perlPackages.CryptDES: fix build with gcc14

See the discussion at https://rt.cpan.org/Public/Bug/Display.html?id=133363.

The patch has to be copied to nixpkgs manually, because automatic
download with fetchpatch results in empty file (perhaps some form of
DDoS protection).

pkgs/development/perl-modules/CryptDES-expose-perl_des_expand_key-and-perl_des_crypt.patch

···
+From 51fda02d223f516c4948606c050bfc732b95f481 Mon Sep 17 00:00:00 2001
+From: Brian Fraser <[e-mail]>
+Date: Thu, 24 Sep 2020 15:00:20 +0200
+Subject: [PATCH] _des.h: expose perl_des_expand_key() and perl_des_crypt() to
+ prevent implicit delaration errors/warnings
+
+---
+ _des.h | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/_des.h b/_des.h
+index ec56b27..b636cda 100644
+--- a/_des.h
++++ b/_des.h
+@@ -4,4 +4,6 @@ typedef unsigned long des_ks[32];
+ 
+ void _des_crypt( des_cblock in, des_cblock out, des_ks key, int encrypt );
+ void _des_expand_key( des_user_key userKey, des_ks key );
++void perl_des_expand_key(des_user_key userKey, des_ks ks);
++void perl_des_crypt( des_cblock input, des_cblock output, des_ks ks, int encrypt );
+ 
+-- 
+2.24.3 (Apple Git-128)
+

pkgs/top-level/perl-packages.nix

···
       url = "mirror://cpan/authors/id/D/DP/DPARIS/Crypt-DES-2.07.tar.gz";
       hash = "sha256-LbHrtYN7TLIAUcDuW3M7RFPjE33wqSMGA0yGdiHt1+c=";
     };
+    patches = [
+      # Fix build error with gcc14. See https://rt.cpan.org/Public/Bug/Display.html?id=133363.
+      # Source: https://rt.cpan.org/Public/Ticket/Attachment/1912753/1024508/0001-_des.h-expose-perl_des_expand_key-and-perl_des_crypt.patch
+      ../development/perl-modules/CryptDES-expose-perl_des_expand_key-and-perl_des_crypt.patch
+    ];
     meta = {
       description = "Perl DES encryption module";
       license = with lib.licenses; [ bsdOriginalShortened ];