diff --git a/src/Vervis/Patch.hs b/src/Vervis/Patch.hs
new file mode 100644
index 0000000..71ca966
--- /dev/null
+++ b/src/Vervis/Patch.hs
@@ -0,0 +1,63 @@
+{- This file is part of Vervis.
+ -
+ - Written in 2018 by fr33domlover <fr33domlover@riseup.net>.
+ -
+ - ♡ Copying is an act of love. Please copy, reuse and share.
+ -
+ - The author(s) have dedicated all copyright and related and neighboring
+ - rights to this software to the public domain worldwide. This software is
+ - distributed without any warranty.
+ -
+ - You should have received a copy of the CC0 Public Domain Dedication along
+ - with this software. If not, see
+ - <http://creativecommons.org/publicdomain/zero/1.0/>.
+ -}
+
+-- | Representation of commit in a repo for viewing.
+--
+-- Each version control system has its own specific details of how repository
+-- changes are represented and encoded and stored internally. This module is
+-- merely a model for displaying a commit to a human viewer.
+module Vervis.Patch
+    ( Hunk (..)
+    , Edit (..)
+    , Patch (..)
+    )
+where
+
+import Prelude
+
+import Data.Int (Int64)
+import Data.Text (Text)
+import Data.Time.Clock (UTCTime)
+import Data.Word (Word32)
+import Text.Email.Validate (EmailAddress)
+
+data Hunk = Hunk
+    { hunkContextBefore :: [Text]
+    , hunkLineNumber    :: Int
+    , hunkOldLines      :: [Text]
+    , hunkNewLines      :: [Text]
+    , hunkContextAfter  :: [Text]
+    }
+
+data Edit
+    = AddTextFile FilePath Word32 [Text]
+    | AddBinaryFile FilePath Word32 Int64
+    | RemoveTextFile FilePath Word32 [Text]
+    | RemoveBinaryFile FilePath Word32 Int64
+    | MoveFile FilePath Word32 FilePath Word32
+    | ChmodFile FilePath Word32 Word32
+    | EditTextFile FilePath [Hunk] Word32 Word32
+    | EditBinaryFile FilePath Int64 Word32 Int64 Word32
+    | TextToBinary FilePath [Text] Word32 Int64 Word32
+    | BinaryToText FilePath Int64 Word32 [Text] Word32
+
+data Patch = Patch
+    { patchAuthorName  :: Text
+    , patchAuthorEmail :: EmailAddress
+    , patchTime        :: UTCTime
+    , patchTitle       :: Text
+    , patchDescription :: Text
+    , patchDiff        :: [Edit]
+    }
diff --git a/templates/repo/patch.hamlet b/templates/repo/patch.hamlet
new file mode 100644
index 0000000..1491262
--- /dev/null
+++ b/templates/repo/patch.hamlet
@@ -0,0 +1,45 @@
+$# This file is part of Vervis.
+$#
+$# Written in 2018 by fr33domlover <fr33domlover@riseup.net>.
+$#
+$# ♡ Copying is an act of love. Please copy, reuse and share.
+$#
+$# The author(s) have dedicated all copyright and related and neighboring
+$# rights to this software to the public domain worldwide. This software is
+$# distributed without any warranty.
+$#
+$# You should have received a copy of the CC0 Public Domain Dedication along
+$# with this software. If not, see
+$# <http://creativecommons.org/publicdomain/zero/1.0/>.
+
+<table>
+  <tr>
+    <td>By
+    <td>
+      $maybe sharer <- msharer
+        ^{personLinkW sharer}
+      $nothing
+        #{patchAuthorName patch}
+  <tr>
+    <td>At
+    <td>#{showDate $ patchTime patch}
+  <tr>
+    <td>Title
+    <td>{#patchTitle patch}
+  <tr>
+    <td>Description
+    <td>
+      <p>#{patchDescription patch}
+
+$if null parents
+  <p>TODO display patch diff here
+$else
+  <p>
+    This commit has multiple parents, and to be honest, I'm unsure how exactly
+    to decide against which one to run the diff. Do I just pick the first
+    parent? Or otherwise somehow detect which one is the right one? Advice is
+    very welcome. For now, to help me find and observe such cases, I'm just
+    listing here the parents of the commit:
+  <ol>
+    $forall parent <- parents
+      <li>#{parent}