From 1c60037da4c591072f591964d8faad41f34b52d4 Mon Sep 17 00:00:00 2001
From: John Soo <address@hidden>
Date: Sun, 7 Jul 2019 17:27:42 -0700
Subject: [PATCH 01/12] gnu: Add ghc-unsafe.

* gnu/packages/haskell.scm (ghc-unsafe): New variable.
---
 gnu/packages/haskell.scm | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/gnu/packages/haskell.scm b/gnu/packages/haskell.scm
index 8787f10789..fe762a2a9a 100644
--- a/gnu/packages/haskell.scm
+++ b/gnu/packages/haskell.scm
@@ -19,6 +19,7 @@
 ;;; Copyright © 2018, 2019 Gabriel Hondet <address@hidden>
 ;;; Copyright © 2019 Robert Vollmert <address@hidden>
 ;;; Copyright © 2019 Jacob MacDonald <address@hidden>
+;;; Copyright © 2019 John Soo <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -2781,6 +2782,40 @@ package.  This package re-exports the unix package when available.  When it
 isn't available, portable implementations are used.")
     (license license:bsd-3)))
 
+(define-public ghc-unsafe
+  (package
+    (name "ghc-unsafe")
+    (version "0.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://hackage.haskell.org/package/unsafe/unsafe-"
+         version ".tar.gz"))
+       (sha256
+        (base32
+         "0hc6xr1i3hkz25gdgfx1jqgpsc9mwa05bkfynp0mcfdlyz6782nz"))))
+    (build-system haskell-build-system)
+    (home-page "https://hackage.haskell.org/package/unsafe")
+    (synopsis "Unified interface to unsafe functions")
+    (description
+     "SafeHaskell introduced the notion of safe and unsafe modules.  In order to
+make as many as possible modules \\\"safe\\\", the well-known unsafe functions
+were moved to distinguished modules.  This makes it hard to write packages that
+work with both old and new versions of GHC.  This package provides a single
+module System.Unsafe that exports the unsafe functions from the base package.
+It provides them in a style ready for qualification, that is, you should import
+them by
+
+import qualified System.Unsafe as Unsafe
+
+The package also contains a script called rename-unsafe.sh.  It replaces all
+occurrences of the original identifiers with the qualified identifiers from this
+package.  You still have to adapt the import commands.  It uses the
+darcs-replace-rec script from the darcs-scripts package.")
+    (license license:bsd-3)))
+
 (define-public ghc-indents
   (package
     (name "ghc-indents")
-- 
2.22.0