diff --git a/ChangeLog.md b/ChangeLog.md
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--- /dev/null
+++ b/ChangeLog.md
@@ -0,0 +1,3 @@
+# 0.1.0.0
+
+  * first release
diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright Chris Dornan (c) 2019
+
+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 Chris Dornan 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/README.md b/README.md
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--- /dev/null
+++ b/README.md
@@ -0,0 +1,1 @@
+# possibly
diff --git a/Setup.hs b/Setup.hs
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--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/possibly.cabal b/possibly.cabal
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--- /dev/null
+++ b/possibly.cabal
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+cabal-version: 1.12
+
+-- This file has been generated from package.yaml by hpack version 0.31.1.
+--
+-- see: https://github.com/sol/hpack
+--
+-- hash: 81cf25ba1d1ad291f25157e1056bd539e3fcb065cbf48f1d3f5a03a99182c4b9
+
+name:           possibly
+version:        0.0.0.1
+synopsis:       type Possibly a = Either String a
+description:    A surprisingly useful type synonym for Either in which the Left diagnostic is a String, i.e, @type Possibly a = Either String a@
+category:       data
+homepage:       https://github.com/cdornan/possibly#readme
+bug-reports:    https://github.com/cdornan/possibly/issues
+author:         Chris Dornan
+maintainer:     chris@chrisdornan.com
+copyright:      2019 Chris Dornan
+license:        BSD3
+license-file:   LICENSE
+build-type:     Simple
+extra-source-files:
+    README.md
+    ChangeLog.md
+
+source-repository head
+  type: git
+  location: https://github.com/cdornan/possibly
+
+library
+  exposed-modules:
+      Data.Possibly
+  other-modules:
+      Paths_possibly
+  hs-source-dirs:
+      src
+  ghc-options: -Wall
+  build-depends:
+      base >=0.0.0.0 && <100
+  default-language: Haskell2010
diff --git a/src/Data/Possibly.hs b/src/Data/Possibly.hs
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--- /dev/null
+++ b/src/Data/Possibly.hs
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+module Data.Possibly where
+
+-- | For contexts where the @Left@ type is a 'String' diagnostic.
+type Possibly a = Either String a