Wrap chicken so it can find gcc.

pkgs/development/compilers/chicken/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, bootstrap-chicken ? null }:
+{ stdenv, fetchurl, makeWrapper, bootstrap-chicken ? null }:
 
 let
   version = "4.9.0.1";
@@ -31,9 +31,11 @@ stdenv.mkDerivation {
     ./0001-Introduce-CHICKEN_REPOSITORY_EXTRA.patch
   ];
 
-  buildInputs = lib.ifEnable (bootstrap-chicken != null) [
+  buildInputs = [
+    makeWrapper
+  ] ++ (lib.ifEnable (bootstrap-chicken != null) [
     bootstrap-chicken
-  ];
+  ]);
 
   preBuild = lib.ifEnable (bootstrap-chicken != null) ''
     # Backup the build* files - those are generated from hostname,
@@ -47,6 +49,14 @@ stdenv.mkDerivation {
     mv build-backup/* .
   '';
 
+  postInstall = ''
+    for f in $out/bin/*
+    do
+      wrapProgram $f \
+        --prefix PATH : ${stdenv.gcc}/bin
+    done
+  '';
+
   # TODO: Assert csi -R files -p '(pathname-file (repository-path))' == binaryVersion
 
   meta = {