diff options
Diffstat (limited to 'Library')
| -rw-r--r-- | Library/Homebrew/language/haskell.rb | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/Library/Homebrew/language/haskell.rb b/Library/Homebrew/language/haskell.rb index dd9bc5bc8..9928b6322 100644 --- a/Library/Homebrew/language/haskell.rb +++ b/Library/Homebrew/language/haskell.rb @@ -45,7 +45,13 @@ module Language end def cabal_install(*args) - system "cabal", "install", "--jobs=#{ENV.make_jobs}", *args + # cabal-install's dependency-resolution backtracking strategy can easily + # need more than the default 2,000 maximum number of "backjumps," since + # Hackage is a fast-moving, rolling-release target. The highest known + # needed value by a formula at this time (February 2016) was 43,478 for + # git-annex, so 100,000 should be enough to avoid most gratuitous + # backjumps build failures. + system "cabal", "install", "--jobs=#{ENV.make_jobs}", "--max-backjumps=100000", *args end def cabal_install_tools(*tools) |