From c72c6a48ca2c3090ea94df4474695524b5e68f9c Mon Sep 17 00:00:00 2001
From: Matthew Bauer <mjbauer95@gmail.com>
Date: Mon, 22 Apr 2019 21:16:59 -0400
Subject: [PATCH] treewide: use llvm6 in some places
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Not everything works on llvm7. It’s easiest to just provide the llvm6
as backup in this case.
---
 pkgs/desktops/gnustep/default.nix             |  6 ++--
 pkgs/tools/package-management/nix/default.nix |  5 ++++
 pkgs/top-level/all-packages.nix               | 29 ++++++++++++++-----
 3 files changed, 31 insertions(+), 9 deletions(-)

diff --git a/pkgs/desktops/gnustep/default.nix b/pkgs/desktops/gnustep/default.nix
index ac324bc89a85..1fdf79ef9aed 100644
--- a/pkgs/desktops/gnustep/default.nix
+++ b/pkgs/desktops/gnustep/default.nix
@@ -1,4 +1,4 @@
-{ pkgs, newScope }:
+{ pkgs, newScope, stdenv, llvmPackages_6 }:
 
 let
   callPackage = newScope self;
@@ -10,7 +10,9 @@ let
     gorm = callPackage ./gorm {};
     projectcenter = callPackage ./projectcenter {};
     system_preferences = callPackage ./systempreferences {};
-    libobjc = callPackage ./libobjc2 {};
+    libobjc = callPackage ./libobjc2 {
+      stdenv = if stdenv.cc.isClang then llvmPackages_6.stdenv else stdenv;
+    };
     make = callPackage ./make {};
     back = callPackage ./back {};
     base = callPackage ./base { giflib = pkgs.giflib_4_1; };
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;
   });
 
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 03e386619e55..3e253e838821 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3375,7 +3375,9 @@ in
     hdf4 = null;
   };
 
-  haproxy = callPackage ../tools/networking/haproxy { };
+  haproxy = callPackage ../tools/networking/haproxy {
+    stdenv = if stdenv.cc.isClang then llvmPackages_6.stdenv else stdenv;
+  };
 
   haveged = callPackage ../tools/security/haveged { };
 
@@ -6925,7 +6927,10 @@ in
 
   cryptol = haskell.lib.justStaticExecutables haskellPackages.cryptol;
 
-  inherit (callPackages ../development/compilers/crystal {})
+  inherit (callPackages ../development/compilers/crystal {
+    stdenv = if stdenv.cc.isClang then llvmPackages_6.stdenv else stdenv;
+    inherit (llvmPackages_6) clang llvm;
+  })
     crystal_0_25
     crystal_0_26
     crystal;
@@ -8100,7 +8105,9 @@ in
 
   lush2 = callPackage ../development/interpreters/lush {};
 
-  maude = callPackage ../development/interpreters/maude { };
+  maude = callPackage ../development/interpreters/maude {
+    stdenv = if stdenv.cc.isClang then llvmPackages_5.stdenv else stdenv;
+  };
 
   me_cleaner = pythonPackages.callPackage ../tools/misc/me_cleaner { };
 
@@ -8179,11 +8186,13 @@ in
     php = php72-unit;
   });
 
-   php73Packages-unit = recurseIntoAttrs (callPackage ./php-packages.nix {
+  php73Packages-unit = recurseIntoAttrs (callPackage ./php-packages.nix {
     php = php73-unit;
   });
 
-  inherit (callPackages ../development/interpreters/php { })
+  inherit (callPackages ../development/interpreters/php {
+    stdenv = if stdenv.cc.isClang then llvmPackages_6.stdenv else stdenv;
+  })
     php71
     php72
     php73;
@@ -9800,9 +9809,13 @@ in
 
   cln = callPackage ../development/libraries/cln { };
 
-  clucene_core_2 = callPackage ../development/libraries/clucene-core/2.x.nix { };
+  clucene_core_2 = callPackage ../development/libraries/clucene-core/2.x.nix {
+    stdenv = if stdenv.cc.isClang then llvmPackages_6.stdenv else stdenv;
+  };
 
-  clucene_core_1 = callPackage ../development/libraries/clucene-core { };
+  clucene_core_1 = callPackage ../development/libraries/clucene-core {
+    stdenv = if stdenv.cc.isClang then llvmPackages_6.stdenv else stdenv;
+  };
 
   clucene_core = clucene_core_1;
 
@@ -22543,11 +22556,13 @@ in
   root = callPackage ../applications/science/misc/root {
     inherit (darwin) cf-private;
     inherit (darwin.apple_sdk.frameworks) Cocoa OpenGL;
+    stdenv = if stdenv.cc.isClang then llvmPackages_5.stdenv else stdenv;
   };
 
   root5 = lowPrio (callPackage ../applications/science/misc/root/5.nix {
     inherit (darwin) cf-private;
     inherit (darwin.apple_sdk.frameworks) Cocoa OpenGL;
+    stdenv = if stdenv.cc.isClang then llvmPackages_5.stdenv else stdenv;
   });
 
   rink = callPackage ../applications/science/misc/rink { };