treewide: use llvm6 in some places

Not everything works on llvm7. It’s easiest to just provide the llvm6
as backup in this case.

1 files changed, 5 insertions, 0 deletions

diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index 7590a37a8e36..ca1a38c4ab48 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -3,6 +3,7 @@
 , stateDir ? "/nix/var"
 , confDir ? "/etc"
 , boehmgc
+, llvmPackages_6
 }:
 
 let
@@ -174,6 +175,8 @@ in rec {
     };
 
     inherit storeDir stateDir confDir boehmgc;
+
+    stdenv = llvmPackages_6.stdenv;
   };
 
   nixUnstable = lib.lowPrio (callPackage common rec {
@@ -188,6 +191,8 @@ in rec {
     fromGit = true;
 
     inherit storeDir stateDir confDir boehmgc;
+
+    stdenv = llvmPackages_6.stdenv;
   });
 
 }