Hi, Am Dienstag, den 29.03.2016, 15:29 -0700 schrieb Edward Z. Yang: > This ticket may be of interest: > > https://ghc.haskell.org/trac/ghc/ticket/9630 > > Deriving costs a lot and we just need someone to figure out what's > going on.
are you sure that deriving itself costs a lot? I would expect that deriving itself is reasonably cheap, but results in a lot of complicated (e.g. recursive) code that later analyzes have to go through... http://ghc.haskell.org/trac/ghc/ticket/9557 and tickets linked from there are also relevant. In fact, there is even a keyword for this meta-issue: https://ghc.haskell.org/trac/ghc/query?status=!closed&keywords=~deriving-perf Greetings, Joachim -- Joachim “nomeata” Breitner m...@joachim-breitner.de • https://www.joachim-breitner.de/ XMPP: nome...@joachim-breitner.de • OpenPGP-Key: 0xF0FBF51F Debian Developer: nome...@debian.org
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