diff --git a/haskell/leap/.exercism/config.json b/haskell/leap/.exercism/config.json
new file mode 100644
index 0000000..9a80083
--- /dev/null
+++ b/haskell/leap/.exercism/config.json
@@ -0,0 +1,32 @@
+{
+  "blurb": "Given a year, report if it is a leap year.",
+  "authors": [
+    "etrepum"
+  ],
+  "contributors": [
+    "iHiD",
+    "karen-pal",
+    "kytrinyx",
+    "navossoc",
+    "paulrex",
+    "petertseng",
+    "ppartarr",
+    "rbasso",
+    "sshine",
+    "tejasbubane",
+    "tofische"
+  ],
+  "files": {
+    "solution": [
+      "src/LeapYear.hs"
+    ],
+    "test": [
+      "test/Tests.hs"
+    ],
+    "example": [
+      "examples/success-standard/src/LeapYear.hs"
+    ]
+  },
+  "source": "JavaRanch Cattle Drive, exercise 3",
+  "source_url": "http://www.javaranch.com/leap.jsp"
+}
diff --git a/haskell/leap/.exercism/metadata.json b/haskell/leap/.exercism/metadata.json
new file mode 100644
index 0000000..4e98f70
--- /dev/null
+++ b/haskell/leap/.exercism/metadata.json
@@ -0,0 +1 @@
+{"track":"haskell","exercise":"leap","id":"94a6f31b1bcd4b52aa6eb98681d2859e","url":"https://exercism.org/tracks/haskell/exercises/leap","handle":"JBiason","is_requester":true,"auto_approve":false}
\ No newline at end of file
diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build-lock b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build-lock
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index 0000000..e69de29
diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/LeapYear.dyn_hi b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/LeapYear.dyn_hi
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diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/Paths_leap.dyn_hi b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/Paths_leap.dyn_hi
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diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/Paths_leap.dyn_o b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/Paths_leap.dyn_o
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diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/Paths_leap.hi b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/Paths_leap.hi
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diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/Paths_leap.o b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/Paths_leap.o
new file mode 100644
index 0000000..e7b6006
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diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/autogen/Paths_leap.hs b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/autogen/Paths_leap.hs
new file mode 100644
index 0000000..b9c9b6f
--- /dev/null
+++ b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/autogen/Paths_leap.hs
@@ -0,0 +1,50 @@
+{-# LANGUAGE CPP #-}
+{-# LANGUAGE NoRebindableSyntax #-}
+{-# OPTIONS_GHC -fno-warn-missing-import-lists #-}
+module Paths_leap (
+    version,
+    getBinDir, getLibDir, getDynLibDir, getDataDir, getLibexecDir,
+    getDataFileName, getSysconfDir
+  ) where
+
+import qualified Control.Exception as Exception
+import Data.Version (Version(..))
+import System.Environment (getEnv)
+import Prelude
+
+#if defined(VERSION_base)
+
+#if MIN_VERSION_base(4,0,0)
+catchIO :: IO a -> (Exception.IOException -> IO a) -> IO a
+#else
+catchIO :: IO a -> (Exception.Exception -> IO a) -> IO a
+#endif
+
+#else
+catchIO :: IO a -> (Exception.IOException -> IO a) -> IO a
+#endif
+catchIO = Exception.catch
+
+version :: Version
+version = Version [1,6,0,10] []
+bindir, libdir, dynlibdir, datadir, libexecdir, sysconfdir :: FilePath
+
+bindir     = "/var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/bin"
+libdir     = "/var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/lib/x86_64-linux-ghc-8.8.4/leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp"
+dynlibdir  = "/var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/lib/x86_64-linux-ghc-8.8.4"
+datadir    = "/var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/share/x86_64-linux-ghc-8.8.4/leap-1.6.0.10"
+libexecdir = "/var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/libexec/x86_64-linux-ghc-8.8.4/leap-1.6.0.10"
+sysconfdir = "/var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/etc"
+
+getBinDir, getLibDir, getDynLibDir, getDataDir, getLibexecDir, getSysconfDir :: IO FilePath
+getBinDir = catchIO (getEnv "leap_bindir") (\_ -> return bindir)
+getLibDir = catchIO (getEnv "leap_libdir") (\_ -> return libdir)
+getDynLibDir = catchIO (getEnv "leap_dynlibdir") (\_ -> return dynlibdir)
+getDataDir = catchIO (getEnv "leap_datadir") (\_ -> return datadir)
+getLibexecDir = catchIO (getEnv "leap_libexecdir") (\_ -> return libexecdir)
+getSysconfDir = catchIO (getEnv "leap_sysconfdir") (\_ -> return sysconfdir)
+
+getDataFileName :: FilePath -> IO FilePath
+getDataFileName name = do
+  dir <- getDataDir
+  return (dir ++ "/" ++ name)
diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/autogen/cabal_macros.h b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/autogen/cabal_macros.h
new file mode 100644
index 0000000..0f667e8
--- /dev/null
+++ b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/autogen/cabal_macros.h
@@ -0,0 +1,132 @@
+/* DO NOT EDIT: This file is automatically generated by Cabal */
+
+/* package leap-1.6.0.10 */
+#ifndef VERSION_leap
+#define VERSION_leap "1.6.0.10"
+#endif /* VERSION_leap */
+#ifndef MIN_VERSION_leap
+#define MIN_VERSION_leap(major1,major2,minor) (\
+  (major1) <  1 || \
+  (major1) == 1 && (major2) <  6 || \
+  (major1) == 1 && (major2) == 6 && (minor) <= 0)
+#endif /* MIN_VERSION_leap */
+
+/* package base-4.13.0.0 */
+#ifndef VERSION_base
+#define VERSION_base "4.13.0.0"
+#endif /* VERSION_base */
+#ifndef MIN_VERSION_base
+#define MIN_VERSION_base(major1,major2,minor) (\
+  (major1) <  4 || \
+  (major1) == 4 && (major2) <  13 || \
+  (major1) == 4 && (major2) == 13 && (minor) <= 0)
+#endif /* MIN_VERSION_base */
+
+/* tool gcc-11 */
+#ifndef TOOL_VERSION_gcc
+#define TOOL_VERSION_gcc "11"
+#endif /* TOOL_VERSION_gcc */
+#ifndef MIN_TOOL_VERSION_gcc
+#define MIN_TOOL_VERSION_gcc(major1,major2,minor) (\
+  (major1) <  11 || \
+  (major1) == 11 && (major2) <  0 || \
+  (major1) == 11 && (major2) == 0 && (minor) <= 0)
+#endif /* MIN_TOOL_VERSION_gcc */
+
+/* tool ghc-8.8.4 */
+#ifndef TOOL_VERSION_ghc
+#define TOOL_VERSION_ghc "8.8.4"
+#endif /* TOOL_VERSION_ghc */
+#ifndef MIN_TOOL_VERSION_ghc
+#define MIN_TOOL_VERSION_ghc(major1,major2,minor) (\
+  (major1) <  8 || \
+  (major1) == 8 && (major2) <  8 || \
+  (major1) == 8 && (major2) == 8 && (minor) <= 4)
+#endif /* MIN_TOOL_VERSION_ghc */
+
+/* tool ghc-pkg-8.8.4 */
+#ifndef TOOL_VERSION_ghc_pkg
+#define TOOL_VERSION_ghc_pkg "8.8.4"
+#endif /* TOOL_VERSION_ghc_pkg */
+#ifndef MIN_TOOL_VERSION_ghc_pkg
+#define MIN_TOOL_VERSION_ghc_pkg(major1,major2,minor) (\
+  (major1) <  8 || \
+  (major1) == 8 && (major2) <  8 || \
+  (major1) == 8 && (major2) == 8 && (minor) <= 4)
+#endif /* MIN_TOOL_VERSION_ghc_pkg */
+
+/* tool haddock-2.23.0 */
+#ifndef TOOL_VERSION_haddock
+#define TOOL_VERSION_haddock "2.23.0"
+#endif /* TOOL_VERSION_haddock */
+#ifndef MIN_TOOL_VERSION_haddock
+#define MIN_TOOL_VERSION_haddock(major1,major2,minor) (\
+  (major1) <  2 || \
+  (major1) == 2 && (major2) <  23 || \
+  (major1) == 2 && (major2) == 23 && (minor) <= 0)
+#endif /* MIN_TOOL_VERSION_haddock */
+
+/* tool hpc-0.67 */
+#ifndef TOOL_VERSION_hpc
+#define TOOL_VERSION_hpc "0.67"
+#endif /* TOOL_VERSION_hpc */
+#ifndef MIN_TOOL_VERSION_hpc
+#define MIN_TOOL_VERSION_hpc(major1,major2,minor) (\
+  (major1) <  0 || \
+  (major1) == 0 && (major2) <  67 || \
+  (major1) == 0 && (major2) == 67 && (minor) <= 0)
+#endif /* MIN_TOOL_VERSION_hpc */
+
+/* tool hsc2hs-0.68.7 */
+#ifndef TOOL_VERSION_hsc2hs
+#define TOOL_VERSION_hsc2hs "0.68.7"
+#endif /* TOOL_VERSION_hsc2hs */
+#ifndef MIN_TOOL_VERSION_hsc2hs
+#define MIN_TOOL_VERSION_hsc2hs(major1,major2,minor) (\
+  (major1) <  0 || \
+  (major1) == 0 && (major2) <  68 || \
+  (major1) == 0 && (major2) == 68 && (minor) <= 7)
+#endif /* MIN_TOOL_VERSION_hsc2hs */
+
+/* tool pkg-config-1.7.3 */
+#ifndef TOOL_VERSION_pkg_config
+#define TOOL_VERSION_pkg_config "1.7.3"
+#endif /* TOOL_VERSION_pkg_config */
+#ifndef MIN_TOOL_VERSION_pkg_config
+#define MIN_TOOL_VERSION_pkg_config(major1,major2,minor) (\
+  (major1) <  1 || \
+  (major1) == 1 && (major2) <  7 || \
+  (major1) == 1 && (major2) == 7 && (minor) <= 3)
+#endif /* MIN_TOOL_VERSION_pkg_config */
+
+/* tool runghc-8.8.4 */
+#ifndef TOOL_VERSION_runghc
+#define TOOL_VERSION_runghc "8.8.4"
+#endif /* TOOL_VERSION_runghc */
+#ifndef MIN_TOOL_VERSION_runghc
+#define MIN_TOOL_VERSION_runghc(major1,major2,minor) (\
+  (major1) <  8 || \
+  (major1) == 8 && (major2) <  8 || \
+  (major1) == 8 && (major2) == 8 && (minor) <= 4)
+#endif /* MIN_TOOL_VERSION_runghc */
+
+/* tool strip-2.35 */
+#ifndef TOOL_VERSION_strip
+#define TOOL_VERSION_strip "2.35"
+#endif /* TOOL_VERSION_strip */
+#ifndef MIN_TOOL_VERSION_strip
+#define MIN_TOOL_VERSION_strip(major1,major2,minor) (\
+  (major1) <  2 || \
+  (major1) == 2 && (major2) <  35 || \
+  (major1) == 2 && (major2) == 35 && (minor) <= 0)
+#endif /* MIN_TOOL_VERSION_strip */
+
+#ifndef CURRENT_PACKAGE_KEY
+#define CURRENT_PACKAGE_KEY "leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp"
+#endif /* CURRENT_PACKAGE_KEY */
+#ifndef CURRENT_COMPONENT_ID
+#define CURRENT_COMPONENT_ID "leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp"
+#endif /* CURRENT_COMPONENT_ID */
+#ifndef CURRENT_PACKAGE_VERSION
+#define CURRENT_PACKAGE_VERSION "1.6.0.10"
+#endif /* CURRENT_PACKAGE_VERSION */
diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/libHSleap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp-ghc8.8.4.so b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/libHSleap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp-ghc8.8.4.so
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diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/libHSleap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp.a b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/libHSleap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp.a
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diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/autogen/Paths_leap.hs b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/autogen/Paths_leap.hs
new file mode 100644
index 0000000..541b922
--- /dev/null
+++ b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/autogen/Paths_leap.hs
@@ -0,0 +1,50 @@
+{-# LANGUAGE CPP #-}
+{-# LANGUAGE NoRebindableSyntax #-}
+{-# OPTIONS_GHC -fno-warn-missing-import-lists #-}
+module Paths_leap (
+    version,
+    getBinDir, getLibDir, getDynLibDir, getDataDir, getLibexecDir,
+    getDataFileName, getSysconfDir
+  ) where
+
+import qualified Control.Exception as Exception
+import Data.Version (Version(..))
+import System.Environment (getEnv)
+import Prelude
+
+#if defined(VERSION_base)
+
+#if MIN_VERSION_base(4,0,0)
+catchIO :: IO a -> (Exception.IOException -> IO a) -> IO a
+#else
+catchIO :: IO a -> (Exception.Exception -> IO a) -> IO a
+#endif
+
+#else
+catchIO :: IO a -> (Exception.IOException -> IO a) -> IO a
+#endif
+catchIO = Exception.catch
+
+version :: Version
+version = Version [1,6,0,10] []
+bindir, libdir, dynlibdir, datadir, libexecdir, sysconfdir :: FilePath
+
+bindir     = "/var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/bin"
+libdir     = "/var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/lib/x86_64-linux-ghc-8.8.4/leap-1.6.0.10-1OMYOoaCAf7BtVC4aNe49e-test"
+dynlibdir  = "/var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/lib/x86_64-linux-ghc-8.8.4"
+datadir    = "/var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/share/x86_64-linux-ghc-8.8.4/leap-1.6.0.10"
+libexecdir = "/var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/libexec/x86_64-linux-ghc-8.8.4/leap-1.6.0.10"
+sysconfdir = "/var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/etc"
+
+getBinDir, getLibDir, getDynLibDir, getDataDir, getLibexecDir, getSysconfDir :: IO FilePath
+getBinDir = catchIO (getEnv "leap_bindir") (\_ -> return bindir)
+getLibDir = catchIO (getEnv "leap_libdir") (\_ -> return libdir)
+getDynLibDir = catchIO (getEnv "leap_dynlibdir") (\_ -> return dynlibdir)
+getDataDir = catchIO (getEnv "leap_datadir") (\_ -> return datadir)
+getLibexecDir = catchIO (getEnv "leap_libexecdir") (\_ -> return libexecdir)
+getSysconfDir = catchIO (getEnv "leap_sysconfdir") (\_ -> return sysconfdir)
+
+getDataFileName :: FilePath -> IO FilePath
+getDataFileName name = do
+  dir <- getDataDir
+  return (dir ++ "/" ++ name)
diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/autogen/cabal_macros.h b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/autogen/cabal_macros.h
new file mode 100644
index 0000000..32dea81
--- /dev/null
+++ b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/autogen/cabal_macros.h
@@ -0,0 +1,151 @@
+/* DO NOT EDIT: This file is automatically generated by Cabal */
+
+/* package leap-1.6.0.10 */
+#ifndef VERSION_leap
+#define VERSION_leap "1.6.0.10"
+#endif /* VERSION_leap */
+#ifndef MIN_VERSION_leap
+#define MIN_VERSION_leap(major1,major2,minor) (\
+  (major1) <  1 || \
+  (major1) == 1 && (major2) <  6 || \
+  (major1) == 1 && (major2) == 6 && (minor) <= 0)
+#endif /* MIN_VERSION_leap */
+
+/* package base-4.13.0.0 */
+#ifndef VERSION_base
+#define VERSION_base "4.13.0.0"
+#endif /* VERSION_base */
+#ifndef MIN_VERSION_base
+#define MIN_VERSION_base(major1,major2,minor) (\
+  (major1) <  4 || \
+  (major1) == 4 && (major2) <  13 || \
+  (major1) == 4 && (major2) == 13 && (minor) <= 0)
+#endif /* MIN_VERSION_base */
+
+/* package hspec-2.7.4 */
+#ifndef VERSION_hspec
+#define VERSION_hspec "2.7.4"
+#endif /* VERSION_hspec */
+#ifndef MIN_VERSION_hspec
+#define MIN_VERSION_hspec(major1,major2,minor) (\
+  (major1) <  2 || \
+  (major1) == 2 && (major2) <  7 || \
+  (major1) == 2 && (major2) == 7 && (minor) <= 4)
+#endif /* MIN_VERSION_hspec */
+
+/* package leap-1.6.0.10 */
+#ifndef VERSION_leap
+#define VERSION_leap "1.6.0.10"
+#endif /* VERSION_leap */
+#ifndef MIN_VERSION_leap
+#define MIN_VERSION_leap(major1,major2,minor) (\
+  (major1) <  1 || \
+  (major1) == 1 && (major2) <  6 || \
+  (major1) == 1 && (major2) == 6 && (minor) <= 0)
+#endif /* MIN_VERSION_leap */
+
+/* tool gcc-11 */
+#ifndef TOOL_VERSION_gcc
+#define TOOL_VERSION_gcc "11"
+#endif /* TOOL_VERSION_gcc */
+#ifndef MIN_TOOL_VERSION_gcc
+#define MIN_TOOL_VERSION_gcc(major1,major2,minor) (\
+  (major1) <  11 || \
+  (major1) == 11 && (major2) <  0 || \
+  (major1) == 11 && (major2) == 0 && (minor) <= 0)
+#endif /* MIN_TOOL_VERSION_gcc */
+
+/* tool ghc-8.8.4 */
+#ifndef TOOL_VERSION_ghc
+#define TOOL_VERSION_ghc "8.8.4"
+#endif /* TOOL_VERSION_ghc */
+#ifndef MIN_TOOL_VERSION_ghc
+#define MIN_TOOL_VERSION_ghc(major1,major2,minor) (\
+  (major1) <  8 || \
+  (major1) == 8 && (major2) <  8 || \
+  (major1) == 8 && (major2) == 8 && (minor) <= 4)
+#endif /* MIN_TOOL_VERSION_ghc */
+
+/* tool ghc-pkg-8.8.4 */
+#ifndef TOOL_VERSION_ghc_pkg
+#define TOOL_VERSION_ghc_pkg "8.8.4"
+#endif /* TOOL_VERSION_ghc_pkg */
+#ifndef MIN_TOOL_VERSION_ghc_pkg
+#define MIN_TOOL_VERSION_ghc_pkg(major1,major2,minor) (\
+  (major1) <  8 || \
+  (major1) == 8 && (major2) <  8 || \
+  (major1) == 8 && (major2) == 8 && (minor) <= 4)
+#endif /* MIN_TOOL_VERSION_ghc_pkg */
+
+/* tool haddock-2.23.0 */
+#ifndef TOOL_VERSION_haddock
+#define TOOL_VERSION_haddock "2.23.0"
+#endif /* TOOL_VERSION_haddock */
+#ifndef MIN_TOOL_VERSION_haddock
+#define MIN_TOOL_VERSION_haddock(major1,major2,minor) (\
+  (major1) <  2 || \
+  (major1) == 2 && (major2) <  23 || \
+  (major1) == 2 && (major2) == 23 && (minor) <= 0)
+#endif /* MIN_TOOL_VERSION_haddock */
+
+/* tool hpc-0.67 */
+#ifndef TOOL_VERSION_hpc
+#define TOOL_VERSION_hpc "0.67"
+#endif /* TOOL_VERSION_hpc */
+#ifndef MIN_TOOL_VERSION_hpc
+#define MIN_TOOL_VERSION_hpc(major1,major2,minor) (\
+  (major1) <  0 || \
+  (major1) == 0 && (major2) <  67 || \
+  (major1) == 0 && (major2) == 67 && (minor) <= 0)
+#endif /* MIN_TOOL_VERSION_hpc */
+
+/* tool hsc2hs-0.68.7 */
+#ifndef TOOL_VERSION_hsc2hs
+#define TOOL_VERSION_hsc2hs "0.68.7"
+#endif /* TOOL_VERSION_hsc2hs */
+#ifndef MIN_TOOL_VERSION_hsc2hs
+#define MIN_TOOL_VERSION_hsc2hs(major1,major2,minor) (\
+  (major1) <  0 || \
+  (major1) == 0 && (major2) <  68 || \
+  (major1) == 0 && (major2) == 68 && (minor) <= 7)
+#endif /* MIN_TOOL_VERSION_hsc2hs */
+
+/* tool pkg-config-1.7.3 */
+#ifndef TOOL_VERSION_pkg_config
+#define TOOL_VERSION_pkg_config "1.7.3"
+#endif /* TOOL_VERSION_pkg_config */
+#ifndef MIN_TOOL_VERSION_pkg_config
+#define MIN_TOOL_VERSION_pkg_config(major1,major2,minor) (\
+  (major1) <  1 || \
+  (major1) == 1 && (major2) <  7 || \
+  (major1) == 1 && (major2) == 7 && (minor) <= 3)
+#endif /* MIN_TOOL_VERSION_pkg_config */
+
+/* tool runghc-8.8.4 */
+#ifndef TOOL_VERSION_runghc
+#define TOOL_VERSION_runghc "8.8.4"
+#endif /* TOOL_VERSION_runghc */
+#ifndef MIN_TOOL_VERSION_runghc
+#define MIN_TOOL_VERSION_runghc(major1,major2,minor) (\
+  (major1) <  8 || \
+  (major1) == 8 && (major2) <  8 || \
+  (major1) == 8 && (major2) == 8 && (minor) <= 4)
+#endif /* MIN_TOOL_VERSION_runghc */
+
+/* tool strip-2.35 */
+#ifndef TOOL_VERSION_strip
+#define TOOL_VERSION_strip "2.35"
+#endif /* TOOL_VERSION_strip */
+#ifndef MIN_TOOL_VERSION_strip
+#define MIN_TOOL_VERSION_strip(major1,major2,minor) (\
+  (major1) <  2 || \
+  (major1) == 2 && (major2) <  35 || \
+  (major1) == 2 && (major2) == 35 && (minor) <= 0)
+#endif /* MIN_TOOL_VERSION_strip */
+
+#ifndef CURRENT_COMPONENT_ID
+#define CURRENT_COMPONENT_ID "leap-1.6.0.10-1OMYOoaCAf7BtVC4aNe49e-test"
+#endif /* CURRENT_COMPONENT_ID */
+#ifndef CURRENT_PACKAGE_VERSION
+#define CURRENT_PACKAGE_VERSION "1.6.0.10"
+#endif /* CURRENT_PACKAGE_VERSION */
diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/test b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/test
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index 0000000..5dd9968
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diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/test-tmp/Main.hi b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/test-tmp/Main.hi
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diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/test-tmp/Main.o b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/test-tmp/Main.o
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diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/test-tmp/Paths_leap.hi b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/test-tmp/Paths_leap.hi
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index 0000000..5b90043
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diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/test-tmp/Paths_leap.o b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build/test/test-tmp/Paths_leap.o
new file mode 100644
index 0000000..834fd96
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diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/package.conf.inplace/leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp.conf b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/package.conf.inplace/leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp.conf
new file mode 100644
index 0000000..7da1467
--- /dev/null
+++ b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/package.conf.inplace/leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp.conf
@@ -0,0 +1,26 @@
+name:                 leap
+version:              1.6.0.10
+visibility:           public
+id:                   leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp
+key:                  leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp
+abi:                  inplace
+exposed:              True
+exposed-modules:      LeapYear
+hidden-modules:       Paths_leap
+import-dirs:
+    /var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build
+
+library-dirs:
+    /var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build
+
+dynamic-library-dirs:
+    /var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/build
+
+data-dir:             /var/home/jbiason/Projects/exercism/haskell/leap
+hs-libraries:         HSleap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp
+depends:              base-4.13.0.0
+haddock-interfaces:
+    /var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/doc/html/leap/leap.haddock
+
+haddock-html:
+    /var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/doc/html/leap
diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/package.conf.inplace/package.cache b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/package.conf.inplace/package.cache
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index 0000000..59d3b50
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diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/package.conf.inplace/package.cache.lock b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/package.conf.inplace/package.cache.lock
new file mode 100644
index 0000000..e69de29
diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/setup-config b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/setup-config
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index 0000000..a7d39cc
Binary files /dev/null and b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/setup-config differ
diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/stack-build-caches/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/lib b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/stack-build-caches/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/lib
new file mode 100644
index 0000000..c3ba65e
--- /dev/null
+++ b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/stack-build-caches/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/lib
@@ -0,0 +1,12 @@
+/var/home/jbiason/Projects/exercism/haskell/leap/src/LeapYear.hs:
+  hash: 578ee19067ba10c0e09676fa319ea32d30ac02c145102ffe0d5b189ab76a0f75
+  size: 219
+  modtime: 1633536936
+/var/home/jbiason/Projects/exercism/haskell/leap/leap.cabal:
+  hash: feacf24657befef4b966f670087ad8acfadaffcba99df7bfdee83721478f91ac
+  size: 602
+  modtime: 1633536883
+/var/home/jbiason/Projects/exercism/haskell/leap/package.yaml:
+  hash: 741adae21e7fab15e96ec98d318f3ec9cbc33dc86f419cd56cd829d6c64a1c54
+  size: 344
+  modtime: 1633536454
diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/stack-build-caches/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/test-test b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/stack-build-caches/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/test-test
new file mode 100644
index 0000000..0b09ac2
--- /dev/null
+++ b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/stack-build-caches/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/test-test
@@ -0,0 +1,12 @@
+/var/home/jbiason/Projects/exercism/haskell/leap/test/Tests.hs:
+  hash: f0e23b421ae686bb35398eb1b91ca2717b945e25cac3203aaa89d09c9ca8cde0
+  size: 2388
+  modtime: 1633536455
+/var/home/jbiason/Projects/exercism/haskell/leap/leap.cabal:
+  hash: feacf24657befef4b966f670087ad8acfadaffcba99df7bfdee83721478f91ac
+  size: 602
+  modtime: 1633536883
+/var/home/jbiason/Projects/exercism/haskell/leap/package.yaml:
+  hash: 741adae21e7fab15e96ec98d318f3ec9cbc33dc86f419cd56cd829d6c64a1c54
+  size: 344
+  modtime: 1633536454
diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/stack-cabal-mod b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/stack-cabal-mod
new file mode 100644
index 0000000..5b04457
--- /dev/null
+++ b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/stack-cabal-mod
@@ -0,0 +1 @@
+Just used for its modification time
\ No newline at end of file
diff --git a/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/stack-test-success b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/stack-test-success
new file mode 100644
index 0000000..0f0c913
--- /dev/null
+++ b/haskell/leap/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/stack-test-success
@@ -0,0 +1 @@
+success
\ No newline at end of file
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diff --git a/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/lib/x86_64-linux-ghc-8.8.4/libHSleap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp-ghc8.8.4.so b/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/lib/x86_64-linux-ghc-8.8.4/libHSleap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp-ghc8.8.4.so
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diff --git a/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/pkgdb/leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp.conf b/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/pkgdb/leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp.conf
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@@ -0,0 +1,28 @@
+name:                 leap
+version:              1.6.0.10
+visibility:           public
+id:                   leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp
+key:                  leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp
+abi:                  542002b3912f27769b396851c059c5d8
+exposed:              True
+exposed-modules:      LeapYear
+hidden-modules:       Paths_leap
+import-dirs:
+    /var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/lib/x86_64-linux-ghc-8.8.4/leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp
+
+library-dirs:
+    /var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/lib/x86_64-linux-ghc-8.8.4/leap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp
+
+dynamic-library-dirs:
+    /var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/lib/x86_64-linux-ghc-8.8.4
+
+data-dir:
+    /var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/share/x86_64-linux-ghc-8.8.4/leap-1.6.0.10
+
+hs-libraries:         HSleap-1.6.0.10-F6KjsdfzSILCp2Aoll2shp
+depends:              base-4.13.0.0
+haddock-interfaces:
+    /var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/doc/leap-1.6.0.10/leap.haddock
+
+haddock-html:
+    /var/home/jbiason/Projects/exercism/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/doc/leap-1.6.0.10
diff --git a/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/pkgdb/package.cache b/haskell/leap/.stack-work/install/x86_64-linux-tinfo6/fb971c408f03a4aa6eda736aa026e53de3540d66efc73bedb1ae6e06b3bc7296/8.8.4/pkgdb/package.cache
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diff --git a/haskell/leap/.stack-work/stack.sqlite3 b/haskell/leap/.stack-work/stack.sqlite3
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diff --git a/haskell/leap/HELP.md b/haskell/leap/HELP.md
new file mode 100644
index 0000000..25d9769
--- /dev/null
+++ b/haskell/leap/HELP.md
@@ -0,0 +1,88 @@
+# Help
+
+## Running the tests
+
+To run the test suite, execute the following command:
+
+```bash
+stack test
+```
+
+#### If you get an error message like this...
+
+```
+No .cabal file found in directory
+```
+
+or
+
+```
+RedownloadInvalidResponse Request {
+...
+}
+ "/home/username/.stack/build-plan/lts-xx.yy.yaml" (Response {responseStatus = Status {statusCode = 404, statusMessage = "Not Found"},
+```
+
+You are probably running an old stack version and need
+to upgrade it. Try running:
+
+```bash
+stack upgrade
+```
+
+Or see other options for upgrading at [Stack documentation](https://docs.haskellstack.org/en/stable/install_and_upgrade/#upgrade).
+
+#### Otherwise, if you get an error message like this...
+
+```
+No compiler found, expected minor version match with...
+Try running "stack setup" to install the correct GHC...
+```
+
+Just do as it says and it will download and install
+the correct compiler version:
+
+```bash
+stack setup
+```
+
+
+If you want to play with your solution in GHCi, just run the command:
+
+```bash
+stack ghci
+```
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit src/LeapYear.hs` command.
+This command will upload your solution to the Exercism website and print the solution page's URL.
+
+It's possible to submit an incomplete solution which allows you to:
+
+- See how others have completed the exercise
+- Request help from a mentor
+
+## Need to get help?
+
+If you'd like help solving the exercise, check the following pages:
+
+- The [Haskell track's documentation](https://exercism.org/docs/tracks/haskell)
+- [Exercism's support channel on gitter](https://gitter.im/exercism/support)
+- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
+
+Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
+
+## Getting Started
+
+Please refer to the [installation](https://exercism.io/tracks/haskell/installation)
+and [learning](https://exercism.io/tracks/haskell/learning) help pages.
+
+## Feedback, Issues, Pull Requests
+
+The [exercism/haskell](https://github.com/exercism/haskell) repository on
+GitHub is the home for all of the Haskell exercises.
+
+If you have feedback about an exercise, or want to help implementing a new
+one, head over there and create an issue.  We'll do our best to help you!
+{{ with .Spec.Credits }}
\ No newline at end of file
diff --git a/haskell/leap/README.md b/haskell/leap/README.md
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+++ b/haskell/leap/README.md
@@ -0,0 +1,56 @@
+# Leap
+
+Welcome to Leap on Exercism's Haskell Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## Instructions
+
+Given a year, report if it is a leap year.
+
+The tricky thing here is that a leap year in the Gregorian calendar occurs:
+
+```text
+on every year that is evenly divisible by 4
+  except every year that is evenly divisible by 100
+    unless the year is also evenly divisible by 400
+```
+
+For example, 1997 is not a leap year, but 1996 is.  1900 is not a leap
+year, but 2000 is.
+
+## Notes
+
+Though our exercise adopts some very simple rules, there is more to
+learn!
+
+For a delightful, four minute explanation of the whole leap year
+phenomenon, go watch [this youtube video][video].
+
+[video]: http://www.youtube.com/watch?v=xX96xng7sAE
+
+To complete this exercise you need to implement the function `isLeapYear`
+that takes a year and determines whether it is a leap year.
+
+## Source
+
+### Created by
+
+- @etrepum
+
+### Contributed to by
+
+- @iHiD
+- @karen-pal
+- @kytrinyx
+- @navossoc
+- @paulrex
+- @petertseng
+- @ppartarr
+- @rbasso
+- @sshine
+- @tejasbubane
+- @tofische
+
+### Based on
+
+JavaRanch Cattle Drive, exercise 3 - http://www.javaranch.com/leap.jsp
\ No newline at end of file
diff --git a/haskell/leap/examples/error-nosig/package.yaml b/haskell/leap/examples/error-nosig/package.yaml
new file mode 100644
index 0000000..2c476e4
--- /dev/null
+++ b/haskell/leap/examples/error-nosig/package.yaml
@@ -0,0 +1,16 @@
+name: leap
+
+dependencies:
+  - base
+
+library:
+  exposed-modules: LeapYear
+  source-dirs: src
+
+tests:
+  test:
+    main: Tests.hs
+    source-dirs: test
+    dependencies:
+      - leap
+      - hspec
diff --git a/haskell/leap/examples/error-nosig/src/LeapYear.hs b/haskell/leap/examples/error-nosig/src/LeapYear.hs
new file mode 100644
index 0000000..b68e344
--- /dev/null
+++ b/haskell/leap/examples/error-nosig/src/LeapYear.hs
@@ -0,0 +1,4 @@
+module LeapYear (isLeapYear) where
+
+isLeapYear year = hasFactor 4 && (not (hasFactor 100) || hasFactor 400)
+  where hasFactor n = year `rem` n == 0
diff --git a/haskell/leap/examples/success-standard/package.yaml b/haskell/leap/examples/success-standard/package.yaml
new file mode 100644
index 0000000..2c476e4
--- /dev/null
+++ b/haskell/leap/examples/success-standard/package.yaml
@@ -0,0 +1,16 @@
+name: leap
+
+dependencies:
+  - base
+
+library:
+  exposed-modules: LeapYear
+  source-dirs: src
+
+tests:
+  test:
+    main: Tests.hs
+    source-dirs: test
+    dependencies:
+      - leap
+      - hspec
diff --git a/haskell/leap/leap.cabal b/haskell/leap/leap.cabal
new file mode 100644
index 0000000..fb19f87
--- /dev/null
+++ b/haskell/leap/leap.cabal
@@ -0,0 +1,34 @@
+cabal-version: 1.12
+
+-- This file has been generated from package.yaml by hpack version 0.34.2.
+--
+-- see: https://github.com/sol/hpack
+
+name:           leap
+version:        1.6.0.10
+build-type:     Simple
+
+library
+  exposed-modules:
+      LeapYear
+  other-modules:
+      Paths_leap
+  hs-source-dirs:
+      src
+  ghc-options: -Wall
+  build-depends:
+      base
+  default-language: Haskell2010
+
+test-suite test
+  type: exitcode-stdio-1.0
+  main-is: Tests.hs
+  other-modules:
+      Paths_leap
+  hs-source-dirs:
+      test
+  build-depends:
+      base
+    , hspec
+    , leap
+  default-language: Haskell2010
diff --git a/haskell/leap/package.yaml b/haskell/leap/package.yaml
new file mode 100644
index 0000000..5364801
--- /dev/null
+++ b/haskell/leap/package.yaml
@@ -0,0 +1,21 @@
+name: leap
+version: 1.6.0.10
+
+dependencies:
+  - base
+
+library:
+  exposed-modules: LeapYear
+  source-dirs: src
+  ghc-options: -Wall
+  # dependencies:
+  # - foo       # List here the packages you
+  # - bar       # want to use in your solution.
+
+tests:
+  test:
+    main: Tests.hs
+    source-dirs: test
+    dependencies:
+      - leap
+      - hspec
diff --git a/haskell/leap/src/LeapYear.hs b/haskell/leap/src/LeapYear.hs
new file mode 100644
index 0000000..1a4bae6
--- /dev/null
+++ b/haskell/leap/src/LeapYear.hs
@@ -0,0 +1,7 @@
+module LeapYear (isLeapYear) where
+
+isLeapYear :: Integer -> Bool
+isLeapYear year | rem year 4 /= 0 = False
+isLeapYear year | rem year 100 /= 0 = True
+isLeapYear year | rem year 400 == 0 = True
+isLeapYear _year = False
diff --git a/haskell/leap/stack.yaml b/haskell/leap/stack.yaml
new file mode 100644
index 0000000..35c2e5b
--- /dev/null
+++ b/haskell/leap/stack.yaml
@@ -0,0 +1 @@
+resolver: lts-16.21
diff --git a/haskell/leap/stack.yaml.lock b/haskell/leap/stack.yaml.lock
new file mode 100644
index 0000000..c646f0b
--- /dev/null
+++ b/haskell/leap/stack.yaml.lock
@@ -0,0 +1,12 @@
+# This file was autogenerated by Stack.
+# You should not edit this file by hand.
+# For more information, please see the documentation at:
+#   https://docs.haskellstack.org/en/stable/lock_files
+
+packages: []
+snapshots:
+- completed:
+    size: 532413
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/16/21.yaml
+    sha256: 7b5cac89352fa4a88606dc6cb250aee9291f21e2e988d464065f5aa51f5de33d
+  original: lts-16.21
diff --git a/haskell/leap/test/Tests.hs b/haskell/leap/test/Tests.hs
new file mode 100644
index 0000000..a000cb1
--- /dev/null
+++ b/haskell/leap/test/Tests.hs
@@ -0,0 +1,66 @@
+{-# OPTIONS_GHC -fno-warn-type-defaults #-}
+{-# LANGUAGE RecordWildCards #-}
+
+import Data.Foldable     (for_)
+import Test.Hspec        (Spec, describe, it, shouldBe)
+import Test.Hspec.Runner (configFastFail, defaultConfig, hspecWith)
+
+import LeapYear (isLeapYear)
+
+main :: IO ()
+main = hspecWith defaultConfig {configFastFail = True} specs
+
+specs :: Spec
+specs = describe "isLeapYear" $ for_ cases test
+  where
+
+    test Case{..} = it explanation assertion
+      where
+        explanation = unwords [show input, "-", description]
+        assertion   = isLeapYear (fromIntegral input) `shouldBe` expected
+
+data Case = Case { description :: String
+                 , input       :: Integer
+                 , expected    :: Bool
+                 }
+
+cases :: [Case]
+cases = [ Case { description = "year not divisible by 4 in common year"
+               , input       = 2015
+               , expected    = False
+               }
+        , Case { description = "year divisible by 2, not divisible by 4 in common year"
+               , input       = 1970
+               , expected    = False
+               }
+        , Case { description = "year divisible by 4, not divisible by 100 in leap year"
+               , input       = 1996
+               , expected    = True
+               }
+        , Case { description = "year divisible by 4 and 5 is still a leap year"
+               , input       = 1960
+               , expected    = True
+               }
+        , Case { description = "year divisible by 100, not divisible by 400 in common year"
+               , input       = 2100
+               , expected    = False
+               }
+        , Case { description = "year divisible by 100 but not by 3 is still not a leap year"
+               , input       = 1900
+               , expected    = False
+               }
+        , Case { description = "year divisible by 400 in leap year"
+               , input       = 2000
+               , expected    = True
+               }
+        , Case { description = "year divisible by 400 but not by 125 is still a leap year"
+               , input       = 2400
+               , expected    = True
+               }
+        , Case { description = "year divisible by 200, not divisible by 400 in common year"
+               , input       = 1800
+               , expected    = False
+               }
+        ]
+
+-- bd7f470e9ffe40993fc49558a02676ac22827441