strange issue around hlint and cpphs

[cartazio]

 $ cabal new-install hlint
Resolving dependencies...
Build profile: -w ghc-8.2.2 -O1
In order, the following will be build

cabal new-install hlint
Resolving dependencies...
Build profile: -w ghc-8.2.2 -O1
In order, the following will be built (use -v for more details):
 - conduit-1.3.0.3 (lib) (requires build)
 - haskell-src-exts-1.20.2 (lib) (requires build)
 - tagged-0.8.6 (lib) (requires build)
 - th-abstraction-0.2.8.0 (lib) (requires build)
 - extra-1.6.9 (lib) (requires build)
 - haskell-src-exts-util-0.2.3 (lib) (requires build)
 - aeson-1.4.0.0 (lib) (requires build)
 - yaml-0.9.0 (lib) (requires build)
 - hlint-2.1.8 (lib) (requires build)
 - hlint-2.1.8 (exe:hlint) (requires build)
Configuring tagged-0.8.6 (lib)...
Configuring th-abstraction-0.2.8.0 (lib)...
Configuring conduit-1.3.0.3 (lib)...
Configuring haskell-src-exts-1.20.2 (lib)...
Building th-abstraction-0.2.8.0 (lib)...
Building tagged-0.8.6 (lib)...
Building conduit-1.3.0.3 (lib)...
Configuring extra-1.6.9 (lib)...
Building extra-1.6.9 (lib)...
Generating tagged-0.8.6 (lib) documentation...
Generating th-abstraction-0.2.8.0 (lib) documentation...
Generating extra-1.6.9 (lib) documentation...
Generating conduit-1.3.0.3 (lib) documentation...
Symlinking hlint

Failed to build haskell-src-exts-1.20.2. The failure occurred during the
configure step.
Build log (
/Users/carter/.cabal/logs/ghc-8.2.2/hskll-src-xts-1.20.2-3e93ea07.log ):
Configuring library for haskell-src-exts-1.20.2..
cabal: The following package dependencies were requested
--dependency='cpphs=cpphs-1.20.8-44946a45'
however the given installed package instance does not exist.

cabal: Failed to build haskell-src-exts-1.20.2 (which is required by exe:hlint
from hlint-2.1.8). See the build log above for details.

[cartazio]

is this a bug in new-install or bad data?

[cartazio]

(or is it a trustee issue? )
my index state can be reproduced by
cabal update --index-state='2018-07-24T22:17:34Z'

[gwils]

With your index state, hlint installs successfully for me with ghc 8.2.2 and 8.4.3
cabal-install version 2.2.0.0
compiled using version 2.2.0.1 of the Cabal library

[hvr]

@cartazio @gwils see haskell/cabal#5379 (comment)

[andreasabel]

Upstream issue is fixed:

• Builds depending on cpphs fail occasionally.  haskell/cabal#5379