gambit: 4.8.6 -> 4.8.8-f3ffeb6

Using a yet unreleased development version of gambit,
so as to be able to build a recent gerbil.

Update the way gambit is bootstrapped, which involves building a
release version of gambit (which for a development gambit, is not the
same version as the current version of gambit).

pkgs/development/compilers/gambit/bootstrap.nix

@@ -0,0 +1,41 @@
+{ stdenv, fetchurl, autoconf, ... }:
+
+stdenv.mkDerivation rec {
+  name    = "gambit-bootstrap-${version}";
+  version = "4.8.8";
+  tarball_version = "v4_8_8";
+
+  src = fetchurl {
+    url    = "http://www.iro.umontreal.ca/~gambit/download/gambit/v4.8/source/gambit-${tarball_version}-devel.tgz";
+    sha256 = "075k2z04d6svxqf9paj3xvp0mm0xzy0vbma1y61s0lkywdim8xjz";
+  };
+
+  buildInputs = [ autoconf ];
+
+  configurePhase = ''
+    ./configure --prefix=$out --enable-single-host
+  '';
+
+  buildPhase = ''
+    # Copy the (configured) sources now, not later, so we don't have to filter out
+    # all the intermediate build products.
+    mkdir -p $out ; cp -rp . $out/
+
+    # build the gsc-boot* compiler
+    make bootstrap
+  '';
+
+  installPhase = ''
+    cp -fa ./ $out/
+  '';
+
+  forceShare = [ "info" ];
+
+  meta = {
+    description = "Optimizing Scheme to C compiler, bootstrap step";
+    homepage    = "http://gambitscheme.org";
+    license     = stdenv.lib.licenses.lgpl2;
+    platforms   = stdenv.lib.platforms.linux;
+    maintainers = with stdenv.lib.maintainers; [ thoughtpolice raskin fare ];
+  };
+}