hackage-meta: some scripts for filling out missing bounds

scripts/diff.hs

@@ -0,0 +1,11 @@
+import Data.Tuple
+import System.FilePath
+import System.Environment
+import System.Process
+
+main = do
+  vs <- lines <$> getContents
+  [pkg, dir] <- getArgs
+  mapM_ system $ map (\(v1, v2) -> "diff -u --color=always " ++ file pkg dir v1 ++ " " ++ file pkg dir v2 ++ "; echo; echo; echo") $ map swap $ drop 1 vs `zip` vs
+ where
+   file pkg dir v = dir </> (pkg ++ "-" ++ v) <.> "cabal"