diff --git a/pkgs/development/haskell-modules/generic-stack-builder.nix b/pkgs/development/haskell-modules/generic-stack-builder.nix
index 09bd38ccc93..c7cfbef7d13 100644
--- a/pkgs/development/haskell-modules/generic-stack-builder.nix
+++ b/pkgs/development/haskell-modules/generic-stack-builder.nix
@@ -19,12 +19,13 @@ stdenv.mkDerivation (args // {
   STACK_PLATFORM_VARIANT="nix";
   STACK_IN_NIX_SHELL=1;
   STACK_IN_NIX_EXTRA_ARGS =
-    concatMap (pkg: ["--extra-lib-dirs=${pkg}/lib"
-                     "--extra-include-dirs=${pkg}/include"]) buildInputs ++
+    concatMap (pkg: ["--extra-lib-dirs=${getLib pkg}/lib"
+                     "--extra-include-dirs=${getDev pkg}/include"]) buildInputs ++
     extraArgs;
 
   # XXX: workaround for https://ghc.haskell.org/trac/ghc/ticket/11042.
   LD_LIBRARY_PATH = makeLibraryPath (LD_LIBRARY_PATH ++ buildInputs);
+                    # ^^^ Internally uses `getOutput "lib"` (equiv. to getLib)
 
   preferLocalBuild = true;