From f5618834f31b00d8c6465537d7ff7cf69860b2bc Mon Sep 17 00:00:00 2001
From: Justin Bedo <cu@cua0.org>
Date: Thu, 13 Oct 2022 16:45:01 +1100
Subject: ex2: fix on darwin

---
 day2/ex3-R/flake.nix | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/day2/ex3-R/flake.nix b/day2/ex3-R/flake.nix
index f7b7c62..cd55877 100755
--- a/day2/ex3-R/flake.nix
+++ b/day2/ex3-R/flake.nix
@@ -12,7 +12,15 @@
     flake-utils,
   }:
     flake-utils.lib.eachDefaultSystem (system: let
-      pkgs = import nixpkgs {inherit system;};
+      pkgs = import nixpkgs {
+        inherit system;
+        config.rPackageOverrides = self:
+          with self; {
+            edgeR = (import nixpkgs {inherit system;}).rPackages.edgeR.overrideAttrs (attrs: {
+              buildInputs = attrs.buildInputs ++ lib.optional stdenv.isDarwin libiconv;
+            });
+          };
+      };
       bionix' = import bionix {nixpkgs = pkgs;};
     in {
       defaultPackage = bionix'.callBionix ./. {};
-- 
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