Add custom zcat wrapper which adds an ETA progress

Useful when importing large database dumps.

home/packages/custom/default.nix

@@ -9,6 +9,7 @@
   (callPackage ./nextcloud-sync/from-local.nix { })
   (callPackage ./nextcloud-sync/from-remote.nix { })
   (callPackage ./typo3-documentation-rendering { })
+  (callPackage ./zcat-progress { })
   (callPackage ./project {
     inherit ownLib;
   })

home/packages/custom/zcat-progress/default.nix

@@ -0,0 +1,18 @@
+{
+  writeShellApplication
+  , pv
+  , gzip
+}:
+
+writeShellApplication {
+  name = "custom-zcat-with-progress";
+
+  runtimeInputs = [
+    pv
+    gzip
+  ];
+
+  text = ''
+    zcat "$1" | pv -s "$(gzip -dc "$1" | wc -c)"
+  '';
+}