@@ -13841,3 +13841,30 @@ what you can do with Control.Lens.Cons.")
(synopsis "Law-abiding lenses for aeson")
(description "Law-abiding lenses for aeson")
(license license:expat)))
+
+(define-public ghc-placeholders
+ (package
+ (name "ghc-placeholders")
+ (version "0.1")
+ (source
+ (origin
+ (method url-fetch)
+ (uri (string-append
+ "https://hackage.haskell.org/package/placeholders/placeholders-"
+ version
+ ".tar.gz"))
+ (sha256
+ (base32
+ "0ih35n2pw5gr9ggj2xz5zfcs4bdk200fdw6q9hdy3xna7maphak5"))))
+ (build-system haskell-build-system)
+ (home-page
+ "http://github.com/ahammar/placeholders")
+ (synopsis
+ "Placeholders for use while developing Haskell code")
+ (description
+ "While working on some Haskell code, it is often useful to work
+incrementally by inserting undefined as a placeholder for missing code.
+This library provides placeholders that produce better messages when
+evaluated at run-time and also generate compile-time warnings so that
+they do not get forgotten so easily.")
+ (license license:bsd-3)))