UnusedImport should not be triggered for --import:mymodule

[timotheecour]

UnusedImport should not be triggered for --import:mymodule; it gets triggered on each module in the project that doesn't use mymodule.

While the current behavior is technically correct, it's more pedantic than useful.

Example

# main.nim:
import ./t0935b

# t0935b.nim:
# whatever

Current Output

nim c --import:std/times t0935.nim
UnusedImport gets triggered for each module in the project (that doesn't use the imported module)

t0935b.nim(1, 2) Warning: imported and not used: 'times' [UnusedImport]
t0935.nim(1, 2) Warning: imported and not used: 'times' [UnusedImport]

Expected Output

no warning, or, ideally, only 1 warning if imported module times was never used in the whole project

Additional Information

• devel 107352f
• would be nice to support --import:mymodule:frommodule to add the import only in frommodule