#11725: Performance Regression from 7.8.3 to 7.10.3 -------------------------------------+------------------------------------- Reporter: dominic | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.3 Resolution: | Keywords: Operating System: Linux | Architecture: Type of failure: Runtime | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by dominic): It's entirely possible that this has been solved in 8.0.1 so I have built this compiler on OS X 10.11.3. At the moment I can't build one of the packages on which my example depends {{{ ~/Dropbox/Private/Random8 $ ~/Library/Haskell/ghc-7.10.3/lib/cabal- install-1.25.0.0/bin/cabal install flexible-defaults --constraint ="template-haskell==2.11.0.0" --with-ghc=/Users/dom/ghc/inplace/bin/ghc- stage2 ~/Library/Haskell/ghc-7.10.3/lib/cabal-install-1.25.0.0/bin/cabal install flexible-defaults --constraint="template-haskell==2.11.0.0" --with- ghc=/Users/dom/ghc/inplace/bin/ghc-stage2 Resolving dependencies... cabal: Entering directory '/var/folders/3p/m593dprn5snbjz6sc45c77f80000gn/T/cabal-tmp-99610 /flexible-defaults-0.0.0.2' Configuring flexible-defaults-0.0.0.2... Building flexible-defaults-0.0.0.2... Preprocessing library flexible-defaults-0.0.0.2... [1 of 3] Compiling Language.Haskell.TH.FlexibleDefaults.Solve ( src/Language/Haskell/TH/FlexibleDefaults/Solve.hs, dist/dist-sandbox- 59d6d2c7/build/Language/Haskell/TH/FlexibleDefaults/Solve.o ) src/Language/Haskell/TH/FlexibleDefaults/Solve.hs:13:1: warning: The import of ‘Data.Monoid’ is redundant except perhaps to import instances from ‘Data.Monoid’ To import instances alone, use: import Data.Monoid() [2 of 3] Compiling Language.Haskell.TH.FlexibleDefaults.DSL ( src/Language/Haskell/TH/FlexibleDefaults/DSL.hs, dist/dist-sandbox- 59d6d2c7/build/Language/Haskell/TH/FlexibleDefaults/DSL.o ) src/Language/Haskell/TH/FlexibleDefaults/DSL.hs:79:82: error: Not in scope: type constructor or class ‘InlineSpec’ src/Language/Haskell/TH/FlexibleDefaults/DSL.hs:90:32: error: Not in scope: type constructor or class ‘InlineSpec’ src/Language/Haskell/TH/FlexibleDefaults/DSL.hs:121:14: error: Not in scope: type constructor or class ‘InlineSpec’ cabal: Leaving directory '/var/folders/3p/m593dprn5snbjz6sc45c77f80000gn/T /cabal-tmp-99610/flexible-defaults-0.0.0.2' Failed to install flexible-defaults-0.0.0.2 cabal: Error: some packages failed to install: flexible-defaults-0.0.0.2 failed during the building phase. The exception was: ExitFailure 1 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11725#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler