#14571: RFE: Make template-haskell cabal package require a specific version of GHC ----------------------------------------+--------------------------- Reporter: atodorov | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: Template Haskell | Version: 8.0.2 Keywords: | Operating System: Linux Architecture: Unknown/Multiple | Type of failure: Other Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: ----------------------------------------+--------------------------- Following a conversation on another bug tracker: https://github.com/bos/math-functions/issues/52 it looks like template-haskell is very dependent on the version of GHC being used (although the test matrix is all green at present). In the above case we're trying to use template-haskell 2.12.0.0 with GHC 8.0.2 to build another package and that fails. One of the problems is that on Fedora template-haskell is shipped separately from GHC while on Debian or with source installations it comes bundled with GHC. Is it possible to specify a requirement on the GHC version inside .cabal files? This will make it easier to track down why something isn't able to compile. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14571 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler