fpylll: fix on Darwin

fplll and fpylll both assume support for 128-bit floating point
numbers (long double), which aarch64-darwin does not have.

pkgs/development/libraries/fplll/0001-disable-long-double-on-aarch64-darwin.patch

@@ -0,0 +1,25 @@
+From f83e93b63c8959dc4d944d521fe16ba502dc3ed6 Mon Sep 17 00:00:00 2001
+From: George Huebner <huebnerg3@gmail.com>
+Date: Sun, 29 Oct 2023 19:00:03 -0500
+Subject: [PATCH] disable long doubles on aarch64-darwin
+
+---
+ fplll/defs.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/fplll/defs.h b/fplll/defs.h
+index bfc4158d..0e85dc0f 100644
+--- a/fplll/defs.h
++++ b/fplll/defs.h
+@@ -19,7 +19,7 @@
+ #ifndef FPLLL_DEFS_H
+ #define FPLLL_DEFS_H
+
+-#ifndef __CYGWIN__
++#if !defined(__CYGWIN__) && !(defined(__APPLE__) && defined(__aarch64__))
+ #define FPLLL_WITH_LONG_DOUBLE
+ #endif
+
+-- 
+2.42.0
+

pkgs/development/libraries/fplll/default.nix

@@ -18,6 +18,10 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-taSS7jpVyjVfNe6kSuUDXMD2PgKmtG64V5MjZyQzorI=";
   };
 
+  patches = [
+    ./0001-disable-long-double-on-aarch64-darwin.patch
+  ];
+
   nativeBuildInputs = [
     pkg-config
     gettext

pkgs/development/python-modules/fpylll/0001-disable-long-double-on-aarch64-darwin.patch

@@ -0,0 +1,35 @@
+From 93f491930a219c95ddb6203bc2e7ab1a095217ab Mon Sep 17 00:00:00 2001
+From: George Huebner <huebnerg3@gmail.com>
+Date: Fri, 27 Oct 2023 13:50:57 -0500
+Subject: [PATCH] disable long double on aarch64-darwin
+
+Apple Silicon does not have support for long doubles, so they need to
+be disabled.
+---
+ setup.py | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/setup.py b/setup.py
+index 274836f..27941c4 100755
+--- a/setup.py
++++ b/setup.py
+@@ -2,6 +2,7 @@
+ # -*- coding: utf-8 -*-
+
+ import os
++import platform
+ import subprocess
+ import sys
+ import io
+@@ -195,7 +196,7 @@ class build_ext(_build_ext, object):
+         # Ideally this would check the fplll headers explicitly for the
+         # the FPLLL_WITH_LONG_DOUBLE define, but for now it suffices to
+         # say that long double support is disabled on Cygwin
+-        return not sys.platform.startswith("cygwin")
++        return not ((sys.platform.startswith("cygwin") or ("macOS" in (_ := platform.platform()) and "arm" in _)))
+
+
+ # EXTENSIONS
+-- 
+2.42.0
+