treewide: Cleanup usage of multi-arch tools

- Don't needlessly force GCC

 - Prefer using multi-arch stdenvs to using multi-arch tools directly.

pkgs/os-specific/linux/statifier/default.nix

@@ -1,7 +1,7 @@
-{ stdenv, fetchurl, gcc_multi, glibc_multi }:
+{ multiStdenv, fetchurl }:
 
 let version = "1.7.4"; in
-stdenv.mkDerivation {
+multiStdenv.mkDerivation {
   name = "statifier-${version}";
 
   src = fetchurl {
@@ -9,16 +9,14 @@ stdenv.mkDerivation {
     sha256 = "03lzkla6knjhh186b43cac410x2fmhi28pkmzb3d211n3zp5i9y8";
   };
 
-  buildInputs = [ gcc_multi glibc_multi ];
-
   phaseNames = [ "patchPhase" "installPhase" ];
 
   postPatch = ''
     sed -e s@/usr/@"$out/"@g -i */Makefile src/statifier
-    sed -e s@/bin/bash@"${stdenv.shell}"@g -i src/*.sh
+    sed -e s@/bin/bash@"${multiStdenv.shell}"@g -i src/*.sh
   '';
 
-  meta = with stdenv.lib; {
+  meta = with multiStdenv.lib; {
     description = "Tool for creating static Linux binaries";
     platforms = platforms.linux;
   };