diff -up src/module_list.py.orig src/module_list.py
--- src/module_list.py.orig	2017-11-08 06:12:26.727906504 -0500
+++ src/module_list.py	2017-11-08 06:14:29.020911187 -0500
@@ -163,7 +163,6 @@ library_order["stdc++"] = 1000
 ###
 #############################################################
 
-from sage_setup.optional_extension import OptionalExtension
 UNAME = os.uname()
 
 def uname_specific(name, value, alternative):
@@ -391,21 +390,21 @@ ext_modules = [
               sources = ['sage/graphs/matchpoly.pyx'],
               extra_compile_args = ['-std=c99']),
 
-    OptionalExtension("sage.graphs.mcqd",
-              ["sage/graphs/mcqd.pyx"],
-              language = "c++",
-              package = 'mcqd'),
-
-    OptionalExtension("sage.graphs.bliss",
-              ["sage/graphs/bliss.pyx"],
-              language = "c++",
-              libraries = ['bliss'],
-              package = 'bliss'),
-
-    OptionalExtension('sage.graphs.modular_decomposition',
-              sources = ['sage/graphs/modular_decomposition.pyx'],
-              libraries = ['modulardecomposition'],
-              package = 'modular_decomposition'),
+#    OptionalExtension("sage.graphs.mcqd",
+#              ["sage/graphs/mcqd.pyx"],
+#              language = "c++",
+#              package = 'mcqd'),
+
+#    OptionalExtension("sage.graphs.bliss",
+#              ["sage/graphs/bliss.pyx"],
+#              language = "c++",
+#              libraries = ['bliss'],
+#              package = 'bliss'),
+
+#    OptionalExtension('sage.graphs.modular_decomposition',
+#              sources = ['sage/graphs/modular_decomposition.pyx'],
+#              libraries = ['modulardecomposition'],
+#              package = 'modular_decomposition'),
 
     Extension('sage.graphs.planarity',
               sources = ['sage/graphs/planarity.pyx'],
@@ -424,10 +423,10 @@ ext_modules = [
     Extension('sage.graphs.graph_decompositions.cutwidth',
               sources = ['sage/graphs/graph_decompositions/cutwidth.pyx']),
 
-    OptionalExtension('sage.graphs.graph_decompositions.tdlib',
-              sources = ['sage/graphs/graph_decompositions/tdlib.pyx'],
-              language="c++",
-              package = 'tdlib'),
+#    OptionalExtension('sage.graphs.graph_decompositions.tdlib',
+#              sources = ['sage/graphs/graph_decompositions/tdlib.pyx'],
+#              language="c++",
+#              package = 'tdlib'),
 
     Extension('sage.graphs.spanning_tree',
               sources = ['sage/graphs/spanning_tree.pyx']),
@@ -514,17 +513,17 @@ ext_modules = [
     ##
     ################################
 
-    OptionalExtension('sage.libs.coxeter3.coxeter',
-              sources = ['sage/libs/coxeter3/coxeter.pyx'],
-              include_dirs = [os.path.join(SAGE_INC, 'coxeter')],
-              language="c++",
-              libraries = ['coxeter3'],
-              package = 'coxeter3'),
+#    OptionalExtension('sage.libs.coxeter3.coxeter',
+#              sources = ['sage/libs/coxeter3/coxeter.pyx'],
+#              include_dirs = [os.path.join(SAGE_INC, 'coxeter')],
+#              language="c++",
+#              libraries = ['coxeter3'],
+#              package = 'coxeter3'),
 
     Extension('sage.libs.ecl',
               sources = ["sage/libs/ecl.pyx"]),
 
-    OptionalExtension("sage.libs.fes",
+    Extension("sage.libs.fes",
              ["sage/libs/fes.pyx"],
              language = "c",
              libraries = ['fes'],
@@ -548,23 +547,23 @@ ext_modules = [
     Extension('sage.libs.gmp.pylong',
               sources = ['sage/libs/gmp/pylong.pyx']),
 
-    OptionalExtension('sage.libs.braiding',
-                      sources = ["sage/libs/braiding.pyx"],
-                      libraries = ["braiding"],
-                      package="libbraiding",
-                      language = 'c++'),
-
-
-    OptionalExtension('sage.libs.homfly',
-                      sources = ["sage/libs/homfly.pyx"],
-                      libraries = ["homfly", "gc"],
-                      package="libhomfly"),
-
-    OptionalExtension('sage.libs.sirocco',
-                      sources = ["sage/libs/sirocco.pyx"],
-                      libraries = ["sirocco", "mpfr", "gmp"],
-                      package="sirocco",
-                      language = 'c++'),
+#    OptionalExtension('sage.libs.braiding',
+#                      sources = ["sage/libs/braiding.pyx"],
+#                      libraries = ["braiding"],
+#                      package="libbraiding",
+#                      language = 'c++'),
+
+
+#    OptionalExtension('sage.libs.homfly',
+#                      sources = ["sage/libs/homfly.pyx"],
+#                      libraries = ["homfly", "gc"],
+#                      package="libhomfly"),
+
+#    OptionalExtension('sage.libs.sirocco',
+#                      sources = ["sage/libs/sirocco.pyx"],
+#                      libraries = ["sirocco", "mpfr", "gmp"],
+#                      package="sirocco",
+#                      language = 'c++'),
 
     Extension('*', ['sage/libs/linbox/*.pyx']),
 
@@ -901,10 +900,10 @@ ext_modules = [
     Extension('sage.matrix.matrix_window',
               sources = ['sage/matrix/matrix_window.pyx']),
 
-    OptionalExtension("sage.matrix.matrix_gfpn_dense",
-              sources = ['sage/matrix/matrix_gfpn_dense.pyx'],
-              libraries = ['mtx'],
-              package = 'meataxe'),
+#    OptionalExtension("sage.matrix.matrix_gfpn_dense",
+#              sources = ['sage/matrix/matrix_gfpn_dense.pyx'],
+#              libraries = ['mtx'],
+#              package = 'meataxe'),
 
     Extension('sage.matrix.misc',
               sources = ['sage/matrix/misc.pyx'],
@@ -1089,19 +1088,19 @@ ext_modules = [
     Extension("sage.numerical.backends.interactivelp_backend",
               ["sage/numerical/backends/interactivelp_backend.pyx"]),
 
-    OptionalExtension("sage.numerical.backends.gurobi_backend",
-              ["sage/numerical/backends/gurobi_backend.pyx"],
-              libraries = ["stdc++", "gurobi"],
-              condition = os.path.isfile(SAGE_INC + "/gurobi_c.h") and
-                  os.path.isfile(SAGE_LOCAL + "/lib/libgurobi.so")),
-
-    OptionalExtension("sage.numerical.backends.cplex_backend",
-              ["sage/numerical/backends/cplex_backend.pyx"],
-              libraries = ["stdc++", "cplex"],
-              condition = os.path.isfile(SAGE_INC + "/cplex.h") and
-                  os.path.isfile(SAGE_LOCAL + "/lib/libcplex.a")),
+#    OptionalExtension("sage.numerical.backends.gurobi_backend",
+#              ["sage/numerical/backends/gurobi_backend.pyx"],
+#              libraries = ["stdc++", "gurobi"],
+#              condition = os.path.isfile(SAGE_INC + "/gurobi_c.h") and
+#                  os.path.isfile(SAGE_LOCAL + "/lib/libgurobi.so")),
+
+#    OptionalExtension("sage.numerical.backends.cplex_backend",
+#              ["sage/numerical/backends/cplex_backend.pyx"],
+#              libraries = ["stdc++", "cplex"],
+#              condition = os.path.isfile(SAGE_INC + "/cplex.h") and
+#                  os.path.isfile(SAGE_LOCAL + "/lib/libcplex.a")),
 
-    OptionalExtension("sage.numerical.backends.coin_backend",
+    Extension("sage.numerical.backends.coin_backend",
               ["sage/numerical/backends/coin_backend.pyx"],
               language = 'c++',
               libraries = ["Cbc", "CbcSolver", "Cgl", "Clp", "CoinUtils",