scan-copyrigths fails on texlive-extra on Trixie

Background

Tool scan-copyrights reports an error while trying to scan package texlive-extra on Debian Trixie.

Generating copyright data...
Attribute (main_grant_weight) does not pass the type constraint because: Validation failed for 'Int' with value undef at /usr/lib/x86_64-linux-gnu/perl5/5.40/Mouse/Util.pm line 395.
	Mouse::Util::throw_error(Mouse::Meta::Attribute=HASH(0x604a845790e8), "Attribute (main_grant_weight) does not pass the type constrai"..., "data", undef, "depth", -1) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 278
	Dpkg::Copyright::Grant::ByDir::main_grant(Dpkg::Copyright::Grant::ByDir=HASH(0x604a872076d8)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 221
	Dpkg::Copyright::Grant::ByDir::count_dir_grant(Dpkg::Copyright::Grant::ByDir=HASH(0x604a871a4d50), HASH(0x604a85503930), HASH(0x604a8568a2b8)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 199
	Dpkg::Copyright::Grant::ByDir::count_grant(Dpkg::Copyright::Grant::ByDir=HASH(0x604a871a4d50)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 271
	Dpkg::Copyright::Grant::ByDir::main_grant(Dpkg::Copyright::Grant::ByDir=HASH(0x604a871a4d50)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 221
	Dpkg::Copyright::Grant::ByDir::count_dir_grant(Dpkg::Copyright::Grant::ByDir=HASH(0x604a871a4b58), HASH(0x604a85178a60), HASH(0x604a8573a6c0)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 199
	Dpkg::Copyright::Grant::ByDir::count_grant(Dpkg::Copyright::Grant::ByDir=HASH(0x604a871a4b58)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 271
	Dpkg::Copyright::Grant::ByDir::main_grant(Dpkg::Copyright::Grant::ByDir=HASH(0x604a871a4b58)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 221
	Dpkg::Copyright::Grant::ByDir::count_dir_grant(Dpkg::Copyright::Grant::ByDir=HASH(0x604a871a3f78), HASH(0x604a856e0f68), HASH(0x604a855949c8)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 199
	Dpkg::Copyright::Grant::ByDir::count_grant(Dpkg::Copyright::Grant::ByDir=HASH(0x604a871a3f78)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 271
	Dpkg::Copyright::Grant::ByDir::main_grant(Dpkg::Copyright::Grant::ByDir=HASH(0x604a871a3f78)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 221
	Dpkg::Copyright::Grant::ByDir::count_dir_grant(Dpkg::Copyright::Grant::ByDir=HASH(0x604a852c4620), HASH(0x604a8454aa08), HASH(0x604a8454a990)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 199
	Dpkg::Copyright::Grant::ByDir::count_grant(Dpkg::Copyright::Grant::ByDir=HASH(0x604a852c4620)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 271
	Dpkg::Copyright::Grant::ByDir::main_grant(Dpkg::Copyright::Grant::ByDir=HASH(0x604a852c4620)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 385
	Dpkg::Copyright::Grant::ByDir::debian_full_data(Dpkg::Copyright::Grant::ByDir=HASH(0x604a852c4620)) called at /usr/share/perl5/Dpkg/Copyright/Grant/ByDir.pm line 418
	Dpkg::Copyright::Grant::ByDir::debian_full_record(Dpkg::Copyright::Grant::ByDir=HASH(0x604a852c4620)) called at /usr/share/perl5/Dpkg/Copyright/Scanner.pm line 56
	Dpkg::Copyright::Scanner::generate_copyright() called at /usr/share/perl5/Dpkg/Copyright/Scanner.pm line 64
	Dpkg::Copyright::Scanner::print_copyright() called at /usr/bin/scan-copyrights line 37

Reproducibility

How often the issue is hit when repeating the steps to reproduce and changing nothing?

Put the ✅ in the most appropriate entry:

1. ✅ always
2. often, but not always
3. rarely

Impact of bug

The source package build pipeline is not able to run.

Outcomes

• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1091179

Management data

This section is for management only, it should be the last one in the description.

/cc @em @Balasubramanian @sudarshan @wlozano

Phabricator link: https://phabricator.apertis.org/T10844