From 23f67915d12aaf0759b022a4c47b730b4687b7d2 Mon Sep 17 00:00:00 2001
From: Francesco Gazzetta <fgaz@fgaz.me>
Date: Sat, 23 Mar 2019 19:05:38 +0100
Subject: [PATCH] Only build free packages

---
 buildable.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/buildable.nix b/buildable.nix
index 35778c2..21af140 100644
--- a/buildable.nix
+++ b/buildable.nix
@@ -17,10 +17,12 @@ let
     );
   isReserved = n: builtins.elem n ["lib" "overlays" "modules"];
   isBroken = p: ({ meta.broken = false; } // p).meta.broken;
+  isFree = p: ({ meta.license.free = true; } // p).meta.license.free;
 in filterSet
      (n: !(isReserved n)) # filter out non-packages
      (p: (builtins.isAttrs p)
        && !(isBroken p)
+       && isFree p
      )
      (import ./default.nix { inherit pkgs; })