Update cosmic-launcher

Had link directly to the offical wiki, and replaced instructions for installation to match the wiki

README.md

@@ -138,18 +138,19 @@ For more information, check the [Fedora Wiki COSMIC SIG page](https://fedoraproj
 The COSMIC module on NixOS can be enabled by adding the following lines to
 your NixOS configuration file (`configuration.nix` or in your Flake):
 ```nix
-  # Enable the login manager
+{
+  # Enable the COSMIC login manager
   services.displayManager.cosmic-greeter.enable = true;
-  # Enable the COSMIC DE itself
+
+  # Enable the COSMIC desktop environment
   services.desktopManager.cosmic.enable = true;
-  # Enable XWayland support in COSMIC
-  services.desktopManager.cosmic.xwayland.enable = true;
+}
 ```
 
 While some packages like `cosmic-session` might be present in prior versions,
 the modules that add full support for COSMIC were added in **NixOS 25.05**.
 
-You can find more details in the [NixOS 25.05 release notes](https://nixos.org/manual/nixos/unstable/release-notes#sec-release-25.05).
+You can find more details on the [NixOS Wiki](https://wiki.nixos.org/wiki/COSMIC).
 
 
 ## Installing on openSUSE tumbleweed
@@ -176,11 +177,15 @@ For further information, you may check the [Gentoo Wiki](https://wiki.gentoo.org
 
 ## Setup on distributions without packaging of COSMIC components
 
-The COSMIC desktop environment requires a few dependencies:
+The COSMIC desktop environment requires a few dependencies. The rustc and just packages of your distro may be too old, so we recommend installing rustc and cargo with rustup, and installing just with cargo.
 (This list does not try to be exhaustive, but rather tries to provide a decent starting point. For detailed instructions, check out the individual projects):
 
 - [just](https://github.com/casey/just)
 - rustc
+- cargo
+- c compiler (cc)
+- make
+- git
 - libwayland
 - mesa (or third-party libEGL/libGL implementations, though interfacing with mesa's libglvnd is generally recommended).
 - libseat
@@ -188,16 +193,17 @@ The COSMIC desktop environment requires a few dependencies:
 - libinput
 - udev
 - dbus
+- libdisplay-info-dev
+- libgstreamer1.0-dev
+- libgstreamer-plugins-base1.0-dev
 
 optionally (though the build-system might currently require these libraries):
 - libsystem
 - libpulse
-- pop-launcher
 - libexpat1
 - libfontconfig
 - libfreetype
 - lld
-- cargo
 - libgbm-dev
 - libclang-dev
 - libpipewire-0.3-dev
@@ -206,17 +212,79 @@ Note: `libfontconfig`, `libfreetype`, and `lld` are packages specific to Linux d
 
 The required ones can be installed with:
 ```
-sudo apt install just rustc libglvnd-dev libwayland-dev libseat-dev libxkbcommon-dev libinput-dev udev dbus libdbus-1-dev libpam0g-dev libpixman-1-dev libssl-dev libflatpak-dev -y
+sudo apt install -y \
+  build-essential \
+  dbus \
+  git \
+  libdbus-1-dev \
+  libdisplay-info-dev \
+  libflatpak-dev \
+  libglvnd-dev \
+  libgstreamer-plugins-base1.0-dev \
+  libgstreamer1.0-dev \
+  libinput-dev \
+  libpam0g-dev \
+  libpixman-1-dev \
+  libseat-dev \
+  libssl-dev \
+  libwayland-dev \
+  libxkbcommon-dev \
+  rustup \
+  udev
+
+rustup toolchain install stable
+cargo install just
 ```
 
 and the optional ones with:
 ```
-sudo apt install libsystemd-dev libpulse-dev pop-launcher libexpat1-dev libfontconfig-dev libfreetype-dev mold cargo libgbm-dev libclang-dev libpipewire-0.3-dev -y
+sudo apt install -y \
+  libclang-dev \
+  libexpat1-dev \
+  libfontconfig-dev \
+  libfreetype-dev \
+  libgbm-dev \
+  libpipewire-0.3-dev \
+  libpulse-dev \
+  libsystemd-dev \
+  lld \
+  mold
 ```
 
 They can be installed all at once with:
 ```
-sudo apt install just rustc libglvnd-dev libwayland-dev libseat-dev libxkbcommon-dev libinput-dev udev dbus libdbus-1-dev libsystemd-dev libpixman-1-dev libssl-dev libflatpak-dev libpulse-dev pop-launcher libexpat1-dev libfontconfig-dev libfreetype-dev mold cargo libgbm-dev libclang-dev libpipewire-0.3-dev libpam0g-dev -y
+sudo apt install -y \
+  build-essential \
+  dbus \
+  git \
+  libclang-dev \
+  libdbus-1-dev \
+  libdisplay-info-dev \
+  libexpat1-dev \
+  libflatpak-dev \
+  libfontconfig-dev \
+  libfreetype-dev \
+  libgbm-dev \
+  libglvnd-dev \
+  libgstreamer-plugins-base1.0-dev \
+  libgstreamer1.0-dev \
+  libinput-dev \
+  libpam0g-dev \
+  libpipewire-0.3-dev \
+  libpixman-1-dev \
+  libpulse-dev \
+  libseat-dev \
+  libssl-dev \
+  libsystemd-dev \
+  libwayland-dev \
+  libxkbcommon-dev \
+  lld \
+  mold \
+  rustup \
+  udev
+
+rustup toolchain install stable
+cargo install just
 ```
 
 ### Testing