Perhaps I should uninstall all of Tk and repeat that command

Yes- that's the next thing to try. (Even if the uninstall fails, just forcing a reinstallation of that Tk distro should suffice.)
It seems odd to me that "cpanm --install Tk::Canvas" tried to install Tk first. It suggests that your existing Tk installation is also unusable.

Cheers,
Rob

In reply to Re^3: Tk::Canvas not working by syphilis
in thread Tk::Canvas not working by BillKSmith

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