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     bitarray-0.0.1.1
Starting     parser-combinators-1.2.1
Starting     hs-functors-0.1.4.0
Starting     Cabal-3.0.0.0
Building     bitarray-0.0.1.1
Building     hs-functors-0.1.4.0
Building     parser-combinators-1.2.1
Building     Cabal-3.0.0.0
Completed    bitarray-0.0.1.1
Starting     regex-applicative-0.3.3.1
Completed    parser-combinators-1.2.1
Starting     util-0.1.15.0
Building     regex-applicative-0.3.3.1
Building     util-0.1.15.0
Completed    regex-applicative-0.3.3.1
Starting     unicode-transforms-0.3.6
Completed    util-0.1.15.0
Building     unicode-transforms-0.3.6
Completed    hs-functors-0.1.4.0
Completed    unicode-transforms-0.3.6
Completed    Cabal-3.0.0.0
Starting     ucd-0.0.1.3
Building     ucd-0.0.1.3
Warning: /tmp/pkgConf-ucd-0.0.1.3-26005/pkgConf: .:3:1: Unknown field:
"visibility"
Completed    ucd-0.0.1.3
Starting     lex-applicative-0.0.0.0
Building     lex-applicative-0.0.0.0
Failed to install lex-applicative-0.0.0.0
Build log ( /home/builder/.cabal/logs/ghc-8.6.3/lex-applicative-0.0.0.0-HADGdnYJv0pLWFETjmpMj1.log ):
cabal: Entering directory '/tmp/cabal-tmp-26005/lex-applicative-0.0.0.0'
Configuring lex-applicative-0.0.0.0...
Preprocessing library for lex-applicative-0.0.0.0..
Building library for lex-applicative-0.0.0.0..
[1 of 3] Compiling Data.TextPos     ( src/Data/TextPos.hs, dist/build/Data/TextPos.o )
[2 of 3] Compiling Text.Lexer       ( src/Text/Lexer.hs, dist/build/Text/Lexer.o )

src/Text/Lexer.hs:11:46: error:
    Module
    ‘Text.Regex.Applicative’
    does not export
    ‘findLongestPrefix'’
   |
11 | import           Text.Regex.Applicative (RE, findLongestPrefix')
   |                                              ^^^^^^^^^^^^^^^^^^
cabal: Leaving directory '/tmp/cabal-tmp-26005/lex-applicative-0.0.0.0'
cabal: Error: some packages failed to install:
lex-applicative-0.0.0.0-HADGdnYJv0pLWFETjmpMj1 failed during the building
phase. The exception was:
ExitFailure 1