kiss: fix pkg conflicts

kiss

@@ -574,8 +574,6 @@ pkg_conflicts() {
     # Check to see if a package conflicts with another.
     log "$2" "Checking for package conflicts"
 
-    set +ef
-
     # Filter the tarball's manifest and select only files
     # and any files they resolve to on the filesystem \
     # (/bin/ls -> /usr/bin/ls).
@@ -584,20 +582,36 @@ pkg_conflicts() {
 
         printf '%s\n' "$file"
 
-        (cd "$KISS_ROOT/" && readlink -f "./$file") ||:
-    done |
+        readlink -f "$KISS_ROOT/$file" ||:
+    done > "$cac_dir/$pid-m"
 
-    # Filter the existing file list through the manifest of the
-    # presently installed version of the package (if it exists).
-    grep -svFxf "$sys_db/$2/manifest" - 2>/dev/null > "$cac_dir/$pid-m"
+    p_name=$2
 
-    # If the generated manifest contains matches, check the
-    # contents for conflicts.
+    # Generate a list of all installed package manifests.
+    set +ef
+    set -f -- "$sys_db"/*/manifest
+
+    # Filter the manifest list and remove the previously
+    # installed version of the package if it exists.
+    for pkg; do
+        i_name=${pkg%/*}
+        i_name=${i_name##*/}
+
+        shift
+
+        [ "$p_name" = "$i_name" ] && continue
+
+        set -- "$@" "$pkg"
+    done
+
+    # Use 'grep' to list matching lines between the to
+    # be installed package's manifest and the above filtered
+    # list.
     [ -s "$cac_dir/$pid-m" ] &&
-        grep -Fxf "$cac_dir/$pid-m" -- "$sys_db"/*/manifest &&
-            die "Package '$2' conflicts with another package"
+        grep -Fxf "$cac_dir/$pid-m" -- "$@" &&
+            die "Package '$p_name' conflicts with another package"
 
-    set -ef
+    set -e
 }
 
 pkg_remove() {