rtl8723cs-wowlan: remove dependency on moreutils

overlays/cross.nix

@@ -7,7 +7,6 @@
 #   - portfolio -> {glib,cairo,pygobject}-dev
 #   - komikku -> python3.10-brotlicffi -> python3.10-cffi
 #   - many others. python3.10-cffi seems to be the offender which infects 70% of consumers though
-# - 2023/10/10: moreutils pulls in unnecessarily many emulated deps
 # - 2023/10/11: build ruby is pulled in by `neovim`:
 #   - nix why-depends --all /nix/store/rhli8vhscv93ikb43639c2ysy3a6dmzp-nixos-system-moby-23.11.20231011.30c7fd8 /nix/store/5xbwwbyjmc1xvjzhghk6r89rn4ylidv8-ruby-3.1.4
 # - 2023/10/11: build coreutils pulled in by rpm
@@ -1234,13 +1233,6 @@ in {
   #   # '';
   # });
 
-  moreutils = prev.moreutils.override {
-    # depends on perl IPC-Run -> IO-Tty, the latter does not cross
-    # - IO-Tty stands very small chance of ever compiling w/o straight up emulation.
-    # N.B. only perl+perlPackages have to be emulated, but emulating stdenv actually reduces the closure
-    inherit (emulated) perl perlPackages stdenv;
-  };
-
   mpv-unwrapped = prev.mpv-unwrapped.overrideAttrs (upstream: {
     # 2023/10/10: upstreaming is easiest to do after the next staging -> master merge
     #   otherwise the result will still have a transient dep on python.

pkgs/additional/rtl8723cs-wowlan/default.nix

@@ -1,6 +1,6 @@
 { static-nix-shell
+, hostname-debian
 , iw
-, moreutils
 , wirelesstools
 }:
 
@@ -8,7 +8,7 @@ static-nix-shell.mkPython3Bin {
   pname = "rtl8723cs-wowlan";
   src = ./.;
   pkgs = {
-    inherit iw moreutils wirelesstools;
+    inherit hostname-debian iw wirelesstools;
   };
 }
 

pkgs/additional/rtl8723cs-wowlan/rtl8723cs-wowlan

@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -i python3 -p "python3.withPackages (ps: [  ])" -p iw -p moreutils -p wirelesstools
+#!nix-shell -i python3 -p "python3.withPackages (ps: [  ])" -p hostname-debian -p iw -p wirelesstools
 # vim: set filetype=python :
 
 # common operations:
@@ -7,8 +7,6 @@
 # arp --dest-ip A.B.C.D
 # tcp --source-port N
 
-KNOWN_INTERFACES = ("wlan0", "wlp3s0", "enp5s0")
-
 import argparse
 import logging
 import subprocess
@@ -21,17 +19,9 @@ def octet_to_hex(o: int) -> str:
 
 def get_ipaddrs() -> list['IpAddr']:
     ''' return the IP address of all known interfaces '''
-    addrs = []
-    for iface in KNOWN_INTERFACES:
-        try:
-            # errors if interface isn't known, or ip addr fails to parse (e.g. 'NON-IP')
-            maybe_addr = subprocess.check_output(['ifdata', '-pa', iface]).decode('utf-8')
-            addr = IpAddr(maybe_addr)
-        except: pass
-        else:
-            addrs.append(addr)
-    logger.debug(f'get_ipaddrs got: {[str(a) for a in addrs]}')
-    return addrs
+    addrs = subprocess.check_output(['hostname', '--all-ip-addresses']).decode('utf-8').strip().split(' ')
+    logger.debug(f'get_ipaddrs got: {addrs}')
+    return [ IpAddr(a) for a in addrs ]
 
 
 class Encodable: