feat: provide jq correct

Author: samrose

ansible/files/postgres_prestart.sh.j2

@@ -51,9 +51,8 @@ get_pg_cron_version() {
         return
     fi
 
-    # Run jq from nixpkgs
     local version
-    version=$(nix run nixpkgs#jq -- -r '.pg_cron // empty' "/root/pg_extensions.json")
+    version=$(jq -r '.pg_cron // empty' "/root/pg_extensions.json")
     if [ -z "$version" ]; then
         log "pg_cron: Not specified in extensions file"
         return

ansible/tasks/stage2-setup-postgres.yml

@@ -94,7 +94,7 @@
 - name: Install jq from nix binary cache
   become: yes
   shell: |
-    sudo -u postgres bash -c ". /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh && nix profile install nixpkgs#jq"
+    . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh && nix profile install nixpkgs#jq --profile /nix/var/nix/profiles/default
   when: stage2_nix
 
 - name: Set ownership and permissions for /etc/ssl/private