Adding a guix file to work on the local copy

guix.scm

-(use-modules ((guix gexp) #:select (local-file))
+(use-modules ((gnu packages haskell-web) #:select (ghc-aeson))
+             ((guix gexp) #:select (local-file))
              ((guix git-download) #:select (git-predicate))
              ((guix build-system haskell) #:select (haskell-build-system))
              ((guix licenses) #:select (gpl3))
@@ -14,7 +15,7 @@
                   #:recursive? #t
                   #:select? (git-predicate %source-dir)))
     (build-system haskell-build-system)
-    (inputs (list))
+    (inputs (list ghc-aeson))
     (home-page "https://gitlab.liris.cnrs.fr/abrenon/takkyuu")
     (synopsis "A library to connect text analyzers bidirectionally")
     (description "")