Resolving dependencies...
Starting     StateVar-1.2.2
Starting     Only-0.1
Starting     ap-normalize-0.1.0.1
Starting     base-orphans-0.8.4
Building     StateVar-1.2.2
Building     Only-0.1
Building     ap-normalize-0.1.0.1
Building     base-orphans-0.8.4
Completed    ap-normalize-0.1.0.1
Starting     cabal-doctest-1.0.8
Completed    Only-0.1
Starting     cereal-0.5.8.1
Completed    StateVar-1.2.2
Starting     hashable-1.3.2.0
Building     cabal-doctest-1.0.8
Building     cereal-0.5.8.1
Building     hashable-1.3.2.0
Completed    cabal-doctest-1.0.8
Starting     integer-logarithms-1.0.3.1
Building     integer-logarithms-1.0.3.1
Completed    base-orphans-0.8.4
Starting     old-locale-1.0.0.7
Building     old-locale-1.0.0.7
Completed    hashable-1.3.2.0
Starting     primitive-0.7.2.0
Building     primitive-0.7.2.0
Completed    integer-logarithms-1.0.3.1
Starting     show-combinators-0.2.0.0
Completed    old-locale-1.0.0.7
Starting     syb-0.7.2.1
Building     show-combinators-0.2.0.0
Building     syb-0.7.2.1
Completed    show-combinators-0.2.0.0
Starting     contravariant-1.5.5
Completed    cereal-0.5.8.1
Starting     unordered-containers-0.2.14.0
Building     contravariant-1.5.5
Building     unordered-containers-0.2.14.0
Completed    syb-0.7.2.1
Starting     text-short-0.1.3
Building     text-short-0.1.3
Completed    contravariant-1.5.5
Starting     old-time-1.1.0.3
Building     old-time-1.1.0.3
Completed    text-short-0.1.3
Starting     generic-data-0.9.2.0
Completed    old-time-1.1.0.3
Building     generic-data-0.9.2.0
Completed    primitive-0.7.2.0
Starting     scientific-0.3.7.0
Starting     vector-0.12.3.0
Building     scientific-0.3.7.0
Building     vector-0.12.3.0
Completed    unordered-containers-0.2.14.0
Completed    scientific-0.3.7.0
Starting     attoparsec-0.14.1
Building     attoparsec-0.14.1
Completed    generic-data-0.9.2.0
Completed    attoparsec-0.14.1
Completed    vector-0.12.3.0
Starting     safecopy-0.10.4.2
Starting     cassava-0.5.2.0
Building     safecopy-0.10.4.2
Building     cassava-0.5.2.0
Completed    safecopy-0.10.4.2
Starting     ixset-typed-0.5
Completed    cassava-0.5.2.0
Building     ixset-typed-0.5
Completed    ixset-typed-0.5
Starting     ixset-typed-cassava-0.0.1.0
Building     ixset-typed-cassava-0.0.1.0
Failed to install ixset-typed-cassava-0.0.1.0
Build log ( /home/builder/.cabal/logs/ghc-8.10.2/ixset-typed-cassava-0.0.1.0-2dyVwU0f1FXCA7akLc32Wo.log ):
cabal: Entering directory '/tmp/cabal-tmp-2282/ixset-typed-cassava-0.0.1.0'
Configuring ixset-typed-cassava-0.0.1.0...
Preprocessing library for ixset-typed-cassava-0.0.1.0..
Building library for ixset-typed-cassava-0.0.1.0..
[1 of 2] Compiling Data.Csv.IxSet.Typed ( src/Data/Csv/IxSet/Typed.hs, dist/build/Data/Csv/IxSet/Typed.o, dist/build/Data/Csv/IxSet/Typed.dyn_o )

src/Data/Csv/IxSet/Typed.hs:1:30: error:
    Ambiguous occurrence decodeByName
    It could refer to
       either Data.Csv.decodeByName,
              imported from Data.Csv at src/Data/Csv/IxSet/Typed.hs:4:1-15
              (and originally defined in cassava-0.5.2.0:Data.Csv.Encoding)
           or Data.Csv.IxSet.Typed.decodeByName,
              defined at src/Data/Csv/IxSet/Typed.hs:12:1
  |
1 | module Data.Csv.IxSet.Typed (decodeByName, encodeByName) where
  |                              ^^^^^^^^^^^^

src/Data/Csv/IxSet/Typed.hs:1:44: error:
    Ambiguous occurrence encodeByName
    It could refer to
       either Data.Csv.encodeByName,
              imported from Data.Csv at src/Data/Csv/IxSet/Typed.hs:4:1-15
              (and originally defined in cassava-0.5.2.0:Data.Csv.Encoding)
           or Data.Csv.IxSet.Typed.encodeByName,
              defined at src/Data/Csv/IxSet/Typed.hs:18:1
  |
1 | module Data.Csv.IxSet.Typed (decodeByName, encodeByName) where
  |                                            ^^^^^^^^^^^^
cabal: Leaving directory '/tmp/cabal-tmp-2282/ixset-typed-cassava-0.0.1.0'
cabal: Error: some packages failed to install:
ixset-typed-cassava-0.0.1.0-2dyVwU0f1FXCA7akLc32Wo failed during the building
phase. The exception was:
ExitFailure 1