Add gurobipy for python2.7 on Linux

pkgs/development/python-modules/gurobipy/linux.nix

@@ -0,0 +1,35 @@
+{ stdenv, fetchurl, python }:
+assert python.isPy27;
+let utf = if python.ucsEncoding == 2
+            then "16"
+          else if python.ucsEncoding == 4
+            then "32"
+          else throw "Unsupported python UCS encoding UCS${toString python.ucsEncoding}";
+in
+stdenv.mkDerivation
+  { name = "gurobipy-7.0.2";
+    src = fetchurl
+      { url = "http://packages.gurobi.com/7.0/gurobi7.0.2_linux64.tar.gz";
+        sha256 = "1lgdj4cncjvnnw8dppiax7q2j8121pxyg9iryj8v26mrk778dnmn";
+      };
+    buildCommand =
+      ''
+        # Unpack
+        tar xf $src
+
+        # Install
+        cd gurobi*/linux64
+        mkdir -p $out/lib/python2.7/site-packages
+        mv lib/python2.7_utf${utf}/gurobipy \
+          $out/lib/python2.7/site-packages
+        mv lib/python2.7_utf${utf}/gurobipy.so \
+          $out/lib/python2.7/site-packages/gurobipy
+        mv lib/libaes*.so* lib/libgurobi*.so* $out/lib
+
+        # Fixup
+        patchelf --set-rpath $out/lib \
+          $out/lib/python2.7/site-packages/gurobipy/gurobipy.so
+        patchelf --add-needed libaes70.so \
+          $out/lib/python2.7/site-packages/gurobipy/gurobipy.so
+      '';
+  }

pkgs/top-level/python-packages.nix

@@ -5634,6 +5634,8 @@ in {
     then callPackage ../development/python-modules/gurobipy/darwin.nix
            { inherit (pkgs.darwin) cctools insert_dylib;
            }
+  else if stdenv.system == "x86_64-linux"
+    then callPackage ../development/python-modules/gurobipy/linux.nix {}
   else throw "gurobipy not yet supported on ${stdenv.system}";
 
   helper = buildPythonPackage rec {