From 221cae2ba0c487c7b7df1219be5aaaf3888c0d82 Mon Sep 17 00:00:00 2001
From: Jared Ramirez <jaredramirez@hey.com>
Date: Fri, 25 Sep 2020 16:08:59 -0700
Subject: [PATCH] Add lld to Nix for faster builds; Remove redundant import

---
 compiler/builtins/bitcode/src/lib.rs | 2 --
 shell.nix                            | 2 ++
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/compiler/builtins/bitcode/src/lib.rs b/compiler/builtins/bitcode/src/lib.rs
index ab48b7bb67e..3bcf34121ed 100644
--- a/compiler/builtins/bitcode/src/lib.rs
+++ b/compiler/builtins/bitcode/src/lib.rs
@@ -3,8 +3,6 @@
 #![crate_type = "lib"]
 #![no_std]
 
-use libm;
-
 /// TODO replace this with a normal Inkwell build_cast call - this was just
 /// used as a proof of concept for getting bitcode importing working!
 #[no_mangle]
diff --git a/shell.nix b/shell.nix
index 0e7fd261884..cd14b279f15 100644
--- a/shell.nix
+++ b/shell.nix
@@ -35,6 +35,8 @@ let
       pkgs.libffi
       pkgs.libxml2
       pkgs.zlib
+      # faster builds - see /~https://github.com/rtfeldman/roc/blob/trunk/BUILDING_FROM_SOURCE.md#use-lld-for-the-linker
+      pkgs.lld_9
     ];
 in pkgs.mkShell {
   buildInputs = inputs ++ darwin-frameworks;