record-dot-preprocessor: Dependencies are missed

[hololeap]

As you can see here, record-dot-preprocessor pulls in uniplate, however this is not added to the ebuild by hackport. I am running the latest hackport-9999 (b8a6814).

# hackport merge record-dot-preprocessor
accepting dep: ghc-8.4.3
Accepted depends: ["extra"]
Skipped depends: ["base >=4.8 && <5"]
Dead flags: []
Dropped flags: []
Active flags: []
Irrelevant flags: []
Current keywords: Nothing -> ["~amd64","~x86"]
Current license: Nothing -> Right "BSD"
Writing record-dot-preprocessor-0.2.7.ebuild
Recalculating digests...
Running repoman full --include-dev and pkgcheck scan...

RepoMan scours the neighborhood...
RepoMan sez: "If everyone were like you, I'd be out of business!"

Generated ebuild:

# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

# ebuild generated by hackport 0.6.7.9999

CABAL_FEATURES="lib profile haddock hoogle hscolour test-suite"
inherit haskell-cabal

DESCRIPTION="Preprocessor to allow record.field syntax"
HOMEPAGE="https://github.com/ndmitchell/record-dot-preprocessor#readme"
SRC_URI="https://hackage.haskell.org/package/${P}/${P}.tar.gz"

LICENSE="BSD"
SLOT="0/${PV}"
KEYWORDS="~amd64 ~x86"

RDEPEND="dev-haskell/extra:=[profile?]
	>=dev-lang/ghc-8.4.3:=
"
DEPEND="${RDEPEND}
	>=dev-haskell/cabal-2.2.0.1
	test? ( dev-haskell/record-hasfield )
"

[trofi]

It gets pulled in only on very fresh ghc:

    if impl(ghc >= 8.6)
        build-depends:
            record-dot-preprocessor

In your case hackport stopped at accepting dep: ghc-8.4.3.

[hololeap]

I'm using 8.10.3: The Glorious Glasgow Haskell Compilation System, version 8.10.3

What needs to be done on my system? Could there be a stale config file somewhere?

[trofi]

Hackport does not generate ebuilds based on currently installed ghc. It tries to determine lowest ghc version enough to resolve dependencies in .cabal file and uses that ghc version to derive rest of dependencies. It does not always lead to reasonable solutions. I usually manually remove if impl(ghc >= 8.6) constraints to get hackport generate full dependencies.