diff --git a/CHANGELOG.md b/CHANGELOG.md
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--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,5 @@
+# Revision history for based
+
+## 0.1 -- 2022-06-20
+
+* First version. Released on an unsuspecting world.
diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
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+Copyright (c) 2022 chessai
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/based.cabal b/based.cabal
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+++ b/based.cabal
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+cabal-version: 3.0
+name:
+  based
+version:
+  0.1
+synopsis:
+  alternative prelude
+-- description:
+homepage:
+  https://github.com/chessai/based
+bug-reports:
+  https://github.com/chessai/based#issues
+license:
+  MIT
+license-file:
+  LICENSE
+author:
+  chessai
+maintainer:
+  chessai1996@gmail.com
+-- A copyright notice.
+copyright:
+  Copyrigt © chessai 2022
+category:
+  Prelude
+extra-source-files:
+  CHANGELOG.md
+
+library
+  exposed-modules:
+    Based
+  -- other-modules:
+  -- other-extensions:
+  build-depends:
+    , base >= 4.11 && < 4.17
+  hs-source-dirs:
+    src
+  default-language:
+    Haskell2010
diff --git a/src/Based.hs b/src/Based.hs
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--- /dev/null
+++ b/src/Based.hs
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+{-# language
+    MagicHash
+  , PackageImports
+#-}
+
+module Based
+  (
+  ) where
+
+import "base" GHC.Exts (TYPE, unsafeCoerce#)
+
+coerce :: TYPE r1 -> TYPE r2
+coerce = unsafeCoerce#