-N
+  build-depends:
+      base >=4 && <5
+    , tutorial
+  default-language: Haskell2010