drop support for perl 5.10

.github/workflows/linux.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: 'ubuntu-latest'
     strategy:
       matrix:
-        perl: [ '5.36', '5.30', '5.26', '5.22', '5.16', '5.10' ]
+        perl: [ '5.36', '5.30', '5.26', '5.22', '5.16', '5.12' ]
     name: Perl ${{ matrix.perl }}
     steps:
       - name: check out code

CHANGELOG

@@ -8,6 +8,9 @@ X.XXXX    XXXX-XX-XX
   we now have an egregious hack to work around that. See
   https://github.com/DrHyde/perl-modules-Number-Phone/issues/112
 
+- No longer auto-tested on 5.10 because a 'make test'-time dependency (Test::Deep)
+  no longer supports that.
+
 - Data updates
 
 3.8007    2022-12-02

lib/Number/Phone.pm

@@ -15,7 +15,8 @@ use Number::Phone::StubCountry;
 
 use Devel::Deprecations::Environmental
     Int32   => { unsupported_from => '2023-06-01' },
-    OldPerl => { unsupported_from => '2022-11-08', older_than => '5.10.0' };
+    OldPerl => { unsupported_from => '2022-11-08', older_than => '5.10.0' },
+    OldPerl => { unsupported_from => '2022-01-08', older_than => '5.12.0' };
 
 # MUST be in format N.NNNN, see https://github.com/DrHyde/perl-modules-Number-Phone/issues/58
 our $VERSION = '3.8007';
@@ -246,6 +247,14 @@ remove support without notice. However, because I can not automatically test, I
 can't guarantee that I won't B<accidentally> remove support. If I do
 accidentally remove it, it ain't coming back.
 
+Similarly, Perl 5.10 is not fully supported as of the version after 3.8007, whatever
+that may be. This is because there is a dependency on L<Test::Deep>, which
+dropped support for that version of perl at the start of 2023. This means that
+I can no longer automatically test on that version of perl, and you can't
+(easily) install the necessary dependencies. Depending on details of what you
+installed when, future releases of Number::Phone may or may not continue to
+work for you.
+
 =cut
 
 sub _new_args {

t/deprecations.t

@@ -3,9 +3,9 @@ use warnings;
 
 use Data::Dumper::Concise;
 use Test::More;
-use Test::Warnings qw(warning :no_end_test);
+use Test::Warnings qw(warnings :no_end_test);
 
-my $warnings = [ warning { use_ok 'Number::Phone' } ];
+my $warnings = [ warnings { use_ok 'Number::Phone' } ];
 
 if(~0 == 4294967295) {
     ok(
@@ -20,13 +20,18 @@ if(~0 == 4294967295) {
 }
 
 if($] < 5.010) {
-    ok(
-        scalar(grep { /too old/ } @{$warnings}) == 1,
+    is(
+        scalar(grep { /too old/ } @{$warnings}), 2,
+        "warned about perl being too old (for both 5.10 and 5.12)"
+    )
+} elsif($] < 5.012) {
+    is(
+        scalar(grep { /too old/ } @{$warnings}), 1,
         "warned about perl being too old"
     )
 } else {
-    ok(
-        scalar(grep { /too old/ } @{$warnings}) == 0,
+    is(
+        scalar(grep { /too old/ } @{$warnings}), 0,
         "no warnings about perl being too old"
     )
 }