From 5ad79dc4bb22326e5a98db7bf2b69a76a2e6f01e Mon Sep 17 00:00:00 2001
From: volth <volth@volth.com>
Date: Sun, 21 Apr 2019 17:06:50 +0000
Subject: compilation for particular x86_64 architecture

---
 nixos/modules/services/misc/nix-daemon.nix | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'nixos/modules')

diff --git a/nixos/modules/services/misc/nix-daemon.nix b/nixos/modules/services/misc/nix-daemon.nix
index 665215822af8..62421a648e16 100644
--- a/nixos/modules/services/misc/nix-daemon.nix
+++ b/nixos/modules/services/misc/nix-daemon.nix
@@ -60,6 +60,7 @@ let
         ${optionalString (isNix20 && !cfg.distributedBuilds) ''
           builders =
         ''}
+        system-features = ${toString cfg.systemFeatures}
         $extraOptions
         END
       '' + optionalString cfg.checkConfig (
@@ -360,6 +361,15 @@ in
         '';
       };
 
+      systemFeatures = mkOption {
+        type = types.listOf types.str;
+        default = [ ];
+        example = [ "kvm" "big-parallel" "gccarch-skylake" ];
+        description = ''
+          The supported features of a machine
+        '';
+      };
+
       checkConfig = mkOption {
         type = types.bool;
         default = true;
@@ -478,6 +488,21 @@ in
           /nix/var/nix/gcroots/tmp
       '';
 
+    nix.systemFeatures = mkIf (pkgs.stdenv.isx86_64 && pkgs.hostPlatform.platform ? gcc.arch) (
+       # can build for arch
+      mkDefault (
+        [ "nixos-test" "benchmark" "big-parallel" "kvm" "gccarch-${pkgs.hostPlatform.platform.gcc.arch}" ] ++
+        { # can also run code for the following achritectures:
+          "sandybridge"    = [ "gccarch-westmere" ];
+          "ivybridge"      = [ "gccarch-westmere" "gccarch-sandybridge" ];
+          "haswell"        = [ "gccarch-westmere" "gccarch-sandybridge" "gccarch-ivybridge" ];
+          "broadwell"      = [ "gccarch-westmere" "gccarch-sandybridge" "gccarch-ivybridge" "gccarch-haswell" ];
+          "skylake"        = [ "gccarch-westmere" "gccarch-sandybridge" "gccarch-ivybridge" "gccarch-haswell" "gccarch-broadwell" ];
+          "skylake-avx512" = [ "gccarch-westmere" "gccarch-sandybridge" "gccarch-ivybridge" "gccarch-haswell" "gccarch-broadwell" "gccarch-skylake" ];
+        }.${pkgs.hostPlatform.platform.gcc.arch}
+      )
+    );
+
   };
 
 }
-- 
cgit 1.4.1