Failed attempt (keeping in the git history incase I want to try again at some point) at adding cross compilation using cross (and thus podman which needed allot of stuff)

flake.nix

@@ -39,7 +39,31 @@
     {
       # Development environment output
       devShells = forAllSystems ({ pkgs }: {
-        default = pkgs.mkShell {
+        default = let
+        podmanSetupScript = let
+          registriesConf = pkgs.writeText "registries.conf" ''
+            [registries.search]
+            registries = ['docker.io']
+            [registries.block]
+            registries = []
+          '';
+        in pkgs.writeScript "podman-setup" ''
+          #!${pkgs.runtimeShell}
+          # Dont overwrite customised configuration
+          if ! test -f ~/.config/containers/policy.json; then
+            install -Dm555 ${pkgs.skopeo.src}/default-policy.json ~/.config/containers/policy.json
+          fi
+          if ! test -f ~/.config/containers/registries.conf; then
+            install -Dm555 ${registriesConf} ~/.config/containers/registries.conf
+          fi
+        '';
+
+        # Provides a fake "docker" binary mapping to podman
+        dockerCompat = pkgs.runCommandNoCC "docker-podman-compat" {} ''
+            mkdir -p $out/bin
+            ln -s ${pkgs.podman}/bin/podman $out/bin/docker
+          '';
+        in pkgs.mkShell {
           # The Nix packages provided in the environment
           packages = (with pkgs; [
             # Fluff
@@ -66,15 +90,22 @@
              # If on wayland
              libxkbcommon
              wayland
+            # Cross compilation
+            cargo-cross
+            podman # needed by cargo-cross
             # Rust
+            rustup
             rustToolchain
           ]) ++ pkgs.lib.optionals pkgs.stdenv.isDarwin (with pkgs; [ libiconv ]);
           shellHook = ''
+            # Required
             export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:${pkgs.lib.makeLibraryPath [
               pkgs.alsaLib
               pkgs.udev
               pkgs.vulkan-loader
             ]}"
+            ${podmanSetupScript}
+            # Aliases and other fluff/ease of use
             alias runIntel="nixVulkanIntel cargo run"
             alias runMommyIntel="nixVulkanIntel cargo mommy run"
             onefetch