On Tue, 03 Feb 2026 19:03:37 +0100,
Stuart Henderson <stu@spacehopper.org> wrote:
> 
> [1  <text/plain; us-ascii (8bit)>]
> and "." is also affected
> 

It can be done for PyPi only with not that ellegant solution.

Tested with two distnames:
 - requests-cache-0.5.2
 - repoze.who-3.0.0

with my diff it catch that
 - requests-cache-0.5.2 -> 1.3.0
 - repoze.who-3.0.0 -> 3.1.0

The diff. If it's ok I'll update my PR.

diff --git a/Portroach/SiteHandler/PyPI.pm b/Portroach/SiteHandler/PyPI.pm
index 81898f1..9f26078 100644
--- a/Portroach/SiteHandler/PyPI.pm
+++ b/Portroach/SiteHandler/PyPI.pm
@@ -116,6 +116,45 @@ sub GetFiles
 	    foreach my $url (@$urls) {
 		push(@$files, $url->{filename});
 	    }
+
+	    if ($port->{ver} && $json->{releases} && $json->{releases}->{$port->{ver}}) {
+		my @distfiles = split ' ', ($port->{distfiles} || '');
+		my %seen = map { $_ => 1 } @distfiles;
+
+		foreach my $rel (@{$json->{releases}->{$port->{ver}}}) {
+		    next unless ($rel->{packagetype} && $rel->{packagetype} eq 'sdist');
+		    next unless ($rel->{filename});
+		    next if ($seen{$rel->{filename}});
+		    push @distfiles, $rel->{filename};
+		    $seen{$rel->{filename}} = 1;
+		}
+
+		foreach my $distfile (@distfiles) {
+		    next unless ($distfile =~ /^(.*?)\Q$port->{ver}\E(.*)$/);
+		    my ($prefix, $suffix) = ($1, $2);
+		    my ($name_prefix, $sep) = ($prefix, '');
+		    if ($prefix =~ /^(.*?)([-_\.])$/) {
+			($name_prefix, $sep) = ($1, $2);
+		    }
+
+		    my %alts;
+		    foreach my $ch ('-', '_', '.') {
+			my $alt_prefix = $name_prefix;
+			$alt_prefix =~ s/[-_.]+/$ch/g;
+			$alts{$alt_prefix} = 1;
+		    }
+
+		    foreach my $alt_prefix (keys %alts) {
+			my $alt = $alt_prefix . $sep . $port->{ver} . $suffix;
+			next if ($alt eq $distfile);
+			next if ($seen{$alt});
+			push @distfiles, $alt;
+			$seen{$alt} = 1;
+		    }
+		}
+
+		$port->{distfiles} = join ' ', @distfiles if (@distfiles);
+	    }
 	} else {
 	    _debug("GET failed: " . $resp->code);
 	    return 0;


-- 
wbr, Kirill