meson: Do not use full_path for file objects

[nirbheek]

The full path will be inserted automatically here.

[eli-schwartz]

The full path will be inserted automatically here.

Unfortunately, this is false. It would work if the custom_target was added as its own array element to a command: kwarg. The generated compiler macro is:

'-DPSL_DAFSA="<CustomTarget 59830eb@@psl.dafsa@cus: ['"'"'/usr/bin/python3.10'"'"', <File: src/psl-make-dafsa (not built)>, '"'"'--output-format=binary'"'"', '"'"'@INPUT@'"'"', '"'"'@OUTPUT@'"'"']>"'

mesonbuild/meson#11834 would make this into a warning:

NOTICE: Future-deprecated features used:
 * 1.2.0: {'str.format: Value other than strings, integers, bools, options, dictionaries and lists thereof.'}

[nirbheek]

Okay, then we have to do this: #211

[eli-schwartz]

Yup, that looks a lot safer and should probably work.