jetbrains: add update script wrapper

The main script only does a single program, and requires being fed the
name. This is a wrapper to get those names.

pkgs/applications/editors/jetbrains/update-jetbrains

@@ -0,0 +1,12 @@
+#!/usr/bin/env nix-shell
+#!nix-shell --show-trace ./updater.nix -i bash
+
+set -e
+
+for app in $APPS; do
+  ./updater-jetbrains $app -o ${app%-[0-9.]*}-generated.nix
+done
+
+# Local Variables:
+# mode: sh
+# End:

pkgs/applications/editors/jetbrains/updater.nix

@@ -0,0 +1,26 @@
+{ pkgs ? import <nixpkgs> { } }:
+let
+  inherit (pkgs.stdenv) lib;
+in
+pkgs.mkShell {
+  buildInputs = [
+    pkgs.bash
+  ];
+
+  APPS = lib.mapAttrsToList
+    (k: v: v.name)
+    {
+      inherit (pkgs.jetbrains)
+        clion
+        datagrip
+        goland
+        idea-community
+        idea-ultimate
+        phpstorm
+        pycharm-community
+        pycharm-professional
+        rider
+        ruby-mine
+        webstorm;
+    };
+}