From d437f2c365a12fb3894eb87f52decf53c745f475 Mon Sep 17 00:00:00 2001
From: John Ericson <John.Ericson@Obsidian.Systems>
Date: Thu, 24 May 2018 10:43:14 -0400
Subject: [PATCH] lib: Fix `nix-env -qaP -f . --xml --meta`

The function value cannot be serialized so nix-env was mad. Turns out we can
just remove it like we do in `lib/systems/inspect.nix`.
---
 lib/systems/for-meta.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/systems/for-meta.nix b/lib/systems/for-meta.nix
index 9e85cea3ad11..88cb0101410b 100644
--- a/lib/systems/for-meta.nix
+++ b/lib/systems/for-meta.nix
@@ -3,6 +3,8 @@ let
   inherit (lib.systems) parse;
   inherit (lib.systems.inspect) patterns;
 
+  abis = lib.mapAttrs (_: abi: builtins.removeAttrs abi [ "assertions" ]) parse.abis;
+
 in rec {
   all     = [ {} ]; # `{}` matches anything
   none    = [];
@@ -19,7 +21,7 @@ in rec {
   darwin  = [ patterns.isDarwin ];
   freebsd = [ patterns.isFreeBSD ];
   # Should be better, but MinGW is unclear, and HURD is bit-rotted.
-  gnu     = [ { kernel = parse.kernels.linux; abi = parse.abis.gnu; } ];
+  gnu     = [ { kernel = parse.kernels.linux; abi = abis.gnu; } ];
   illumos = [ patterns.isSunOS ];
   linux   = [ patterns.isLinux ];
   netbsd  = [ patterns.isNetBSD ];