From 18683f727ca99b94eb516002f6be803a7fe82e8e Mon Sep 17 00:00:00 2001
From: Ed J <mohawk2@users.noreply.github.com>
Date: Tue, 24 Sep 2024 17:31:21 +0000
Subject: [PATCH] minimum version of P:G:G if installed to avoid gnuplot 6
 breakage

---
 Makefile.PL | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Makefile.PL b/Makefile.PL
index a809968..2564641 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -26,6 +26,15 @@ FOO
 my %prereq = ( 'PDL'         => '2.089', # contour_polylines
 	       'File::Temp'  => 0,
 	       'Time::HiRes' => 0);
+my %min_version = (
+  'PDL::Graphics::Gnuplot' => '2.029', # Gnuplot 6 warnings fixes
+);
+for my $opt_dep (sort keys %min_version) {
+  (my $file = $opt_dep) =~ s#::#/#g;
+  next if !eval { require "$file.pm"; 1 }; # not installed, fine
+  next if eval { $opt_dep->VERSION($min_version{$opt_dep}); 1 };
+  $prereq{$opt_dep} = $min_version{$opt_dep};
+}
 
 WriteMakefile(
     NAME                => 'PDL::Graphics::Simple',