Fix compilation errors

- Remove nonexistent confDebounce field from WatchConfig (fsnotify 0.4.4.0)
- Remove unused Generic deriving and GHC.Generics import
- Replace .!= with fromMaybe (not re-exported by Data.Yaml)
- Add missing Data.Text import in Main.hs
- Use git -C flag in runGitIn to run in the correct repo directory
- Clean up unused imports

fsnotify-0.4.4.0/example/Main.hs

@@ -0,0 +1,35 @@
+{-# LANGUAGE NumericUnderscores #-}
+{-# LANGUAGE QuasiQuotes #-}
+
+module Main where
+
+import Control.Concurrent
+import Data.String.Interpolate
+import System.FSNotify
+import System.FilePath
+import UnliftIO.Temporary
+
+
+main :: IO ()
+main = do
+  withSystemTempDirectory "fsnotify-foo" $ \dir -> do
+    putStrLn [i|Starting watch on dir: #{dir}|]
+
+    let conf = defaultConfig
+
+    withManagerConf conf $ \mgr -> do
+      stop <- watchDir mgr dir (const True) $ \ev -> do
+        putStrLn [i|Got event: #{ev}|]
+      threadDelay 3_000_000
+
+      putStrLn [i|Writing to #{dir </> "bar"}|]
+      writeFile (dir </> "bar") "asdf"
+      threadDelay 3_000_000
+
+      putStrLn [i|Stopping|]
+      stop
+      putStrLn [i|Stopped|]
+      threadDelay 3_000_000
+
+    putStrLn [i|Exited withManagerConf|]
+    threadDelay 3_000_000