#10134: Pattern Matching Causes Infinite Type Error -------------------------------------+------------------------------------- Reporter: dongen | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.4 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by simonpj): But `clash-0.1.3.11` does not include a module called `CLaSH.Prelude`. You say "You must build this with _clash_, which is built on top of ghc". Can you give a sequence of steps to achieve that? From what I can see clash has a huge dependency list {{{ build-depends: ghc >= 6.12 && < 6.13, pretty >= 1.0.1.1 && < 1.1, vhdl >= 0.1.2.1 && < 0.2, haskell98 >= 1.0.1.1 && < 1.1, data-accessor >= 0.2.1.3 && < 2.3, containers >= 0.3 && < 0.4, base >= 4.2 && < 4.3, transformers >= 0.2 && < 0.3, filepath >= 1.1.0.4 && < 1.2, template-haskell >= 2.4.0.1 && < 2.5, data-accessor-template >= 0.2.1.8 && < 0.3, prettyclass >= 1.0 && < 1.1, directory >= 1.0 && < 1.1, tfp >= 0.2 && < 0.4, th-lift >= 0.5.4 && < 0.6, time >= 1.1.4 && < 1.2, utility-ht < 0.0.7 }}} I'm having a hard time believing that installing vhdl (which sounds like a big deal) is crucial to demonstrating the problem. Maybe instead of copying the definition for `Vec` into `Dummy`, make a separate module `Clash.Stubs`, and populate it with the stuff that `Dummy` needs? Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10134#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler