add: warn when creating empty virtual packages

see https://gitlab.alpinelinux.org/alpine/aports/-/issues/11736 [TT: minor stylistic change]
2021-08-07 08:31:31 -04:00 · 2021-08-07 08:31:31 -04:00 · bd15683670
parent 9b3e68d4ba
commit bd15683670
2 changed files with 3 additions and 0 deletions
--- a/src/app_add.c
+++ b/src/app_add.c
@ -147,6 +147,8 @@ static int add_main(void *ctx, struct apk_ctx *ac, struct apk_string_array *args

 		virtdep.result_mask = APK_VERSION_EQUAL;
 		virtdep.version = virtpkg->version;
+
+		if (!args->num) apk_warn(out, "creating empty virtual package");
 	}

 	foreach_array_item(parg, args) {
--- a/test/basic8.test
+++ b/test/basic8.test
@ -2,5 +2,6 @@
 --no-network
 add -t .virtual
@EXPECT
+WARNING: creating empty virtual package
 (1/1) Installing .virtual (20190603.131426)
 OK: 0 MiB in 0 packages