It seems that Mojolicious has to be specified as a prereq:
Can't locate Mojo/Util.pm in @INC (you may need to install the Mojo::Util module) (@INC contains: /home/cpansand/.cpan/build/2021040810/App-tt-0.16-4/blib/lib /home/cpansand/.cpan/build/2021040810/App-tt-0.16-4/blib/arch /home/cpansand/.local/share/.cpan/build/2021040810/Applify-0.22-0/blib/arch /home/cpansand/.local/share/.cpan/build/2021040810/Applify-0.22-0/blib/lib /home/cpansand/.local/share/.cpan/build/2021040810/Applify-0.22-0/blib/arch /home/cpansand/.local/share/.cpan/build/2021040810/Applify-0.22-0/blib/lib /opt/perl-5.30.0t/lib/site_perl/5.30.0/x86_64-linux-thread-multi /opt/perl-5.30.0t/lib/site_perl/5.30.0 /opt/perl-5.30.0t/lib/5.30.0/x86_64-linux-thread-multi /opt/perl-5.30.0t/lib/5.30.0 .) at t/tt.t line 15.
BEGIN failed--compilation aborted at t/tt.t line 15.
t/tt.t ........
Dubious, test returned 2 (wstat 512, 0x200)
No subtests run
It seems that Mojolicious has to be specified as a prereq: