com.cisco.PacketTracer.yml: update

README.md: update
Makefile: add install-deps

Signed-off-by: unexplrd <unexplrd@linerds.us>

README.md

@@ -11,7 +11,16 @@
 
 ## About
 
-This is a Flatpak manifest for [Cisco's Packet Tracer](https://www.netacad.com/courses/packet-tracer). The Deb package in which Cisco distributes their binary build of Packet Tracer is not included as the download link for and use of Packet Tracer itself requires a Netacad account.
+This is a fork of [Flatpak manifest](https://github.com/losuler/com.cisco.PacketTracer) for [Cisco's Packet Tracer](https://www.netacad.com/courses/packet-tracer). The Deb package in which Cisco distributes their binary build of Packet Tracer is not included as the download link for and use of Packet Tracer itself requires a Netacad account, which can be bypassed with disabled networking.
+
+## Changes from upstream
+- Manifest changes:
+    - Updated platforms (from 22.08 to 24.08)
+    - Restricted permissions on network and filesystem (xdg-download/packettracer instead of xdg-download)
+    - Added `QT_QPA_PLATFORM=xcb` envvar
+- Makefile changes:
+    - Added `install-deps` option
+
 
 This is currently based on Packet Tracer 8.2.1 and is intended to track the latest release. For previous releases see [janymal/PacketTracer7-flatpak](https://github.com/janymal/PacketTracer7-flatpak) and [rpallai/flatpak-pt](https://github.com/rpallai/flatpak-pt).
 
@@ -20,32 +29,21 @@ This is currently based on Packet Tracer 8.2.1 and is intended to track the late
 1. Clone this repository.
 
     ```bash
-    git clone https://github.com/losuler/com.cisco.PacketTracer
+    git clone https://gitea.linerds.us/unexplrd/com.cisco.PacketTracer
     ```
 
-2. Install build dependencies (using your preferred package manager).
-
-    ```bash
-    dnf install flatpak-builder
-    ```
-
-3. Install Flatpak runtime dependencies.
-
-    ```bash
-    flatpak install \
-        org.kde.Sdk/x86_64/5.15-22.08 \
-        io.qt.qtwebengine.BaseApp/x86_64/5.15-22.08
-    ```
-
-4. Download the official Deb package to the cloned repository (don't rename it).
+2. Download the official Deb package to the cloned repository (don't rename it).
 
     https://skillsforall.com/resources/lab-downloads
 
-5. Build and install the Flatpak.
+3. Pull dependencies and run build with Nix:
 
     ```bash
-    cd com.cisco.PacketTracer
-    flatpak-builder --install --user build com.cisco.PacketTracer.yml
+    nix-shell -p flatpak-builder appstream gnumake --run 'make install'
+    ```
+    or
+    ```bash
+    nix shell nixpkgs#{flatpak-builder,appstream,gnumake} -c make install
     ```
 
 ## Notes