From 6955f4e4e63e86090a8905096129154995a210c9 Mon Sep 17 00:00:00 2001
From: sternenseemann <0rpkxez4ksa01gb3typccl0i@systemli.org>
Date: Sun, 27 Jun 2021 01:13:30 +0200
Subject: [PATCH] haskell-generic-builder: support badPlatforms

meta.badPlatforms allows us to exclude specific platforms from the list
of supported platforms without the need to explicitly substract it from
lib.platforms.all (or our inferior equivalent allKnownPlatforms) in
platforms. Thus it'll map nicely to unsupported-platforms in the
hackage2nix configuration in the future.
---
 pkgs/development/haskell-modules/generic-builder.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/haskell-modules/generic-builder.nix b/pkgs/development/haskell-modules/generic-builder.nix
index bc0d09589022..5bf9f460acf8 100644
--- a/pkgs/development/haskell-modules/generic-builder.nix
+++ b/pkgs/development/haskell-modules/generic-builder.nix
@@ -44,6 +44,7 @@ in
 , libraryFrameworkDepends ? [], executableFrameworkDepends ? []
 , homepage ? "https://hackage.haskell.org/package/${pname}"
 , platforms ? with lib.platforms; all # GHC can cross-compile
+, badPlatforms ? lib.platforms.none
 , hydraPlatforms ? null
 , hyperlinkSource ? true
 , isExecutable ? false, isLibrary ? !isExecutable
@@ -663,6 +664,7 @@ stdenv.mkDerivation ({
          // optionalAttrs (args ? description)    { inherit description; }
          // optionalAttrs (args ? maintainers)    { inherit maintainers; }
          // optionalAttrs (args ? hydraPlatforms) { inherit hydraPlatforms; }
+         // optionalAttrs (args ? badPlatforms)   { inherit badPlatforms; }
          // optionalAttrs (args ? changelog)      { inherit changelog; }
          ;