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| author | ilovezfs | 2016-02-14 01:55:02 -0800 |
|---|---|---|
| committer | Mike McQuaid | 2016-02-21 18:40:36 +0000 |
| commit | 6a1a57423b6251ffa082f412d090bd2a1cb7fe95 (patch) | |
| tree | b1dc2807580120623e505d5e219d4d87f001c69c | |
| parent | 2517d396aa66e6a89ff84ce7573f8fa2397619d4 (diff) | |
| download | brew-6a1a57423b6251ffa082f412d090bd2a1cb7fe95.tar.bz2 | |
Haskell#cabal_install more robust deps resolution
The default max-backjumps can be too low, especially since
Language::Haskell::Cabal doesn't guarantee an LTS config.
In particular, this fixes a git-annex build failure in Homebrew/homebrew#47950
Closes Homebrew/homebrew#49158.
Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
| -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) |