Fixed a new issue with vpkgs replacing the same vpkg they are providing.

Added a new testcase to verify its correctness.

tests/xbps/libxbps/shell/vpkg_test.sh

@@ -13,13 +13,13 @@
 # D should replace A only if it has "replaces" property on A. The result should be
 # that D must be installed and A being as is.
 
-atf_test_case vpkg_noupdate
+atf_test_case vpkg00
 
-vpkg_noupdate_head() {
+vpkg00_head() {
 	atf_set "descr" "Tests for virtual pkgs: don't update vpkg"
 }
 
-vpkg_noupdate_body() {
+vpkg00_body() {
 	mkdir some_repo
 	mkdir -p pkg_{A,B,C,D}/usr/bin
 	cd some_repo
@@ -42,6 +42,44 @@ vpkg_noupdate_body() {
 	atf_check_equal $? 0
 }
 
-atf_init_test_cases() {
-	atf_add_test_case vpkg_noupdate
+atf_test_case vpkg01
+
+vpkg01_head() {
+	atf_set "descr" "Tests for virtual pkgs: commit ebc0f27ae1c"
+}
+
+vpkg01_body() {
+	mkdir some_repo
+	mkdir -p pkg_{A,B,C,D}/usr/bin
+	mkdir -p pkg_C/usr/share/xbps/virtualpkg.d
+	echo "virtualpkg=A-1.0_1:C" > pkg_C/usr/share/xbps/virtualpkg.d/C.conf
+	cd some_repo
+	xbps-create -A noarch -n A-1.0_1 -s "A pkg" ../pkg_A
+	atf_check_equal $? 0
+	xbps-create -A noarch -n B-1.0_1 -s "B pkg" --dependencies "A>=0" ../pkg_B
+	atf_check_equal $? 0
+	xbps-create -A noarch -n C-1.0_1 -s "C pkg" --provides "A-1.0_1" --replaces="A>=0" ../pkg_C
+	atf_check_equal $? 0
+	xbps-create -A noarch -n D-1.0_1 -s "D pkg" --dependencies "C>=0" ../pkg_D
+	atf_check_equal $? 0
+
+	xbps-rindex -a *.xbps
+	atf_check_equal $? 0
+	cd ..
+
+	xbps-install -C empty.conf -r root --repository=$PWD/some_repo -dy B
+	atf_check_equal $? 0
+	xbps-install -C empty.conf -r root --repository=$PWD/some_repo -dy D
+	atf_check_equal $? 0
+
+	out=$(xbps-query -C empty.conf -r root -l|awk '{print $2}'|tr -d '\n')
+	exp="B-1.0_1C-1.0_1D-1.0_1"
+	echo "out: $out"
+	echo "exp: $exp"
+	atf_check_equal $out $exp
+}
+
+atf_init_test_cases() {
+	atf_add_test_case vpkg00
+	atf_add_test_case vpkg01
 }