nixpkgs/pkgs/development/perl-modules/lwp-protocol-https-cert-file.patch

diff -ru -x '*~' LWP-Protocol-https-6.04-orig/lib/LWP/Protocol/https.pm LWP-Protocol-https-6.04/lib/LWP/Protocol/https.pm
--- LWP-Protocol-https-6.04-orig/lib/LWP/Protocol/https.pm	2013-04-29 23:16:18.000000000 +0200
+++ LWP-Protocol-https-6.04/lib/LWP/Protocol/https.pm	2016-03-02 14:59:01.639844511 +0100
@@ -24,6 +24,11 @@
     }
     if ($ssl_opts{SSL_verify_mode}) {
 	unless (exists $ssl_opts{SSL_ca_file} || exists $ssl_opts{SSL_ca_path}) {
+	    $ssl_opts{SSL_ca_file} = $ENV{'SSL_CERT_FILE'};
+	    $ssl_opts{SSL_ca_file} = "/etc/ssl/certs/ca-certificates.crt"
+		if !defined $ssl_opts{SSL_ca_file} && -e "/etc/ssl/certs/ca-certificates.crt";
+	}
+	unless (exists $ssl_opts{SSL_ca_file} || exists $ssl_opts{SSL_ca_path}) {
 	    eval {
 		require Mozilla::CA;
 	    };