build: rename comptime vars, add -skip-unused

Dockerfile

@@ -1,6 +1,6 @@
 FROM thevlang/vlang:latest AS builder
 COPY . .
-RUN v -prod -cc gcc -cflags -static -cflags -s -d habraview_version=$(git describe --tags) . -o /habraview
+RUN v -prod -skip-unused -cc gcc -cflags -static -cflags -s -d hv_version=$(git describe --tags) . -o /habraview
 
 FROM scratch AS prod
 COPY --from=builder /habraview .

Makefile

@@ -1,2 +1,2 @@
 bin:
-	v -prod -cflags -static -d habraview_version=$$(git describe --tags) .
+	v -prod -skip-unused -cflags -static -d hv_version=$$(git describe --tags) .

habr/api.v

@@ -3,7 +3,7 @@ module habr
 import net.http
 
 pub struct Habr {
-	baseurl string = $d('habr_baseurl', 'https://habr.com')
+	baseurl string = $d('hv_habr_baseurl', 'https://habr.com')
 }
 
 pub fn Habr.new() Habr {

habraview.v

@@ -76,7 +76,7 @@ fn main() {
 		name:        'habraview'
 		usage:       '[host][:port]'
 		description: 'Habr.com posts viewer.'
-		version:     $d('habraview_version', '0.0.0')
+		version:     $d('hv_version', '0.0.0')
 		defaults:    struct {
 			man: false
 		}