podman: Wrap packages required to run containers

pkgs/applications/virtualization/podman/wrapper.nix

@@ -0,0 +1,48 @@
+{ podman-unwrapped
+, runCommand
+, makeWrapper
+, lib
+, extraPackages ? []
+, podman # Docker compat
+, runc # Default container runtime
+, crun # Default container runtime (cgroups v2)
+, conmon # Container runtime monitor
+, slirp4netns # User-mode networking for unprivileged namespaces
+, fuse-overlayfs # CoW for images, much faster than default vfs
+, utillinux # nsenter
+, cni-plugins
+, iptables
+}:
+
+let
+  podman = podman-unwrapped;
+
+  binPath = lib.makeBinPath ([
+    runc
+    crun
+    conmon
+    slirp4netns
+    fuse-overlayfs
+    utillinux
+    iptables
+  ] ++ extraPackages);
+
+in runCommand podman.name {
+  inherit (podman) name pname version meta outputs;
+  nativeBuildInputs = [
+    makeWrapper
+  ];
+
+} ''
+  # Symlink everything but $bin from podman-unwrapped
+  ${
+    lib.concatMapStringsSep "\n"
+    (o: "ln -s ${podman.${o}} ${placeholder o}")
+    (builtins.filter (o: o != "bin")
+    podman.outputs)}
+
+  mkdir -p $bin/bin
+  ln -s ${podman-unwrapped}/share $bin/share
+  makeWrapper ${podman-unwrapped}/bin/podman $bin/bin/podman \
+    --prefix PATH : ${binPath}
+''