From 05c12f147e932c990f4b026b9efe0b7a1985461e Mon Sep 17 00:00:00 2001
From: John Ericson <Ericson2314@Yahoo.com>
Date: Sat, 26 Nov 2016 15:13:43 -0800
Subject: top-level: Move default-choosing logic to top-level/platforms.nix

This mirrors stdenv/default.nix
---
 pkgs/top-level/default.nix | 24 +++++++-----------------
 1 file changed, 7 insertions(+), 17 deletions(-)

(limited to 'pkgs/top-level/default.nix')

diff --git a/pkgs/top-level/default.nix b/pkgs/top-level/default.nix
index 9464a8012b314..6b61110f1e73c 100644
--- a/pkgs/top-level/default.nix
+++ b/pkgs/top-level/default.nix
@@ -24,12 +24,11 @@
   config ? {}
 
 , crossSystem ? null
-, platform ? null
+, platform ? assert false; null
 } @ args:
 
 let # Rename the function arguments
   configExpr = config;
-  platform_ = platform;
 
 in let
   lib = import ../../lib;
@@ -42,21 +41,12 @@ in let
     then configExpr { inherit pkgs; }
     else configExpr;
 
-  # Allow setting the platform in the config file. Otherwise, let's use a reasonable default (pc)
-
-  platformAuto = let
-      platforms = (import ./platforms.nix);
-    in
-      if system == "armv6l-linux" then platforms.raspberrypi
-      else if system == "armv7l-linux" then platforms.armv7l-hf-multiplatform
-      else if system == "armv5tel-linux" then platforms.sheevaplug
-      else if system == "mips64el-linux" then platforms.fuloong2f_n32
-      else if system == "x86_64-linux" then platforms.pc64
-      else if system == "i686-linux" then platforms.pc32
-      else platforms.pcBase;
-
-  platform = if platform_ != null then platform_
-    else config.platform or platformAuto;
+  # Allow setting the platform in the config file. Otherwise, let's use a
+  # reasonable default.
+  platform =
+    args.platform
+    or (config.platform
+    or (import ./platforms.nix).selectPlatformBySystem system);
 
   # A few packages make a new package set to draw their dependencies from.
   # (Currently to get a cross tool chain, or forced-i686 package.) Rather than
-- 
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