[GHC] #8917: :kind! does not work under type constructors
#8917: :kind! does not work under type constructors ------------------------------------+------------------------------------- Reporter: goldfire | Owner: goldfire Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.8.1-rc2 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- Say I have the following: {{{ {-# LANGUAGE DataKinds, PolyKinds, TypeFamilies #-} module Scratch where data Nat = Zero | Succ Nat type family a + b where Zero + a = a (Succ n) + m = Succ (n + m) }}} I load this into ghci. See what happens next: {{{ GHCi, version 7.8.0.20140228: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. [1 of 1] Compiling Scratch ( Scratch.hs, interpreted ) Ok, modules loaded: Scratch. *Scratch> :kind! Zero + Succ Zero Zero + Succ Zero :: Nat = 'Succ 'Zero *Scratch> :kind! Succ (Zero + Zero) Succ (Zero + Zero) :: Nat = 'Succ ('Zero + 'Zero) }}} Note the last line. It doesn't reduce under the `Succ`! I will fix shortly. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8917 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#8917: :kind! does not work under type constructors
-------------------------------------+------------------------------------
Reporter: goldfire | Owner: goldfire
Type: bug | Status: new
Priority: normal | Milestone: 7.8.1
Component: Compiler | Version: 7.8.1-rc2
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture: Unknown/Multiple
Type of failure: None/Unknown | Difficulty: Unknown
Test Case: | Blocked By:
Blocking: | Related Tickets:
-------------------------------------+------------------------------------
Comment (by Richard Eisenberg
#8917: :kind! does not work under type constructors
-------------------------------------+------------------------------------
Reporter: goldfire | Owner: goldfire
Type: bug | Status: new
Priority: normal | Milestone: 7.8.1
Component: Compiler | Version: 7.8.1-rc2
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture: Unknown/Multiple
Type of failure: None/Unknown | Difficulty: Unknown
Test Case: | Blocked By:
Blocking: | Related Tickets:
-------------------------------------+------------------------------------
Comment (by Richard Eisenberg
#8917: :kind! does not work under type constructors -------------------------------------+------------------------------------ Reporter: goldfire | Owner: goldfire Type: bug | Status: merge Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.8.1-rc2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Changes (by thoughtpolice): * status: new => merge -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8917#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#8917: :kind! does not work under type constructors ---------------------------------------+----------------------------------- Reporter: goldfire | Owner: goldfire Type: bug | Status: merge Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.8.1-rc2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Test Case: ghci/scripts/T8917 | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: ---------------------------------------+----------------------------------- Changes (by goldfire): * testcase: => ghci/scripts/T8917 Comment: Yes, please merge. I conjecture that there are other ways to exhibit the bug fixed in this ticket without using ghci. Thanks! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8917#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#8917: :kind! does not work under type constructors ---------------------------------------+----------------------------------- Reporter: goldfire | Owner: goldfire Type: bug | Status: closed Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.8.1-rc2 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Test Case: ghci/scripts/T8917 | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: ---------------------------------------+----------------------------------- Changes (by thoughtpolice): * status: merge => closed * resolution: => fixed Comment: Merged in 7.8, thanks! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8917#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
participants (1)
-
GHC