diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -7,7 +7,17 @@
 
 ## [Unreleased]
 
+## [0.1.0.1] - 2018-07-05
+
+### Changed
+
+- #92 Add build-tool-depends where needed @domenkozar
+- #90 HLint fixes @domenkozar
+- #86 Improve Cabal description and synopsis @domenkozar
+- #87 Support fsnotify 0.3.x @domenkozar
+
 ## [0.1.0.0] - 2018-07-01
 
 ### Added
+
 - Initial release @domenkozar
diff --git a/cachix.cabal b/cachix.cabal
--- a/cachix.cabal
+++ b/cachix.cabal
@@ -1,12 +1,12 @@
--- This file has been generated from package.yaml by hpack version 0.21.2.
+-- This file has been generated from package.yaml by hpack version 0.28.2.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 4ecd761e07cb906fa23f7c69e728be19cfd4d7d067f5860ff640827b44f5dfaf
+-- hash: 5225259f70e6c6df5a7ffab92dc1a70e87f7bd25284107c3f5009f1659d4a466
 
 name:           cachix
-version:        0.1.0.0
-description:    Please see the README on Github at <https://github.com/cachix/cachix#readme>
+version:        0.1.0.1
+synopsis:       Command line client for Nix binary cache hosting https://cachix.org
 homepage:       https://github.com/cachix/cachix#readme
 bug-reports:    https://github.com/cachix/cachix/issues
 author:         Domen Kožar
@@ -16,7 +16,6 @@
 license-file:   LICENSE
 build-type:     Simple
 cabal-version:  >= 1.10
-
 extra-source-files:
     ChangeLog.md
     README.md
@@ -136,6 +135,7 @@
     , uri-bytestring
     , versions
   default-language: Haskell2010
+  build-tool-depends: hspec-discover:hspec-discover
 
 test-suite cachix-test
   type: exitcode-stdio-1.0
diff --git a/src/Cachix/Client.hs b/src/Cachix/Client.hs
--- a/src/Cachix/Client.hs
+++ b/src/Cachix/Client.hs
@@ -34,7 +34,7 @@
 customManagerSettings = tlsManagerSettings
   { managerResponseTimeout = responseTimeoutNone
   -- managerModifyRequest :: Request -> IO Request
-  , managerModifyRequest = \request -> return $ setRequestHeader "User-Agent" [toS cachixVersion] request
+  , managerModifyRequest = return . setRequestHeader "User-Agent" [toS cachixVersion]
   }
 
 cachixVersion :: Text
diff --git a/src/Cachix/Client/Commands.hs b/src/Cachix/Client/Commands.hs
--- a/src/Cachix/Client/Commands.hs
+++ b/src/Cachix/Client/Commands.hs
@@ -1,4 +1,5 @@
 {-# LANGUAGE QuasiQuotes #-}
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE DataKinds #-}
 {-# LANGUAGE TypeOperators #-}
 module Cachix.Client.Commands
@@ -162,11 +163,21 @@
   forever $ threadDelay 1000000
   where
     action :: Action
-    action (Removed fp _) = pushStorePath env config name $ toS $ dropEnd 5 fp
+#if MIN_VERSION_fsnotify(0,3,0)
+    action (Removed fp _ _) =
+#else
+    action (Removed fp _) =
+#endif
+      pushStorePath env config name $ toS $ dropEnd 5 fp
     action _ = return ()
 
     filterF :: ActionPredicate
-    filterF (Removed fp _) | ".lock" `isSuffixOf` fp = True
+#if MIN_VERSION_fsnotify(0,3,0)
+    filterF (Removed fp _ _)
+#else
+    filterF (Removed fp _)
+#endif
+      | ".lock" `isSuffixOf` fp = True
     filterF _ = False
 
     dropEnd :: Int -> [a] -> [a]
diff --git a/src/Cachix/Client/InstallationMode.hs b/src/Cachix/Client/InstallationMode.hs
--- a/src/Cachix/Client/InstallationMode.hs
+++ b/src/Cachix/Client/InstallationMode.hs
@@ -50,8 +50,8 @@
 getInstallationMode NixEnv{..}
   | nixMode == Nix1XX = UnsupportedNix1X
   | isNixOS && isRoot = EchoNixOS
-  | isNixOS && (not isTrusted) = EchoNixOSWithTrustedUser
-  | (not isNixOS) && isRoot = Install NixConf.Global
+  | isNixOS && not isTrusted = EchoNixOSWithTrustedUser
+  | not isNixOS && isRoot = Install NixConf.Global
   | nixMode == Nix20 = Nix20RequiresSudo
   | isTrusted = Install NixConf.Local
   | not isTrusted = UntrustedRequiresSudo
@@ -107,11 +107,11 @@
   user <- getUser
   -- to detect single user installations
   permissions <- getPermissions "/nix/store"
-  unless (groups == []) $ do
+  unless (null groups) $ do
     -- TODO: support Nix group syntax
     putText "Warn: cachix doesn't yet support checking if user is trusted via groups, so it will recommend sudo"
     putStrLn $ "Warn: groups found " <> T.intercalate "," groups
-  return $ (writable permissions) || (user `elem` users)
+  return $ writable permissions || user `elem` users
   where
     groups = filter (\u -> T.head u == '@') users
 
diff --git a/src/Cachix/Client/NixConf.hs b/src/Cachix/Client/NixConf.hs
--- a/src/Cachix/Client/NixConf.hs
+++ b/src/Cachix/Client/NixConf.hs
@@ -50,15 +50,15 @@
 type NixConf = NixConfG [NixConfLine]
 
 readLines :: [NixConf] -> (NixConfLine -> Maybe [Text]) -> [Text]
-readLines nixconfs predicate = concat $ fmap f nixconfs
+readLines nixconfs predicate = concatMap f nixconfs
   where
     f (NixConf xs) = foldl foldIt [] xs
 
     foldIt :: [Text] -> NixConfLine -> [Text]
-    foldIt prev new = prev <> (fromMaybe [] $ predicate new)
+    foldIt prev new = prev <> fromMaybe [] (predicate new)
 
 writeLines :: (NixConfLine -> Maybe [Text]) -> NixConfLine -> NixConf -> NixConf
-writeLines predicate addition nixconf = fmap f nixconf
+writeLines predicate addition = fmap f
   where
     f x = filter (isNothing . predicate) x <> [addition]
 
diff --git a/test/InstallationModeSpec.hs b/test/InstallationModeSpec.hs
--- a/test/InstallationModeSpec.hs
+++ b/test/InstallationModeSpec.hs
@@ -9,86 +9,85 @@
 
 
 spec :: Spec
-spec = do
-  describe "getInstallationMode" $ do
-    it "Nix 1.X is unsupported" $
-      let
-        nixenv = NixEnv
-          { nixMode = Nix1XX
-          , isTrusted = False -- any
-          , isRoot = False -- any
-          , isNixOS = False -- any
-          }
-      in getInstallationMode nixenv `shouldBe` UnsupportedNix1X
-    it "NixOS with root prints configuration" $
-      let
-        nixenv = NixEnv
-          { nixMode = Nix20 -- any except 1.0
-          , isTrusted = True -- any
-          , isRoot = True
-          , isNixOS = True
-          }
-      in getInstallationMode nixenv `shouldBe` EchoNixOS
-    it "NixOS without trust prints configuration plus trust" $
-      let
-        nixenv = NixEnv
-          { nixMode = Nix20
-          , isTrusted = False
-          , isRoot = False
-          , isNixOS = True
-          }
-      in getInstallationMode nixenv `shouldBe` EchoNixOSWithTrustedUser
-    it "NixOS non-root trusted results into local install" $
-      let
-        nixenv = NixEnv
-          { nixMode = Nix201
-          , isTrusted = True
-          , isRoot = False
-          , isNixOS = True
-          }
-      in getInstallationMode nixenv `shouldBe` Install NixConf.Local
-    it "non-NixOS root results into global install" $
-      let
-        nixenv = NixEnv
-          { nixMode = Nix201
-          , isTrusted = True
-          , isRoot = True
-          , isNixOS = False
-          }
-      in getInstallationMode nixenv `shouldBe` Install NixConf.Global
-    it "non-NixOS non-root trusted results into local install" $
-      let
-        nixenv = NixEnv
-          { nixMode = Nix201
-          , isTrusted = True
-          , isRoot = False
-          , isNixOS = False
-          }
-      in getInstallationMode nixenv `shouldBe` Install NixConf.Local
-    it "non-NixOS non-root non-trusted results into required sudo" $
-      let
-        nixenv = NixEnv
-          { nixMode = Nix201
-          , isTrusted = False
-          , isRoot = False
-          , isNixOS = False
-          }
-      in getInstallationMode nixenv `shouldBe` UntrustedRequiresSudo
-    it "non-NixOS non-root non-trusted on Nix 2.0.0 results into required sudo with upgrade warning" $
-      let
-        nixenv = NixEnv
-          { nixMode = Nix20
-          , isTrusted = False
-          , isRoot = False
-          , isNixOS = False
-          }
-      in getInstallationMode nixenv `shouldBe` Nix20RequiresSudo
-    it "non-NixOS non-root trusted on Nix 2.0.0 results into required sudo with upgrade warning" $
-      let
-        nixenv = NixEnv
-          { nixMode = Nix20
-          , isTrusted = True
-          , isRoot = False
-          , isNixOS = False
-          }
-      in getInstallationMode nixenv `shouldBe` Nix20RequiresSudo
+spec = describe "getInstallationMode" $ do
+  it "Nix 1.X is unsupported" $
+    let
+      nixenv = NixEnv
+        { nixMode = Nix1XX
+        , isTrusted = False -- any
+        , isRoot = False -- any
+        , isNixOS = False -- any
+        }
+    in getInstallationMode nixenv `shouldBe` UnsupportedNix1X
+  it "NixOS with root prints configuration" $
+    let
+      nixenv = NixEnv
+        { nixMode = Nix20 -- any except 1.0
+        , isTrusted = True -- any
+        , isRoot = True
+        , isNixOS = True
+        }
+    in getInstallationMode nixenv `shouldBe` EchoNixOS
+  it "NixOS without trust prints configuration plus trust" $
+    let
+      nixenv = NixEnv
+        { nixMode = Nix20
+        , isTrusted = False
+        , isRoot = False
+        , isNixOS = True
+        }
+    in getInstallationMode nixenv `shouldBe` EchoNixOSWithTrustedUser
+  it "NixOS non-root trusted results into local install" $
+    let
+      nixenv = NixEnv
+        { nixMode = Nix201
+        , isTrusted = True
+        , isRoot = False
+        , isNixOS = True
+        }
+    in getInstallationMode nixenv `shouldBe` Install NixConf.Local
+  it "non-NixOS root results into global install" $
+    let
+      nixenv = NixEnv
+        { nixMode = Nix201
+        , isTrusted = True
+        , isRoot = True
+        , isNixOS = False
+        }
+    in getInstallationMode nixenv `shouldBe` Install NixConf.Global
+  it "non-NixOS non-root trusted results into local install" $
+    let
+      nixenv = NixEnv
+        { nixMode = Nix201
+        , isTrusted = True
+        , isRoot = False
+        , isNixOS = False
+        }
+    in getInstallationMode nixenv `shouldBe` Install NixConf.Local
+  it "non-NixOS non-root non-trusted results into required sudo" $
+    let
+      nixenv = NixEnv
+        { nixMode = Nix201
+        , isTrusted = False
+        , isRoot = False
+        , isNixOS = False
+        }
+    in getInstallationMode nixenv `shouldBe` UntrustedRequiresSudo
+  it "non-NixOS non-root non-trusted on Nix 2.0.0 results into required sudo with upgrade warning" $
+    let
+      nixenv = NixEnv
+        { nixMode = Nix20
+        , isTrusted = False
+        , isRoot = False
+        , isNixOS = False
+        }
+    in getInstallationMode nixenv `shouldBe` Nix20RequiresSudo
+  it "non-NixOS non-root trusted on Nix 2.0.0 results into required sudo with upgrade warning" $
+    let
+      nixenv = NixEnv
+        { nixMode = Nix20
+        , isTrusted = True
+        , isRoot = False
+        , isNixOS = False
+        }
+    in getInstallationMode nixenv `shouldBe` Nix20RequiresSudo
diff --git a/test/NixVersionSpec.hs b/test/NixVersionSpec.hs
--- a/test/NixVersionSpec.hs
+++ b/test/NixVersionSpec.hs
@@ -6,17 +6,16 @@
 import Cachix.Client.NixVersion
 
 spec :: Spec
-spec = do
-  describe "parseNixMode" $ do
-    it "parses 'nix-env (Nix) 2.0' as Nix20" $
-      parseNixMode "nix-env (Nix) 2.0" `shouldBe` Right Nix20
-    it "parses 'nix-env (Nix) 2.0.1' as Nix201" $
-      parseNixMode "nix-env (Nix) 2.0.1" `shouldBe` Right Nix201
-    it "parses 'nix-env (Nix) 1.11.13' as Nix1XX" $
-      parseNixMode "nix-env (Nix) 1.11.13" `shouldBe` Right Nix1XX
-    it "parses 'nix-env (Nix) 2.0.5' as Nix201" $
-      parseNixMode "nix-env (Nix) 2.0.5" `shouldBe` Right Nix201
-    it "parses 'nix-env (Nix) 2.0.1pre6053_444b921' as Nix201" $
-      parseNixMode "nix-env (Nix) 2.0.1pre6053_444b921" `shouldBe` Right Nix201
-    it "fails with unknown string 'foobar'" $
-      parseNixMode "foobar" `shouldBe` Left "Couldn't parse 'nix-env --version' output: foobar"
+spec = describe "parseNixMode" $ do
+  it "parses 'nix-env (Nix) 2.0' as Nix20" $
+    parseNixMode "nix-env (Nix) 2.0" `shouldBe` Right Nix20
+  it "parses 'nix-env (Nix) 2.0.1' as Nix201" $
+    parseNixMode "nix-env (Nix) 2.0.1" `shouldBe` Right Nix201
+  it "parses 'nix-env (Nix) 1.11.13' as Nix1XX" $
+    parseNixMode "nix-env (Nix) 1.11.13" `shouldBe` Right Nix1XX
+  it "parses 'nix-env (Nix) 2.0.5' as Nix201" $
+    parseNixMode "nix-env (Nix) 2.0.5" `shouldBe` Right Nix201
+  it "parses 'nix-env (Nix) 2.0.1pre6053_444b921' as Nix201" $
+    parseNixMode "nix-env (Nix) 2.0.1pre6053_444b921" `shouldBe` Right Nix201
+  it "fails with unknown string 'foobar'" $
+    parseNixMode "foobar" `shouldBe` Left "Couldn't parse 'nix-env --version' output: foobar"