Warning: The install command is a part of the legacy v1 style of cabal usage.

Please switch to using either the new project style and the new-install
command or the legacy v1-install alias as new-style projects will become the
default in the next version of cabal-install. Please file a bug if you cannot
replicate a working v1- use case with the new-style commands.

For more information, see: https://wiki.haskell.org/Cabal/NewBuild

Resolving dependencies...
Starting     composition-prelude-2.0.5.0
Starting     dlist-0.8.0.6
Building     composition-prelude-2.0.5.0
Building     dlist-0.8.0.6
Completed    composition-prelude-2.0.5.0
Completed    dlist-0.8.0.6
Downloading  dir-traverse-0.1.0.0
Downloaded   dir-traverse-0.1.0.0
Starting     dir-traverse-0.1.0.0
Building     dir-traverse-0.1.0.0
Completed    dir-traverse-0.1.0.0
Downloading  archive-sig-0.2.0.1
Downloaded   archive-sig-0.2.0.1
Starting     archive-sig-0.2.0.1
Building     archive-sig-0.2.0.1
Failed to install archive-sig-0.2.0.1
Build log ( /home/builder/.cabal/logs/ghc-8.6.3/archive-sig-0.2.0.1-DNpdQvxArN36O21wBPJFWf.log ):
cabal: Entering directory '/tmp/cabal-tmp-28764/archive-sig-0.2.0.1'
Configuring archive-sig-0.2.0.1...
Preprocessing library for archive-sig-0.2.0.1..
Building library instantiated with Archive = <Archive>
for archive-sig-0.2.0.1..
[1 of 3] Compiling Archive[sig]     ( src/Archive.hsig, nothing )
[2 of 3] Compiling Archive.Compression ( src/Archive/Compression.hs, nothing )
[3 of 3] Compiling Archive.Generic  ( src/Archive/Generic.hs, nothing )
Preprocessing library for archive-sig-0.2.0.1..
Running Haddock on library instantiated with Archive = <Archive>
for archive-sig-0.2.0.1..
Warning: --source-* options are ignored when --hyperlinked-source is enabled.
Haddock coverage:
  14% (  1 /  7) in 'Archive'
  Missing documentation for:
    Module header
    Entry (src/Archive.hsig:11)
    Error (src/Archive.hsig:13)
    unpackToDir (src/Archive.hsig:21)
    readArchiveBytes (src/Archive.hsig:23)
    writeArchiveBytes (src/Archive.hsig:25)
  60% (  3 /  5) in 'Archive.Compression'
  Missing documentation for:
    Module header
    Decompressor (src/Archive/Compression.hs:12)
   0% (  0 /  6) in 'Archive.Generic'
  Missing documentation for:
    Module header
    packFromDir (src/Archive/Generic.hs:29)
    unpackFileToDir (src/Archive/Generic.hs:24)
    unpackFromFile (src/Archive/Generic.hs:21)
    packToFile (src/Archive/Generic.hs:18)
    packFromFiles (src/Archive/Generic.hs:13)
Warning: Archive.Compression: could not find link destinations for:
    Compressor
Documentation created: dist/doc/html/archive-sig/index.html,
dist/doc/html/archive-sig/archive-sig.txt
Installing library in /home/builder/hackage-server/build-cache/tmp-install/lib/x86_64-linux-ghc-8.6.3/archive-sig-0.2.0.1-DNpdQvxArN36O21wBPJFWf
cabal: '/opt/ghc/bin/ghc' exited with an error:
Failed to load interface for ‘Data.DList’
no unit id matching ‘dlist-0.8.0.6-Fp8bZM9eelBDBq54ytkFUM’ was found

cabal: Leaving directory '/tmp/cabal-tmp-28764/archive-sig-0.2.0.1'
cabal: Error: some packages failed to install:
archive-sig-0.2.0.1-DNpdQvxArN36O21wBPJFWf failed during the final install
step. The exception was:
ExitFailure 1