diff options
Diffstat (limited to 'gnu/packages/patches/ghc-diff-swap-cover-args.patch')
| -rw-r--r-- | gnu/packages/patches/ghc-diff-swap-cover-args.patch | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gnu/packages/patches/ghc-diff-swap-cover-args.patch b/gnu/packages/patches/ghc-diff-swap-cover-args.patch new file mode 100644 index 0000000000..724416ff7a --- /dev/null +++ b/gnu/packages/patches/ghc-diff-swap-cover-args.patch @@ -0,0 +1,20 @@ +The QuickCheck library swapped the order of the arguments of the 'cover' +function in version 2.12. Version 0.3.4 of the Diff library still uses +the old argument order. Swapping the argument order makes Diff work +with newer versions of QuickCheck. + +See <https://github.com/commercialhaskell/stackage/issues/4289> for the +upstream bug report. + +diff -ruN a/test/Test.hs b/test/Test.hs +--- a/test/Test.hs 2016-04-23 01:21:45.000000000 -0400 ++++ b/test/Test.hs 2019-11-01 19:13:04.590770903 -0400 +@@ -134,7 +134,7 @@ + prop_ppDiffR (DiffInput le ri) = + let haskDiff=ppDiff $ getGroupedDiff le ri + utilDiff= unsafePerformIO (runDiff (unlines le) (unlines ri)) +- in cover (haskDiff == utilDiff) 90 "exact match" $ ++ in cover 90 (haskDiff == utilDiff) "exact match" $ + classify (haskDiff == utilDiff) "exact match" + (div ((length haskDiff)*100) (length utilDiff) < 110) -- less than 10% bigger + where |