maintainer-feedback requested: [Bug 244217] lang/ghc fails in the configure phase while building using poudriere on 12-stable

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Bugzilla Automation <bugzilla at FreeBSD.org> has asked freebsd-haskell mailing
list <haskell at FreeBSD.org> for maintainer-feedback:
Bug 244217: lang/ghc fails in the configure phase while building using
poudriere on 12-stable
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244217



--- Description ---
The port lang/ghc fails to build for me at the configure stage on my 12-stable
system. With the current ports tree: https://svn.freebsd.org/ports/head@526465.
I have attached the poudriere build log if that helps.

Below is the error i receive:

x hscolour-1.24.4/Language/Haskell/HsColour/MIRC.hs
x hscolour-1.24.4/Language/Haskell/HsColour/Options.hs
x hscolour-1.24.4/Language/Haskell/HsColour/Output.hs
x hscolour-1.24.4/Language/Haskell/HsColour/TTY.hs
x hscolour-1.24.4/data/
x hscolour-1.24.4/data/rgb24-example-.hscolour
[1 of 1] Compiling Main 	    ( Setup.hs, Setup.o )
Linking Setup ...
Setup: No cabal file found.
Please create a package description file <pkgname>.cabal
*** Error code 1

Stop.
make: stopped in /usr/ports/lang/ghc
=>> Cleaning up wrkdir
===>  Cleaning for ghc-8.6.5_3
build of lang/ghc | ghc-8.6.5_3 ended at Tue Feb 18 12:07:50 EST 2020
build time: 00:00:52
!!! build failure encountered !!!