From a5d41a30e5f0b36dcf204cc461a413d8cfb9366b Mon Sep 17 00:00:00 2001
From: Andrew Dunham <andrew@du.nham.ca>
Date: Sun, 6 Jan 2019 00:53:21 -0500
Subject: [PATCH] gitAndTools.git-annex: wrap binary on not-Linux to use
 Nixpkgs' coreutils

---
 .../haskell-modules/configuration-nix.nix           | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
index f0d629ad5e44..d7292c66fb85 100644
--- a/pkgs/development/haskell-modules/configuration-nix.nix
+++ b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -544,6 +544,19 @@ self: super: builtins.intersectAttrs super {
       '';
     });
 
+  # On Darwin, git-annex mis-detects options to `cp`, so we wrap the binary to
+  # ensure it uses Nixpkgs' coreutils.
+  git-annex = with pkgs;
+    if (!stdenv.isLinux) then
+      let path = stdenv.lib.makeBinPath [ coreutils ];
+      in overrideCabal (addBuildTool super.git-annex makeWrapper) (_drv: {
+        postFixup = ''
+          wrapProgram $out/bin/git-annex \
+            --prefix PATH : "${path}"
+        '';
+      })
+    else super.git-annex;
+
   # The test suite has undeclared dependencies on git.
   githash = dontCheck super.githash;