gistfile1.txt

==> Downloading https://hackage.haskell.org/package/dhall-json-1.0.4/dhall-json-1.0.4.tar.gz
Already downloaded: /Users/joe/Library/Caches/Homebrew/dhall-json-1.0.4.tar.gz
==> Verifying dhall-json-1.0.4.tar.gz checksum
tar xzf /Users/joe/Library/Caches/Homebrew/dhall-json-1.0.4.tar.gz
==> cabal sandbox init
Config file path source is default config file.
Config file
/private/tmp/dhall-json-20170808-78348-1v47iow/dhall-json-1.0.4/.cabal/config
not found.
Writing default configuration to
/private/tmp/dhall-json-20170808-78348-1v47iow/dhall-json-1.0.4/.cabal/config
Writing a default package environment file to
/private/tmp/dhall-json-20170808-78348-1v47iow/dhall-json-1.0.4/cabal.sandbox.config
Creating a new sandbox at
/private/tmp/dhall-json-20170808-78348-1v47iow/dhall-json-1.0.4/.cabal-sandbox
==> cabal update
Downloading the latest package list from hackage.haskell.org
==> cabal install --jobs=8 --max-backjumps=100000 --only-dependencies
clang: warning: -Wl,-headerpad_max_install_names: 'linker' input unused
clang: warning: argument unused during compilation: '-L/usr/local/opt/ghc@8.0/lib'
clang: warning: argument unused during compilation: '-L/usr/local/lib'
clang: warning: argument unused during compilation: '-L/System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries'
Resolving dependencies...
Notice: installing into a sandbox located at
/private/tmp/dhall-json-20170808-78348-1v47iow/dhall-json-1.0.4/.cabal-sandbox
Downloading ansi-terminal-0.6.3.1...
Downloading base-compat-0.9.3...
Downloading base-prelude-1.2.0.1...
Configuring base-compat-0.9.3...
Configuring ansi-terminal-0.6.3.1...
Downloading base64-bytestring-1.0.0.1...
Configuring base64-bytestring-1.0.0.1...
Downloading byteable-0.1.1...
Configuring base-prelude-1.2.0.1...
Downloading cabal-doctest-1.0.2...
Configuring byteable-0.1.1...
Downloading call-stack-0.1.0...
Configuring cabal-doctest-1.0.2...
Downloading base-orphans-0.6...
Configuring call-stack-0.1.0...
Building ansi-terminal-0.6.3.1...
Building base-compat-0.9.3...
Configuring base-orphans-0.6...
Building base64-bytestring-1.0.0.1...
Building base-prelude-1.2.0.1...
Building byteable-0.1.1...
Building cabal-doctest-1.0.2...
Building call-stack-0.1.0...
Building base-orphans-0.6...
Installed byteable-0.1.1
Downloading cereal-0.5.4.0...
Installed base-prelude-1.2.0.1
Downloading data-default-class-0.1.2.0...
Configuring cereal-0.5.4.0...
Configuring data-default-class-0.1.2.0...
Installed call-stack-0.1.0
Downloading dlist-0.8.0.3...
Configuring dlist-0.8.0.3...
Installed base64-bytestring-1.0.0.1
Downloading fail-4.9.0.0...
Building cereal-0.5.4.0...
Building data-default-class-0.1.2.0...
Configuring fail-4.9.0.0...
Installed cabal-doctest-1.0.2
Downloading fingertree-0.1.1.0...
Installed base-orphans-0.6
Downloading foundation-0.0.13...
Configuring fingertree-0.1.1.0...
Building dlist-0.8.0.3...
Configuring foundation-0.0.13...
Building fail-4.9.0.0...
Installed data-default-class-0.1.2.0
Downloading hourglass-0.2.10...
Building fingertree-0.1.1.0...
Installed fail-4.9.0.0
Downloading integer-logarithms-1.0.2...
Installed ansi-terminal-0.6.3.1
Building foundation-0.0.13...
Configuring integer-logarithms-1.0.2...
Downloading mtl-2.2.1...
Configuring hourglass-0.2.10...
Installed dlist-0.8.0.3
Downloading network-2.6.3.2...
Configuring mtl-2.2.1...
Configuring network-2.6.3.2...
Building integer-logarithms-1.0.2...
Building hourglass-0.2.10...
Building mtl-2.2.1...
Installed base-compat-0.9.3
Downloading old-locale-1.0.0.7...
Configuring old-locale-1.0.0.7...
Installed integer-logarithms-1.0.2
Downloading parallel-3.2.1.1...
Configuring parallel-3.2.1.1...
Building old-locale-1.0.0.7...
Building parallel-3.2.1.1...
Installed fingertree-0.1.1.0
Downloading prelude-extras-0.4.0.3...
Installed old-locale-1.0.0.7
Downloading primitive-0.6.2.0...
Configuring prelude-extras-0.4.0.3...
Configuring primitive-0.6.2.0...
Building prelude-extras-0.4.0.3...
Installed mtl-2.2.1
Downloading random-1.1...
Building primitive-0.6.2.0...
Configuring random-1.1...
Installed parallel-3.2.1.1
Downloading reflection-2.1.2...
Configuring reflection-2.1.2...
Building random-1.1...
Building reflection-2.1.2...
Building network-2.6.3.2...
Installed prelude-extras-0.4.0.3
Downloading semigroups-0.18.3...
Installed cereal-0.5.4.0
Downloading stm-2.4.4.1...
Configuring semigroups-0.18.3...
Configuring stm-2.4.4.1...
Building semigroups-0.18.3...
Building stm-2.4.4.1...
Installed random-1.1
Downloading text-1.2.2.2...
Configuring text-1.2.2.2...
Installed semigroups-0.18.3
Downloading th-abstraction-0.2.4.0...
Configuring th-abstraction-0.2.4.0...
Building text-1.2.2.2...
Installed hourglass-0.2.10
Downloading time-locale-compat-0.1.1.3...
Building th-abstraction-0.2.4.0...
Installed reflection-2.1.2
Downloading transformers-compat-0.5.1.4...
Configuring time-locale-compat-0.1.1.3...
Configuring transformers-compat-0.5.1.4...
Installed primitive-0.6.2.0
Downloading utf8-string-1.0.1.1...
Configuring utf8-string-1.0.1.1...
Installed stm-2.4.4.1
Downloading void-0.7.2...
Building time-locale-compat-0.1.1.3...
Configuring void-0.7.2...
Building transformers-compat-0.5.1.4...
Building utf8-string-1.0.1.1...
Installed time-locale-compat-0.1.1.3
Downloading zlib-0.6.1.2...
Building void-0.7.2...
Configuring zlib-0.6.1.2...
Installed transformers-compat-0.5.1.4
Downloading ansi-wl-pprint-0.6.8...
Configuring ansi-wl-pprint-0.6.8...
Installed void-0.7.2
Downloading pem-0.2.2...
Building zlib-0.6.1.2...
Configuring pem-0.2.2...
Building ansi-wl-pprint-0.6.8...
Building pem-0.2.2...
Installed th-abstraction-0.2.4.0
Downloading vector-0.12.0.1...
Installed pem-0.2.2
Downloading async-2.1.1.1...
Configuring vector-0.12.0.1...
Installed ansi-wl-pprint-0.6.8
Downloading StateVar-1.1.0.4...
Configuring async-2.1.1.1...
Installed utf8-string-1.0.1.1
Downloading transformers-base-0.4.4...
Configuring StateVar-1.1.0.4...
Configuring transformers-base-0.4.4...
Building vector-0.12.0.1...
Installed network-2.6.3.2
Downloading tagged-0.8.5...
Building async-2.1.1.1...
Configuring tagged-0.8.5...
Building StateVar-1.1.0.4...
Building transformers-base-0.4.4...
Building tagged-0.8.5...
Installed StateVar-1.1.0.4
Downloading mmorph-1.1.0...
Configuring mmorph-1.1.0...
Installed transformers-base-0.4.4
Downloading exceptions-0.8.3...
Configuring exceptions-0.8.3...
Installed zlib-0.6.1.2
Downloading optparse-applicative-0.13.2.0...
Building mmorph-1.1.0...
Installed async-2.1.1.1
Downloading socks-0.5.5...
Configuring optparse-applicative-0.13.2.0...
Configuring socks-0.5.5...
Building exceptions-0.8.3...
Building optparse-applicative-0.13.2.0...
Building socks-0.5.5...
Installed tagged-0.8.5
Downloading contravariant-1.4...
Installed mmorph-1.1.0
Downloading monad-control-1.0.2.2...
Configuring contravariant-1.4...
Configuring monad-control-1.0.2.2...
Installed exceptions-0.8.3
Downloading distributive-0.5.3...
Building monad-control-1.0.2.2...
Building contravariant-1.4...
Configuring distributive-0.5.3...
Installed monad-control-1.0.2.2
Downloading lifted-base-0.2.3.11...
Configuring lifted-base-0.2.3.11...
Building distributive-0.5.3...
Building lifted-base-0.2.3.11...
Installed contravariant-1.4
Installed socks-0.5.5
Installed distributive-0.5.3
Downloading comonad-5.0.2...
Configuring comonad-5.0.2...
Installed optparse-applicative-0.13.2.0
Installed lifted-base-0.2.3.11
Downloading resourcet-1.1.9...
Configuring resourcet-1.1.9...
Building resourcet-1.1.9...
Building comonad-5.0.2...
Installed resourcet-1.1.9
Downloading conduit-1.2.11...
Configuring conduit-1.2.11...
Building conduit-1.2.11...
Installed comonad-5.0.2
Downloading bifunctors-5.4.2...
Configuring bifunctors-5.4.2...
Building bifunctors-5.4.2...
Installed conduit-1.2.11
Installed bifunctors-5.4.2
Downloading profunctors-5.2.1...
Configuring profunctors-5.2.1...
Building profunctors-5.2.1...
Installed text-1.2.2.2
Downloading system-filepath-0.4.13.4...
Downloading parsec-3.1.11...
Downloading mime-types-0.1.0.7...
Configuring parsec-3.1.11...
Downloading hashable-1.2.6.1...
Configuring system-filepath-0.4.13.4...
Configuring mime-types-0.1.0.7...
Downloading double-conversion-2.0.2.0...
Configuring hashable-1.2.6.1...
Building parsec-3.1.11...
Building mime-types-0.1.0.7...
Building hashable-1.2.6.1...
Configuring double-conversion-2.0.2.0...
Building double-conversion-2.0.2.0...
Installed profunctors-5.2.1
Downloading blaze-builder-0.4.0.2...
Building system-filepath-0.4.13.4...
Configuring blaze-builder-0.4.0.2...
Installed foundation-0.0.13
Downloading memory-0.14.6...
Building blaze-builder-0.4.0.2...
Configuring memory-0.14.6...
Installed hashable-1.2.6.1
Downloading uuid-types-1.0.3...
Configuring uuid-types-1.0.3...
Building memory-0.14.6...
Building uuid-types-1.0.3...
Installed blaze-builder-0.4.0.2
Downloading unordered-containers-0.2.8.0...
Configuring unordered-containers-0.2.8.0...
Installed system-filepath-0.4.13.4
Downloading scientific-0.3.5.1...
Configuring scientific-0.3.5.1...
Installed mime-types-0.1.0.7
Downloading case-insensitive-1.2.0.10...
Configuring case-insensitive-1.2.0.10...
Building unordered-containers-0.2.8.0...
Building scientific-0.3.5.1...
Installed uuid-types-1.0.3
Downloading streaming-commons-0.1.18...
Installed double-conversion-2.0.2.0
Downloading cookie-0.4.2.1...
Building case-insensitive-1.2.0.10...
Configuring streaming-commons-0.1.18...
Configuring cookie-0.4.2.1...
Building streaming-commons-0.1.18...
Building cookie-0.4.2.1...
Installed case-insensitive-1.2.0.10
Downloading blaze-markup-0.8.0.0...
Configuring blaze-markup-0.8.0.0...
Installed parsec-3.1.11
Downloading system-fileio-0.3.16.3...
Configuring system-fileio-0.3.16.3...
Installed cookie-0.4.2.1
Downloading optparse-generic-1.1.5...
Building blaze-markup-0.8.0.0...
Configuring optparse-generic-1.1.5...
Building system-fileio-0.3.16.3...
Installed memory-0.14.6
Downloading text-format-0.3.1.1...
Configuring text-format-0.3.1.1...
Building optparse-generic-1.1.5...
Building text-format-0.3.1.1...
Installed scientific-0.3.5.1
Downloading http-types-0.9.1...
Configuring http-types-0.9.1...
Installed system-fileio-0.3.16.3
Downloading network-uri-2.6.1.0...
Building http-types-0.9.1...
Configuring network-uri-2.6.1.0...
Building network-uri-2.6.1.0...
Installed optparse-generic-1.1.5
Downloading neat-interpolation-0.3.2.1...
Configuring neat-interpolation-0.3.2.1...
Building neat-interpolation-0.3.2.1...
Installed blaze-markup-0.8.0.0
Downloading cryptonite-0.24...
Configuring cryptonite-0.24...
Installed http-types-0.9.1
Downloading asn1-types-0.3.2...
Installed unordered-containers-0.2.8.0
Downloading attoparsec-0.13.2.0...
Configuring asn1-types-0.3.2...
Building cryptonite-0.24...
Installed neat-interpolation-0.3.2.1
Downloading blaze-html-0.9.0.1...
Configuring attoparsec-0.13.2.0...
Installed streaming-commons-0.1.18
Downloading semigroupoids-5.2.1...
Configuring blaze-html-0.9.0.1...
Configuring semigroupoids-5.2.1...
Building asn1-types-0.3.2...
Installed text-format-0.3.1.1
Downloading charset-0.3.7.1...
Configuring charset-0.3.7.1...
Building attoparsec-0.13.2.0...
Building blaze-html-0.9.0.1...
Installed vector-0.12.0.1
Installed network-uri-2.6.1.0
Downloading http-client-0.5.7.0...
Building charset-0.3.7.1...
Configuring http-client-0.5.7.0...
Building semigroupoids-5.2.1...
Building http-client-0.5.7.0...
Installed asn1-types-0.3.2
Downloading asn1-encoding-0.9.5...
Configuring asn1-encoding-0.9.5...
Building asn1-encoding-0.9.5...
Installed asn1-encoding-0.9.5
Downloading asn1-parse-0.9.4...
Configuring asn1-parse-0.9.4...
Installed charset-0.3.7.1
Building asn1-parse-0.9.4...
Installed asn1-parse-0.9.4
Installed semigroupoids-5.2.1
Downloading reducers-3.12.1...
Downloading free-4.12.4...
Configuring reducers-3.12.1...
Configuring free-4.12.4...
Building reducers-3.12.1...
Building free-4.12.4...
Installed http-client-0.5.7.0
Installed reducers-3.12.1
Installed free-4.12.4
Downloading adjunctions-4.3...
Configuring adjunctions-4.3...
Installed attoparsec-0.13.2.0
Downloading parsers-0.12.6...
Downloading aeson-1.1.2.0...
Configuring parsers-0.12.6...
Building adjunctions-4.3...
Configuring aeson-1.1.2.0...
Installed blaze-html-0.9.0.1
Building aeson-1.1.2.0...
Building parsers-0.12.6...
Installed adjunctions-4.3
Downloading kan-extensions-5.0.2...
Configuring kan-extensions-5.0.2...
Building kan-extensions-5.0.2...
Installed parsers-0.12.6
Installed kan-extensions-5.0.2
Downloading lens-4.15.4...
Configuring lens-4.15.4...
Building lens-4.15.4...
Installed cryptonite-0.24
Downloading x509-1.7.2...
Configuring x509-1.7.2...
Building x509-1.7.2...
Installed x509-1.7.2
Downloading x509-store-1.6.5...
Configuring x509-store-1.6.5...
Building x509-store-1.6.5...
Installed x509-store-1.6.5
Downloading x509-validation-1.6.9...
Downloading x509-system-1.6.6...
Configuring x509-system-1.6.6...
Configuring x509-validation-1.6.9...
Building x509-system-1.6.6...
Building x509-validation-1.6.9...
Installed x509-system-1.6.6
Installed x509-validation-1.6.9
Downloading tls-1.4.0...
Configuring tls-1.4.0...
Building tls-1.4.0...
Installed lens-4.15.4
Downloading trifecta-1.6.2.1...
Configuring trifecta-1.6.2.1...
Installed aeson-1.1.2.0
Downloading yaml-0.8.23.3...
Configuring yaml-0.8.23.3...
Building yaml-0.8.23.3...
Building trifecta-1.6.2.1...
Failed to install trifecta-1.6.2.1
Build log ( /private/tmp/dhall-json-20170808-78348-1v47iow/dhall-json-1.0.4/.cabal-sandbox/logs/ghc-8.0.2/trifecta-1.6.2.1-2vPOScXwOhmFuR3MyAzULj.log ):
cabal: Entering directory '/tmp/cabal-tmp-78370/trifecta-1.6.2.1'
[1 of 1] Compiling Main             ( /tmp/cabal-tmp-78370/trifecta-1.6.2.1/dist/dist-sandbox-f96742a3/setup/setup.hs, /tmp/cabal-tmp-78370/trifecta-1.6.2.1/dist/dist-sandbox-f96742a3/setup/Main.o )
Linking /tmp/cabal-tmp-78370/trifecta-1.6.2.1/dist/dist-sandbox-f96742a3/setup/setup ...
Configuring trifecta-1.6.2.1...
clang: warning: -Wl,-headerpad_max_install_names: 'linker' input unused
clang: warning: argument unused during compilation: '-L/usr/local/opt/ghc@8.0/lib'
clang: warning: argument unused during compilation: '-L/usr/local/lib'
clang: warning: argument unused during compilation: '-L/System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries'
Building trifecta-1.6.2.1...
Preprocessing library trifecta-1.6.2.1...
[ 1 of 13] Compiling Text.Trifecta.Util.IntervalMap ( src/Text/Trifecta/Util/IntervalMap.hs, dist/dist-sandbox-f96742a3/build/Text/Trifecta/Util/IntervalMap.o )
[ 2 of 13] Compiling Text.Trifecta.Util.Combinators ( src/Text/Trifecta/Util/Combinators.hs, dist/dist-sandbox-f96742a3/build/Text/Trifecta/Util/Combinators.o )
[ 3 of 13] Compiling Text.Trifecta.Util.Array ( src/Text/Trifecta/Util/Array.hs, dist/dist-sandbox-f96742a3/build/Text/Trifecta/Util/Array.o )
[ 4 of 13] Compiling Text.Trifecta.Instances ( src/Text/Trifecta/Instances.hs, dist/dist-sandbox-f96742a3/build/Text/Trifecta/Instances.o )

src/Text/Trifecta/Instances.hs:18:10: error:
    Duplicate instance declarations:
      instance Data.Semigroup Doc
        -- Defined at src/Text/Trifecta/Instances.hs:18:10
      instance [safe] Data.Semigroup Doc
        -- Defined in ‘Text.PrettyPrint.ANSI.Leijen.Internal’
cabal: Leaving directory '/tmp/cabal-tmp-78370/trifecta-1.6.2.1'
Installed tls-1.4.0
Installed yaml-0.8.23.3
cabal: Error: some packages failed to install:
dhall-1.5.1-AIPTNjvj7BN5FxlhYpbUg7 depends on dhall-1.5.1 which failed to
install.
trifecta-1.6.2.1-2vPOScXwOhmFuR3MyAzULj failed during the building phase. The
exception was:
ExitFailure 1
/usr/local/Homebrew/Library/Homebrew/build.rb (Formulary::FormulaLoader): loading /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/python.rb
/usr/local/Homebrew/Library/Homebrew/debrew.rb:11:in `raise'
BuildError: Failed executing: cabal install --jobs=8 --max-backjumps=100000 --only-dependencies
1. raise
2. ignore
3. backtrace
4. irb
5. shell
Choose an action: 5
When you exit this shell, you will return to the menu.
bash-3.2$ cabal install -j1 --max-backjumps=100000 --only-dependencies
clang: warning: -Wl,-headerpad_max_install_names: 'linker' input unused
clang: warning: argument unused during compilation: '-L/usr/local/opt/ghc@8.0/lib'
clang: warning: argument unused during compilation: '-L/usr/local/lib'
clang: warning: argument unused during compilation: '-L/System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries'
Resolving dependencies...
Downloading connection-0.2.8...
Configuring connection-0.2.8...
clang: warning: -Wl,-headerpad_max_install_names: 'linker' input unused
clang: warning: argument unused during compilation: '-L/usr/local/opt/ghc@8.0/lib'
clang: warning: argument unused during compilation: '-L/usr/local/lib'
clang: warning: argument unused during compilation: '-L/System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries'
Preprocessing library for connection-0.2.8..
Building library for connection-0.2.8..
[1 of 2] Compiling Network.Connection.Types ( Network/Connection/Types.hs, dist/dist-sandbox-f96742a3/build/Network/Connection/Types.o )
[2 of 2] Compiling Network.Connection ( Network/Connection.hs, dist/dist-sandbox-f96742a3/build/Network/Connection.o )

Network/Connection.hs:52:1: warning: [-Wunused-imports]
    The import of ‘Control.Applicative’ is redundant
      except perhaps to import instances from ‘Control.Applicative’
    To import instances alone, use: import Control.Applicative()

Network/Connection.hs:101:1: warning: [-Wunused-top-binds]
    Defined but not used: ‘connectionSessionManager’

Network/Connection.hs:117:62: warning: [-Wdeprecations]
    In the use of ‘ciphersuite_all’
    (imported from Network.TLS.Extra, but defined in Network.TLS.Extra.Cipher):
    "This ciphersuite list contains RC4. Use ciphersuite_strong or ciphersuite_default instead."

Network/Connection.hs:206:39: warning: [-Wname-shadowing]
    This binding for ‘serv’ shadows the existing binding
      bound at Network/Connection.hs:205:17
Installing library in /private/tmp/dhall-json-20170808-78348-1v47iow/dhall-json-1.0.4/.cabal-sandbox/lib/x86_64-osx-ghc-8.0.2/connection-0.2.8-7MDcqvTZLw45lXUFe2GHwc
Installed connection-0.2.8
[1 of 1] Compiling Main             ( /tmp/cabal-tmp-90731/trifecta-1.6.2.1/dist/dist-sandbox-f96742a3/setup/setup.hs, /tmp/cabal-tmp-90731/trifecta-1.6.2.1/dist/dist-sandbox-f96742a3/setup/Main.o )

/tmp/cabal-tmp-90731/trifecta-1.6.2.1/dist/dist-sandbox-f96742a3/setup/setup.hs:41:69: warning: [-Wdeprecations]
    In the use of type constructor or class ‘InstalledPackageId’
    (imported from Distribution.Package):
    Deprecated: "Use UnitId instead"
Linking /tmp/cabal-tmp-90731/trifecta-1.6.2.1/dist/dist-sandbox-f96742a3/setup/setup ...
clang: warning: -Wl,-headerpad_max_install_names: 'linker' input unused
clang: warning: argument unused during compilation: '-L/usr/local/opt/ghc@8.0/lib'
clang: warning: argument unused during compilation: '-L/usr/local/lib'
clang: warning: argument unused during compilation: '-L/System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries'
Configuring trifecta-1.6.2.1...
clang: warning: -Wl,-headerpad_max_install_names: 'linker' input unused
clang: warning: argument unused during compilation: '-L/usr/local/opt/ghc@8.0/lib'
clang: warning: argument unused during compilation: '-L/usr/local/lib'
clang: warning: argument unused during compilation: '-L/System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries'
Building trifecta-1.6.2.1...
Preprocessing library trifecta-1.6.2.1...
[ 1 of 13] Compiling Text.Trifecta.Util.IntervalMap ( src/Text/Trifecta/Util/IntervalMap.hs, dist/dist-sandbox-f96742a3/build/Text/Trifecta/Util/IntervalMap.o )
[ 2 of 13] Compiling Text.Trifecta.Util.Combinators ( src/Text/Trifecta/Util/Combinators.hs, dist/dist-sandbox-f96742a3/build/Text/Trifecta/Util/Combinators.o )
[ 3 of 13] Compiling Text.Trifecta.Util.Array ( src/Text/Trifecta/Util/Array.hs, dist/dist-sandbox-f96742a3/build/Text/Trifecta/Util/Array.o )
[ 4 of 13] Compiling Text.Trifecta.Instances ( src/Text/Trifecta/Instances.hs, dist/dist-sandbox-f96742a3/build/Text/Trifecta/Instances.o )

src/Text/Trifecta/Instances.hs:18:10: error:
    Duplicate instance declarations:
      instance Data.Semigroup Doc
        -- Defined at src/Text/Trifecta/Instances.hs:18:10
      instance [safe] Data.Semigroup Doc
        -- Defined in ‘Text.PrettyPrint.ANSI.Leijen.Internal’
Failed to install trifecta-1.6.2.1
cabal: Error: some packages failed to install:
dhall-1.5.1-AIPTNjvj7BN5FxlhYpbUg7 depends on dhall-1.5.1 which failed to
install.
trifecta-1.6.2.1-2vPOScXwOhmFuR3MyAzULj failed during the building phase. The
exception was:
ExitFailure 1