Install Nix: add initializeDB()

rm old message installing Nix database

rm old nix-store --init initialization

rm old ! nix-store --load-db

Author: Anton-Latukha

scripts/install-nix-from-closure.sh

@@ -677,21 +677,30 @@ installNix() {
         done
         printf '\n'
     }
+
+    initializeDB() {
+        notice "
+
+    Initializing Nix database...
+    "
+        if ! "$nix/bin/nix-store" --init; then
+            error "
+
+    Failed to initialize the Nix database
+    "
+        fi
+
+        if ! "$nix/bin/nix-store" --load-db < "$self/.reginfo"; then
+            error "
+
+    Unable to register valid paths
+    "
+        fi
+    }
 }
 
 }
 echo "performing a single-user installation of Nix..." >&2
-echo "initialising Nix database..." >&2
-if ! $nix/bin/nix-store --init; then
-    echo "$0: failed to initialize the Nix database" >&2
-    exit 1
-fi
-
-if ! "$nix/bin/nix-store" --load-db < "$self/.reginfo"; then
-    echo "$0: unable to register valid paths" >&2
-    exit 1
-fi
-
 . "$nix/etc/profile.d/nix.sh"
 
 if ! "$nix/bin/nix-env" -i "$nix"; then