diff --git a/common/xbps-src/shutils/consistency_check.sh b/common/xbps-src/shutils/consistency_check.sh
new file mode 100644
index 00000000000..0dbb194e46b
--- /dev/null
+++ b/common/xbps-src/shutils/consistency_check.sh
@@ -0,0 +1,79 @@
+# vim: set ts=4 sw=4 et:
+
+consistency_check_existing () {
+    while IFS=" " read -r dep origname deplabel; do
+        [ -f "$XBPS_SRCPKGDIR/$dep/template" ] && continue
+        case "$deplabel" in
+            makedepends|hostmakedepends)
+                msg_warn "unsatisfied $deplabel in $origname: $dep does not exist\n";
+                ;;
+            *) printf "%s %s %s\n" "$dep" "$origname" "$deplabel" ;;
+        esac
+    done
+}
+
+consistency_convert_pkgname () {
+    local origname= pkgname version= revision=
+    while IFS=" " read -r dep origname deplabel; do
+        case "$deplabel" in
+            makedepends|hostmakedepends)
+                printf "%s %s %s\n" "$dep" "$origname" "$deplabel"
+                continue
+                ;;
+        esac
+        case "$dep" in
+            *\<*|*\>*|*=*) 
+                printf "%s %s %s\n" "$dep" "$origname" "$deplabel"
+                continue
+                ;;
+        esac
+        if pkgname=$(xbps-uhelper getpkgname "$dep" 2> /dev/null) && \
+            version=$(xbps-uhelper getpkgversion "$dep" 2> /dev/null) && \
+            revision=$(xbps-uhelper getpkgrevision "$dep" 2> /dev/null); then
+            printf "%s %s %s\n" "${pkgname}>=${version}_${revision}" "$origname" "$deplabel"
+        else
+            printf "%s %s %s\n" "$dep>=0" "$origname" "$deplabel"
+        fi
+    done
+}
+
+consistency_check_smart () {
+    local pkgname= depdef= dep=
+    while IFS=" " read -r depdef origname deplabel; do
+        case "$deplabel" in
+            makedepends|hostmakedepends)
+                printf "%s %s %s\n" "$depdef" "$origname" "$deplabel"
+                continue
+                ;;
+        esac
+
+        dep=$(xbps-uhelper getpkgdepname "$depdef")
+
+        if [ ! -f "$XBPS_SRCPKGDIR/$dep/template" ]; then
+            msg_warn "unsatisfied $deplabel in $origname: $dep does not exist\n";
+            continue
+        fi
+        (
+            XBPS_TARGET_PKG=$dep
+            read_pkg
+            xbps-uhelper pkgmatch "$depdef" "${pkgname}-${version}_${revision}" && continue
+            msg_red "unsatisfied $deplabel in $origname: $dep is $version, but required is $depdef\n";
+        )
+    done
+}
+
+consistency_check() {
+    local pkg= pkgname=
+    for pkg in "$XBPS_SRCPKGDIR"/*/template; do
+        XBPS_TARGET_PKG=$(basename $(dirname $pkg))
+        (
+            read_pkg
+            [ "$depends" ] && printf "%s $pkgname depends\n" $depends
+            [ "$conflicts" ] && printf "%s $pkgname conflicts\n" $conflicts
+            [ -L "$XBPS_SRCPKGDIR/$XBPS_TARGET_PKG" ] && continue
+            [ "$makedepends" ] && printf "%s $pkgname makedepends\n" $makedepends
+            [ "$hostmakedepends" ] && printf "%s $pkgname hostmakedepends\n" $hostmakedepends
+        )
+    done | grep -v "^virtual?" | sed "s/^[^ ]*?//" | consistency_check_existing | \
+        consistency_convert_pkgname | consistency_check_smart
+}
diff --git a/xbps-src b/xbps-src
index 4747076800c..3e38212c8fb 100755
--- a/xbps-src
+++ b/xbps-src
@@ -30,6 +30,9 @@ bootstrap-update
 build <pkgname>
     Build package source (fetch + extract + configure + build).
 
+consistency-check
+    Runs a consistency check on all packages
+
 chroot
     Enter to the chroot in <masterdir>.
 
@@ -677,6 +680,9 @@ case "$XBPS_TARGET" in
             remove_pkg $XBPS_CROSS_BUILD
         fi
         ;;
+    consistency-check)
+        consistency_check
+        ;;
     remove-autodeps)
         if [ -n "$CHROOT_READY" -a -z "$IN_CHROOT" ]; then
             chroot_handler remove-autodeps