diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright Michel Boucey (c) 2016
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Michel Boucey nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/Setup.hs b/Setup.hs
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+++ b/Setup.hs
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+import Distribution.Simple
+main = defaultMain
diff --git a/Spintax.cabal b/Spintax.cabal
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--- /dev/null
+++ b/Spintax.cabal
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+name:                Spintax
+version:             0.1.0.0
+synopsis:            Random text generation based on spintax
+description:         Random text generation based on spintax with nested alternatives and empty options.
+homepage:            https://github.com/MichelBoucey/spintax
+license:             BSD3
+license-file:        LICENSE
+author:              Michel Boucey
+maintainer:          michel.boucey@gmail.com
+copyright:           Copyright © 2016 - Michel Boucey
+category:            Text
+build-type:          Simple
+cabal-version:       >=1.10
+
+library
+  hs-source-dirs:      src
+  exposed-modules:     Text.Spintax
+  build-depends:       base >= 4.7 && < 5
+                     , text
+                     , attoparsec
+                     , mwc-random
+                     , extra
+  default-language:    Haskell2010
+
+source-repository head
+  type:     git
+  location: https://github.com/MichelBoucey/spintax
diff --git a/src/Text/Spintax.hs b/src/Text/Spintax.hs
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--- /dev/null
+++ b/src/Text/Spintax.hs
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+{-# LANGUAGE OverloadedStrings #-}
+
+module Text.Spintax where
+
+import Control.Applicative ((<|>))
+import Data.Attoparsec.Text
+import Data.Either
+import Data.List.Extra as E
+import Data.Text as T
+import System.Random.MWC
+
+-- | Generate random texts based on a spinning syntax template, with nested alternatives and empty options.
+--
+-- >λ> spintax "{A|B|C|{a|b|c{1|2|3}|d}|D}{|, {..|etc}.}"
+-- > Right "c2"
+--
+spintax :: T.Text -> IO (Either T.Text T.Text)
+spintax template =
+    createSystemRandom >>= \gen -> runParse gen template
+  where
+    runParse gen input =
+        getText gen "" [] input 0
+      where
+        getText gen output alters input nestlev 
+            | nestlev < 0  = return failure
+            | nestlev == 0 =
+                case parse spinSyntax input of
+                    Done rest match ->
+                        case match of
+                            "{" -> getText gen output alters rest (nestlev+1)
+                            "}" -> return failure
+                            "|" -> return failure
+                            _   -> getText gen (output `append` match) alters rest nestlev
+                    Partial _ -> return $ Right $ output `append` input
+                    Fail {} -> return failure
+            | nestlev == 1 =
+                case parse spinSyntax input of
+                    Done rest match ->
+                        case match of
+                            "{" -> getText gen output (addToLast alters match) rest (nestlev+1)
+                            "}" -> do result <- runParse gen =<< randAlter gen alters
+                                      case result of
+                                          Left _ -> return failure
+                                          Right text -> getText gen (output `append` text) [] rest (nestlev-1)
+                            "|" -> if E.null alters
+                                    then getText gen output ["",""] rest nestlev
+                                    else getText gen output (E.snoc alters "") rest nestlev
+                            _   -> getText gen output (addToLast alters match) rest nestlev
+                    Partial _ -> return failure
+                    Fail {} -> return failure 
+            | nestlev > 1 =
+                case parse spinSyntax input of
+                    Done rest match ->
+                        case match of
+                            "{" -> getText gen output (addToLast alters match) rest (nestlev+1)
+                            "}" -> getText gen output (addToLast alters match) rest (nestlev-1)
+                            _   -> getText gen output (addToLast alters match) rest nestlev
+                    Partial _ -> return failure
+                    Fail {} -> return failure
+          where
+            failure = Left "Spintax template parsing failure"
+            addToLast l t =
+                case E.unsnoc l of
+                    Just (xs,x) -> E.snoc xs $ x `append` t
+                    Nothing     -> [t]
+            randAlter g as = uniformR (1,E.length as) g >>= \r -> return $ (!!) as (r-1)
+            spinSyntax =
+                openBrace <|> closeBrace <|> pipe <|> content
+              where
+                pipe = string "|"
+                openBrace = string "{"
+                closeBrace = string "}"
+                content =
+                    takeWhile1 ctt
+                  where
+                    ctt '{' = False
+                    ctt '}' = False
+                    ctt '|' = False
+                    ctt _   = True
+