Install podman-desktop via nixpkgs (#881)

* Install podman-desktop in macOS via nixpkgs

* Also install podman-desktop on NixOS

* Add podman-desktop icon in GNOME dock

home-manager/darwin.nix

@@ -53,6 +53,8 @@ lib.mkMerge [
         # https://github.com/NixOS/nixpkgs/blob/bba8dffd3135f35810e9112c40ee621f4ede7cca/pkgs/by-name/ze/zed-editor/package.nix#L217-L219
         # edge-pkgs.zed-editor
 
+        edge-pkgs.podman-desktop # Useable since https://github.com/NixOS/nixpkgs/pull/343648
+
         edge-pkgs.signal-desktop # Useable since https://github.com/NixOS/nixpkgs/pull/348165
 
         homemade-pkgs.maccy

home-manager/gnome.nix

@@ -46,6 +46,7 @@ in
           "dev.zed.Zed.desktop"
           "firefox.desktop"
           "google-chrome.desktop"
+          "podman-desktop.desktop"
           "io.gitlab.news_flash.NewsFlash.desktop"
           amazon_music-pwa-file
           "org.gnome.Rhythmbox3.desktop"

home-manager/packages.nix

@@ -99,7 +99,6 @@
   # - Enable special module for Nix OS.
   # - Linux package does not contain podman-remote, you should install uidmap with apt and use this podman as actual engine
   #   https://github.com/NixOS/nixpkgs/blob/194846768975b7ad2c4988bdb82572c00222c0d7/pkgs/applications/virtualization/podman/default.nix#L112-L116
-  # - In darwin, this package will be used for podman-remote, you should manually install podman-desktop for the engine
   podman
   podman-tui
   docker-compose

nixos/desktop/default.nix

@@ -112,6 +112,8 @@
       edge-pkgs.zed-editor
       # Adding for zed instead of zeditor since https://github.com/NixOS/nixpkgs/pull/344193. Also keep original zed-editor package here to add icons for GUI
       homemade-pkgs.zed
+
+      edge-pkgs.podman-desktop
     ]
     ++ (with pkgs; [
       firefox