Resolving dependencies...
Configuring Cabal-syntax-3.14.2.0...
Error: cabal: The program 'alex' is required but it could not be found.

Failed to install Cabal-syntax-3.14.2.0
Error: cabal: Some packages failed to install:
Cabal-3.14.2.0-5EmeHeFOnlg6LUfjux81wx depends on Cabal-3.14.2.0 which failed
to install.
Cabal-syntax-3.14.2.0-IuTZTVBTRAqCtART6g02v2 failed during the configure step.
The exception was:
ExitFailure 1
cabal-install-3.14.2.0-8EMtL85QaMc6ZYB5V9pm1F depends on
cabal-install-3.14.2.0 which failed to install.
cabal-install-solver-3.14.2.0-Bn0dASTjR8UBsJVNLOnhhz depends on
cabal-install-solver-3.14.2.0 which failed to install.
hackage-revdeps-0.1.1-6RMe2hPFLDl34I8nJV976S depends on hackage-revdeps-0.1.1
which failed to install.
hackage-security-0.6.3.0-8cA8nH5m8x8688E12QSF2d depends on
hackage-security-0.6.3.0 which failed to install.