Trying out “cabal sandbox init” and cabal not recognizing the command “sandbox”

问题

I'm trying out the tutorial about making a simple website with scotty but I get an error when I try the command "cabal sandbox init":

cabal: unrecognised command: sandbox (try --help)

Does anyone know what is wrong?

回答1:

Is your Cabal/cabal-install version new enough? Sandboxes were introduced in Cabal 1.18. You can check the version with command cabal --version.

You might be able to upgrade with these commands:

cabal update
cabal install Cabal cabal-install

来源：https://stackoverflow.com/questions/27887249/trying-out-cabal-sandbox-init-and-cabal-not-recognizing-the-command-sandbox