input requires a file, not a dir. Anyway, @INPUT@is not used
I don't know enough meson to say whether this is correct or not, but I can confirm this makes edi build with meson-0.61.1 and meson-0.60.3. So it fixes the issue and doesn't break with older meson. +ACK with thanks!
8ba3da9bcae03d3c44a6cb066e4e6a64c1540773 committed it