feat: use iproute2 by default instead of busybox

iproute2 brings so much on the table, it's worth it.

Signed-off-by: Raito Bezarius <masterancpp@gmail.com>

modules/base.nix

@@ -130,7 +130,7 @@ in {
     nixpkgs.buildPlatform = lib.mkDefault builtins.currentSystem;
 
     defaultProfile.packages = with pkgs;
-      [ s6 s6-init-bin execline s6-linux-init s6-rc ];
+      [ s6 s6-init-bin execline s6-linux-init s6-rc iproute2 ];
     # Set the useful PS1 prompt by default.
     defaultProfile.environmentVariables.PS1 = lib.mkDefault config.defaultProfile.prompt;
 

modules/busybox.nix

@@ -37,7 +37,7 @@ let
     "comm" "cp" "cpio" "cut" "date" "dhcprelay" "dd" "df" "dirname" "dmesg"
     "du" "echo" "egrep" "env" "expand" "expr" "false" "fdisk" "fgrep" "find"
     "free" "fuser" "grep" "gunzip" "gzip" "head" "hexdump" "hostname" "hwclock"
-    "ifconfig" "ip" "ipaddr" "iplink" "ipneigh" "iproute" "iprule" "kill"
+    "ifconfig" "ipneigh" "kill"
     "killall" "killall5" "less" "ln" "ls" "lsattr" "lsof" "md5sum" "mkdir"
     "mknod" "mktemp" "mount" "mv" "nc" "netstat" "nohup" "od" "pgrep" "pidof"
     "ping" "ping6" "pkill" "pmap" "printenv" "printf" "ps" "pwd" "readlink"

overlay.nix

@@ -201,6 +201,17 @@ extraPkgs // {
     graphviz = null;
   };
 
+  iproute2 = prev.iproute2.overrideAttrs (old: {
+    postInstall = ''
+      ${(old.postInstall or "")}
+      non_necessary_binaries=("tc" "rdma" "dcb" "tipc" "vdpa")
+      for needless_binary in "$non_necessary_binaries[@]"; do
+        echo "Removing unnecessary binary $out/$needless_binary"
+        rm "$out/$needless_binary"
+      done
+    '';
+  });
+
   wpa_supplicant = prev.wpa_supplicant.override {
     dbusSupport = false;
     withPcsclite = false;