nix/os,steveej-t480s-work: add podman and dependencies

nix/pkgs/slirp4netns.nix

@@ -0,0 +1,49 @@
+{ stdenv
+, fetchFromGitHub
+, autoconf
+, automake
+, libtool
+, gnumake
+, gcc
+}:
+
+stdenv.mkDerivation rec {
+  name = "slirp4netns-${version}";
+  version = "v0.2.1";
+
+  src = fetchFromGitHub {
+    owner = "rootless-containers";
+    repo = "slirp4netns";
+    rev = "${version}";
+    sha256 = "0kqncza4kgqkqiki569j7ym9pvp7879i6q2z0djvda9y0i6b80w4";
+  };
+
+  buildInputs = [
+    autoconf
+    automake
+    libtool
+    gnumake
+    gcc
+  ];
+    
+  configurePhase = ''
+    ./autogen.sh
+    ./configure --prefix=""
+  '';
+
+  buildPhase = ''
+	make
+  '';
+
+  installPhase = ''
+    make DESTDIR="$out" install
+  '';
+
+  meta = with stdenv.lib; {
+    description = "User-mode networking for unprivileged network namespaces";
+    homepage = https://github.com/rootless-containers/slirp4netns;
+    license = null;
+    maintainers = [ maintainers.steveej ];
+    platforms = platforms.all;
+  };
+}