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     base16-bytestring-0.1.1.6
Starting     cereal-0.5.8.1
Starting     erf-2.0.0.0
Starting     entropy-0.4.1.5
Building     cereal-0.5.8.1
Building     erf-2.0.0.0
Building     base16-bytestring-0.1.1.6
Completed    base16-bytestring-0.1.1.6
Starting     primitive-0.7.0.0
Completed    erf-2.0.0.0
Starting     random-1.1
Building     primitive-0.7.0.0
Building     random-1.1
Building     entropy-0.4.1.5
Completed    entropy-0.4.1.5
Starting     utf8-string-1.0.1.1
Completed    random-1.1
Building     utf8-string-1.0.1.1
Completed    cereal-0.5.8.1
Completed    utf8-string-1.0.1.1
Starting     string-conversions-0.4.0.1
Building     string-conversions-0.4.0.1
Completed    string-conversions-0.4.0.1
Completed    primitive-0.7.0.0
Starting     tf-random-0.5
Building     tf-random-0.5
Completed    tf-random-0.5
Starting     QuickCheck-2.12.6.1
Building     QuickCheck-2.12.6.1
Completed    QuickCheck-2.12.6.1
Starting     secp256k1-legacy-0.5.6
Failed to install secp256k1-legacy-0.5.6
Build log ( /home/builder/.cabal/logs/ghc-8.6.3/secp256k1-legacy-0.5.6-BcEe14NGUxAIsvoH1RuPjf.log ):
cabal: Entering directory '/tmp/cabal-tmp-30414/secp256k1-legacy-0.5.6'
[1 of 1] Compiling Main             ( /tmp/cabal-tmp-30414/secp256k1-legacy-0.5.6/dist/setup/setup.hs, /tmp/cabal-tmp-30414/secp256k1-legacy-0.5.6/dist/setup/Main.o )
Linking /tmp/cabal-tmp-30414/secp256k1-legacy-0.5.6/dist/setup/setup ...
./autogen.sh: 3: ./autogen.sh: autoreconf: not found
cabal: Leaving directory '/tmp/cabal-tmp-30414/secp256k1-legacy-0.5.6'
cabal: Error: some packages failed to install:
secp256k1-legacy-0.5.6-BcEe14NGUxAIsvoH1RuPjf failed during the configure
step. The exception was:
ExitFailure 127