Add a build-tool-depends section to package.yaml

hnix.cabal

@@ -2,7 +2,7 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: a731c780e3c32f87f1cbb05127ac46ce527454d8a3c7aecadbb0ae14280de93c
+-- hash: a8f221d87a80d4417a065328cc42b341dadcff4109d2ab26f7ee94fdd2c395e4
 
 name:           hnix
 version:        0.5.1
@@ -682,6 +682,7 @@ test-suite hnix-tests
   else
     buildable: True
   default-language: Haskell2010
+  build-tool-depends: hspec-discover:hspec-discover == 2.*
 
 benchmark hnix-benchmarks
   type: exitcode-stdio-1.0

package.yaml

@@ -171,6 +171,9 @@ tests:
     source-dirs: tests
     main: Main.hs
     ghc-options: -threaded
+    verbatim:
+      build-tool-depends:
+        hspec-discover:hspec-discover == 2.*
     dependencies:
       - hnix
       - Glob