#15938: Hadrian's recompilation check is extremely slow -------------------------------------+------------------------------------- Reporter: bgamari | Owner: alpmestan Type: bug | Status: patch Priority: high | Milestone: 8.8.1 Component: Build System | Version: 8.6.2 (Hadrian) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D5412, Wiki Page: | Phab:D5422 -------------------------------------+------------------------------------- Comment (by alpmestan): Both D5412 and D5422 have landed on master. When I now resume builds that I stopped while building base (`_build/stage1/libraries/base/*`), hadrian gets back to work pretty quickly on my machine, never above 5 seconds for sure, and it seems to me it's back on track within 2-3 seconds in general now. Is this acceptable? Can we consider this problem solved and close the ticket? (We might want to get rid of the only big rule enumeration we have left -- the ones for generated files, `Rules.Generate` -- but I'd say it's not worth the trouble right now. The impact would quite likely be minor, while requiring some non trivial effort.) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15938#comment:40 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler