Cabal: error message / missing documentation

Question

So, I recently installed cabal (from the default binary file ArchLinux). Then I tried updating cabal as a user:

cabal update Cabal --user --prefix = $ USER
Dependency resolution ...
cabal: fromFlag NoFlag. Using fromFlagOrDefault

What I have already done:

• Error message failed. Turned up the source of the quote and a little more.
• Looked at haskell-wiki on cabal-install.
• Looked at this manual.

So basically I'm wondering:

• What happens with the error message?
• Can someone point me towards a textbook in bondage?

Answer 1

, Arch. Arch, .

cabal-install (0.8.2) ​​Hackage, , cabal upgrade Cabal. , , , .

, Cabal? , ghc, - 1.8.0.2, - 1.8.0.4 - IMO. , cabal-install , cabal install? .

Answer 2

, , ,

• Setup.hs?
• flags: ~/.cabal/config?

, , Cabal; Haskell.

, ( Cabal), , , - . , , , Cabal , , , , . , SO.

, cabal upgrade , , cabal install , , .

Answer 3

From user tlo :

The global configuration file for cabal-install is ~ / .cabal / config. If you do not have this file, cabal will create it for you on the first call the update for the cable.

I deleted my configuration, started it cabal update, and everything was fine.