git-annex/Command/Describe.hs
Joey Hess 0a4479b8ec
Avoid backtraces on expected failures when built with ghc 8; only use backtraces for unexpected errors.
ghc 8 added backtraces on uncaught errors. This is great, but git-annex was
using error in many places for a error message targeted at the user, in
some known problem case. A backtrace only confuses such a message, so omit it.

Notably, commands like git annex drop that failed due to eg, numcopies,
used to use error, so had a backtrace.

This commit was sponsored by Ethan Aubin.
2016-11-15 21:29:54 -04:00

33 lines
758 B
Haskell

{- git-annex command
-
- Copyright 2011 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Describe where
import Command
import qualified Remote
import Logs.UUID
cmd :: Command
cmd = command "describe" SectionSetup
"change description of a repository"
(paramPair paramRemote paramDesc)
(withParams seek)
seek :: CmdParams -> CommandSeek
seek = withWords start
start :: [String] -> CommandStart
start (name:description) = do
showStart "describe" name
u <- Remote.nameToUUID name
next $ perform u $ unwords description
start _ = giveup "Specify a repository and a description."
perform :: UUID -> String -> CommandPerform
perform u description = do
describeUUID u description
next $ return True