Harmonise haskell package naming

loom/packages/sjw.scm

@@ -12,9 +12,9 @@
   #:use-module ((guix packages)
                 #:select (base32 origin package search-path-specification)))
 
-(define-public sjw
+(define-public ghc-sjw
   (package
-    (name "sjw")
+    (name "ghc-sjw")
     (version "0.1.3.1")
     (home-page "https://git.marvid.fr/Tissevert/SJW")
     (source (origin
@@ -41,6 +41,11 @@
      resulting script.")
     (license gpl3+)))
 
+(define-public sjw
+  (package
+    (inherit ghc-sjw)
+    (name "sjw")))
+
 (define-public sjw-unitjs
   (package
     (name "sjw-unitjs")