Single selective import will produce a warning "module is imported but never used"

[khalyomede]

Describe the bug

When selectively importing a single statement inside of a module, a warning is raised.

Reproduction Steps

1. Create a folder "http" and a file "http/Mime.v" with this content:

module http

enum Mime {
  text_html
}

2. Create a "main.v" file and have this content:

module main

import http { Mime }

fn main() {
  mime := Mime.text_html.str()

  println(mime)
}

Interpret or compile the main file:

> v run main.v
main.v:3:8: warning: module 'http' is imported but never used
    1 | module main
    2 | 
    3 | import http { Mime }
      |        ~~~~
    4 | 
    5 | fn main() {
text_html

Expected Behavior

No warnings when selectively importing one module.

Current Behavior

It produce a warning when compiing or interpreting the code:

> v main.v
main.v:3:8: warning: module 'http' is imported but never used
    1 | module main
    2 | 
    3 | import http { Mime }
      |        ~~~~
    4 | 
    5 | fn main() {

Possible Solution

In the mean time I just import the module without selective import, and access my statement (see below).

Additional Information/Context

Simple module import produces no warnings when used in place of a single selective import. This code below will produce no warnings:

module main

import http

fn main() {
  mime := http.Mime.text_html.str()

  println(mime)
}

V version

0.4.9

Environment details (OS name and version, etc.)

V full version	V 0.4.9 9fc8352
OS	linux, N/A
Processor	8 cpus, 64bit, little endian, Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz
Memory	6.8GB/15.43GB
V executable	/opt/v/v
V last modified time	2025-01-08 03:26:40
V home dir	OK, value: /opt/v
VMODULES	OK, value: /root/.vmodules
VTMP	OK, value: /tmp/v_0
Current working dir	OK, value: /home/v
env VFLAGS	"-cc gcc"
Git version	git version 2.30.6
V git status	9fc8352 (3 commit(s) behind V master)
.git/config present	true
cc version	cc (Alpine 10.2.1_pre1) 10.2.1 20201203
gcc version	gcc (Alpine 10.2.1_pre1) 10.2.1 20201203
clang version	N/A
tcc version	tcc version 0.9.27 mob:d3e940c (x86_64 Linux)
tcc git status	thirdparty-linuxmusl-amd64 a3e24da2
emcc version	N/A
glibc version	Error: musl libc (x86_64)
Version 1.2.2
Dynamic Program Loader
Usage: /lib/ld-musl-x86_64.so.1 [options] [--] pathname

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