jgoerzen / configfile Goto Github PK

src/Data/ConfigFile/Types.hs:39:1: error:
    Could not load module ‘Control.Monad.Error’
    It is a member of the hidden package ‘mtl-2.2.2’.
    Perhaps you need to add ‘mtl’ to the build-depends in your .cabal file.
    Use -v (or `:set -v` in ghci) to see a list of the files searched for.
   |
39 | import Control.Monad.Error
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^

As a Hackage trustee I have revised the affected versions on Hackage. See e.g. https://hackage.haskell.org/package/ConfigFile-1.1.4/revisions/.

As can be seen on Hackage at the moment:

dist/build/tmp-15743/src/Data/ConfigFile/Monadic.hs:34:1:
parse error on input `import'

If I have got an empty section in file readfile function will fails:

qnikst@qnikst bug % cat test 
[secta]
#opt1 = b
[sectb]

opt1 = d
qnikst@qnikst bug % runhaskell configfile.hs
configfile.hs: (ParseError "\"test\" (line 4, column 1):\nunexpected NEWSECTION \"sectb\"","parser")

version: 1.0.6

The standart setup gives me a value for the option-name marginTop only if the config looks like this:

 [notification-center]
 margintop: 10

What i want is:

 [notification-center]
 marginTop: 10

This is not working though. I get the error-message (NoOption "margintop","get (notification-center/margintop)"). The only difference is the capital T in Top. The documentation states that option-names are case-insensitive though.

To make the libraray even more convenient to use, some helpers similiar to the following would be highly appreciated:

-- ^Retrieve with default value
getDef :: MonadError CPError m =>  ConfigParser ->  SectionSpec ->  OptionSpec ->  a ->  m a
getDef cp s o d = if has_option cp s o then get cp s o else return d
-- ^Retrieve as optional
getOpt :: MonadError CPError m =>  ConfigParser ->  SectionSpec ->  OptionSpec ->  m (Maybe a)
getOpt cp s o = if has_option cp s o then liftM Just (get cp s o) else return Nothing

The link to the file format in the wiki, which seems pretty crucial, is currently broken.

Thanks!