Resolving dependencies...
Configuring Cabal-syntax-3.14.2.0...
Error: [Cabal-6666]
The program 'alex' is required but it could not be found.

Failed to install Cabal-syntax-3.14.2.0
Error: [Cabal-7140]
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-3.14.2.0-8rYRciiP2jUEonpElZhQaw depends on cabal-install-3.14.2.0 which failed to install.
cabal-install-solver-3.14.2.0-21jHiVtM5ve4icE9oHrlRS depends on cabal-install-solver-3.14.2.0 which failed to install.
hackage-security-0.6.2.6-KLPvxJZvRI5AtXTi6GGc6i depends on hackage-security-0.6.2.6 which failed to install.
hix-0.9.1-18L5jdVHHiC17xf11p0QMG depends on hix-0.9.1 which failed to install.