Resolving dependencies...
Downloading  ghc-lib-parser-9.10.2.20250503
Downloaded   ghc-lib-parser-9.10.2.20250503
Configuring ghc-lib-parser-9.10.2.20250503...
Error: cabal: The program 'alex' version >=3.1 is required but it could not be
found.

Failed to install ghc-lib-parser-9.10.2.20250503
Error: cabal: Some packages failed to install:
ghc-lib-9.10.2.20250503-H0ygzfVwksdKtBn3rvZIEY depends on
ghc-lib-9.10.2.20250503 which failed to install.
ghc-lib-parser-9.10.2.20250503-9w1UrDK2wX7IbtssuisSNF failed during the
configure step. The exception was:
ExitFailure 1