secp256k1

commit 8c96d4b20db360bc9820bc80296206ba390aa6ee
parent 6ec173e105b5fae871fb8a8557cc4b4330f32542
Author: Jared Tobin <jared@jtobin.io>
Date:   Sun, 28 Dec 2025 12:07:49 -0330

lib: use CPP to enforce 64-bit constraint

I'd previously used a conditional in the cabal file, but this doesn't play
so well with cabal2nix.

Diffstat:
M
lib/Crypto/Curve/Secp256k1.hs
 | 
6
++++++
M
ppad-secp256k1.cabal
 | 
2
--

2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/lib/Crypto/Curve/Secp256k1.hs b/lib/Crypto/Curve/Secp256k1.hs
@@ -1,5 +1,6 @@
 {-# OPTIONS_HADDOCK prune #-}
 {-# LANGUAGE BangPatterns #-}
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE DeriveGeneric #-}
 {-# LANGUAGE DerivingStrategies #-}
 {-# LANGUAGE LambdaCase #-}
@@ -10,6 +11,11 @@
 {-# LANGUAGE UnboxedTuples #-}
 {-# LANGUAGE ViewPatterns #-}
 
+#include "MachDeps.h"
+#if WORD_SIZE_IN_BITS != 64
+#error "ppad-secp256k1 requires a 64-bit architecture"
+#endif
+
 -- |
 -- Module: Crypto.Curve.Secp256k1
 -- Copyright: (c) 2024 Jared Tobin
diff --git a/ppad-secp256k1.cabal b/ppad-secp256k1.cabal
@@ -26,8 +26,6 @@ source-repository head
 
 library
   default-language: Haskell2010
-  if !(arch(x86_64) || arch(aarch64))
-    buildable: False
   hs-source-dirs:   lib
   ghc-options:
       -Wall