1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
{- git versions
-
- Copyright 2011, 2013 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
{-# OPTIONS_GHC -fno-warn-tabs #-}
module Git.Version (
installed,
older,
normalize,
GitVersion,
) where
import Utility.Process
import Utility.DottedVersion
type GitVersion = DottedVersion
installed :: IO GitVersion
installed = normalize . extract <$> readProcess "git" ["--version"]
where
extract s = case lines s of
[] -> ""
(l:_) -> unwords $ drop 2 $ words l
older :: String -> IO Bool
older n = do
v <- installed
return $ v < normalize n
|
