Reapply "feat: add backups for postgres"

This reverts commit d5d242601f.

flake.lock

@@ -18,6 +18,42 @@
         "type": "github"
       }
     },
+    "flake-utils_2": {
+      "locked": {
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "krew2nix": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1716272275,
+        "narHash": "sha256-JWDyPhAJp263EVVsGrKwrJU+xdDReHsDmSe7A190/Cg=",
+        "owner": "eigengrau",
+        "repo": "krew2nix",
+        "rev": "0c1fecaab044dba1249c5d09366891ec467b4ad2",
+        "type": "github"
+      },
+      "original": {
+        "owner": "eigengrau",
+        "repo": "krew2nix",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1756819007,
@@ -37,6 +73,7 @@
     "root": {
       "inputs": {
         "flake-utils": "flake-utils",
+        "krew2nix": "krew2nix",
         "nixpkgs": "nixpkgs"
       }
     },