From 33cfee81777341cd335ccbe237db329b3fc7c444 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Sat, 15 Apr 2017 11:14:55 +0200
Subject: [PATCH] buildRustPackage: add cargoBuildFlags

---
 pkgs/build-support/rust/default.nix | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/pkgs/build-support/rust/default.nix b/pkgs/build-support/rust/default.nix
index 91569d0c070a..1287d401e4a2 100644
--- a/pkgs/build-support/rust/default.nix
+++ b/pkgs/build-support/rust/default.nix
@@ -7,6 +7,7 @@
 , buildInputs ? []
 , cargoUpdateHook ? ""
 , cargoDepsHook ? ""
+, cargoBuildFlags ? []
 , ... } @ args:
 
 let
@@ -92,9 +93,9 @@ in stdenv.mkDerivation (args // {
     )
   '' + (args.prePatch or "");
 
-  buildPhase = args.buildPhase or ''
-    echo "Running cargo build --release"
-    cargo build --release
+  buildPhase = with builtins; args.buildPhase or ''
+    echo "Running cargo build --release ${concatStringsSep " " cargoBuildFlags}"
+    cargo build --release ${concatStringsSep " " cargoBuildFlags}
   '';
 
   checkPhase = args.checkPhase or ''