diff --git a/var/spack/repos/builtin/packages/collier/package.py b/var/spack/repos/builtin/packages/collier/package.py
new file mode 100644
index 0000000000..e1d6245b35
--- /dev/null
+++ b/var/spack/repos/builtin/packages/collier/package.py
@@ -0,0 +1,30 @@
+# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class Collier(CMakePackage):
+    """COLLIER: A Complex One-Loop LIbrary with Extended Regularizations """
+
+    homepage = "https://collier.hepforge.org"
+    url      = "https://collier.hepforge.org/downloads/?f=collier-1.2.5.tar.gz"
+
+    version('1.2.5', sha256='3ec58a975ff0c3b1ca870bc38973476c923ff78fd3dd5850e296037852b94a8b')
+    version('1.2.4', sha256='92ae8f61461b232fbd47a6d8e832e1a726d504f9390b7edc49a68fceedff8857')
+    version('1.2.3', sha256='e6f72df223654df59113b0067a4bebe9f8c20227bb81371d3193e1557bdf56fb')
+    version('1.2.2', sha256='140029e36635565262719124dcda2fa7d66fd468442cb268f6da16d4cbbab29a')
+    version('1.2.1', sha256='7f5bc81a00de071e2451ba3e11cad726df0ae18bd973dba4aeba165897d48c2d')
+    version('1.2.0', sha256='e5b2def953d7f9f4f2cacd4616aa65c77e2b9adf7eed2ca3531b993e529fbafd')
+    version('1.1',   sha256='80fd54e2c30029d3d7d646738ae9469ad3a6f5ea7aa1179b951030df048e36bc')
+    version('1.0',   sha256='54f40c1ed07a6829230af400abfe48791e74e56eac2709c0947cec3410a4473d')
+
+    @property
+    def parallel(self):
+        return not self.spec.satisfies('@:1.2.4')
+
+    def cmake_args(self):
+        args = ['-Dstatic=ON']
+        return args
diff --git a/var/spack/repos/builtin/packages/gosam-contrib/package.py b/var/spack/repos/builtin/packages/gosam-contrib/package.py
new file mode 100644
index 0000000000..ad45f5b03e
--- /dev/null
+++ b/var/spack/repos/builtin/packages/gosam-contrib/package.py
@@ -0,0 +1,20 @@
+# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class GosamContrib(AutotoolsPackage):
+    """Additional libraries for GoSam MC generator"""
+
+    homepage = "https://gosam.hepforge.org"
+    url      = "https://gosam.hepforge.org/downloads/?f=gosam-contrib-2.0.tar.gz"
+
+    version('2.0', sha256='c05beceea74324eb51c1049773095e2cb0c09c8c909093ee913d8b0da659048d')
+    version('1.0', sha256='a29d4232d9190710246abc2ed97fdcd8790ce83580f56a360f3456b0377c40ec')
+
+    def configure_args(self):
+        args = ["FFLAGS=-std=legacy"]
+        return args
diff --git a/var/spack/repos/builtin/packages/madgraph5amc/madgraph5amc-2.7.3.atlas.patch b/var/spack/repos/builtin/packages/madgraph5amc/madgraph5amc-2.7.3.atlas.patch
new file mode 100644
index 0000000000..c2b62eaa46
--- /dev/null
+++ b/var/spack/repos/builtin/packages/madgraph5amc/madgraph5amc-2.7.3.atlas.patch
@@ -0,0 +1,1025 @@
+--- models/sm/restrict_ckm.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/sm/restrict_ckm.dat	2016-05-03 22:54:19.000000001 +0200
+@@ -6,9 +6,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -16,30 +16,30 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 4.700000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+-   15 1.777000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   15 1.776820e+00 # MTA 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03 
+ 
+ ###################################
+ ## INFORMATION FOR WOLFENSTEIN
+ ###################################
+ Block Wolfenstein 
+-    1 2.253000e-01 # lamWS 
+-    2 8.080000e-01 # AWS 
+-    3 1.320000e-01 # rhoWS 
+-    4 3.410000e-01 # etaWS 
++    1 2.257000e-01 # lamWS 
++    2 8.140000e-01 # AWS 
++    3 1.350000e-01 # rhoWS 
++    4 3.490000e-01 # etaWS 
+ 
+ ###################################
+ ## INFORMATION FOR YUKAWA
+@@ -47,7 +47,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 4.700000e+00 # ymb
+-    6 1.730000e+02 # ymt
++    6 1.725000e+02 # ymt
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 1.777000e+00 # ymtau 
+--- models/sm/restrict_c_mass.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/sm/restrict_c_mass.dat	2016-05-03 22:54:19.000000001 +0200
+@@ -6,9 +6,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -16,20 +16,20 @@
+ Block MASS 
+     4 1.550000e+00 # MC 
+     5 4.700000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+-   15 1.777000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   15 1.776820e+00 # MTA 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03
+ 
+ ###################################
+@@ -47,7 +47,7 @@
+ Block YUKAWA 
+     4 1.550000e+00 # ymc 
+     5 4.700000e+00 # ymb
+-    6 1.730000e+02 # ymt
++    6 1.725000e+02 # ymt
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 1.777000e+00 # ymtau 
+--- models/sm/restrict_default.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/sm/restrict_default.dat	2016-05-03 22:54:19.000000001 +0200
+@@ -6,9 +6,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -16,20 +16,20 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 4.700000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+-   15 1.777000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   15 1.776820e+00 # MTA 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03
+ 
+ ###################################
+@@ -47,7 +47,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 4.700000e+00 # ymb
+-    6 1.730000e+02 # ymt
++    6 1.725000e+02 # ymt
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 1.777000e+00 # ymtau 
+--- models/sm/restrict_lepton_masses.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/sm/restrict_lepton_masses.dat	2016-05-03 22:54:19.000000001 +0200
+@@ -6,9 +6,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -16,20 +16,20 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 4.700000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 5.110000e-04 # Me 
+    13 1.056600e-01 # MM 
+-   15 1.777000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   15 1.776820e+00 # MTA 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 2.270000e-12
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03 
+ 
+ ###################################
+@@ -47,7 +47,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 4.700000e+00 # ymb
+-    6 1.730000e+02 # ymt
++    6 1.725000e+02 # ymt
+    11 5.110000e-04 # yme
+    13 1.056600e-01 # ymm
+    15 1.777000e+00 # ymtau 
+--- models/sm/restrict_no_b_mass.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/sm/restrict_no_b_mass.dat	2016-05-03 22:54:19.000000001 +0200
+@@ -6,9 +6,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -16,20 +16,20 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 0.000000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+-   15 1.777000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   15 1.776820e+00 # MTA 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03
+ 
+ ###################################
+@@ -47,7 +47,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 0.000000e+00 # ymb 
+-    6 1.730000e+02 # ymt
++    6 1.725000e+02 # ymt
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 1.777000e+00 # ymtau 
+--- models/sm/restrict_no_masses.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/sm/restrict_no_masses.dat	2016-05-03 22:54:19.000000001 +0200
+@@ -6,9 +6,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -16,20 +16,20 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 0.000000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+    15 0.000000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.320000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03
+ 
+ ###################################
+@@ -47,7 +47,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 0.000000e+00 # ymb 
+-    6 1.730000e+02 # ymt
++    6 1.725000e+02 # ymt
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 0.000000e+00 # ymtau 
+--- models/sm/restrict_no_tau_mass.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/sm/restrict_no_tau_mass.dat	2016-05-03 22:54:19.000000001 +0200
+@@ -6,9 +6,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -16,20 +16,20 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 4.700000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+    15 0.000000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03
+ 
+ ###################################
+@@ -47,7 +47,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 4.700000e+00 # ymb
+-    6 1.730000e+02 # ymt
++    6 1.725000e+02 # ymt
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 0.000000e+00 # ymtau 
+--- models/sm/restrict_no_widths.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/sm/restrict_no_widths.dat	2016-05-03 22:54:19.000000001 +0200
+@@ -16,7 +16,7 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 4.700000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+    15 1.777000e+00 # MTA 
+--- models/sm/restrict_zeromass_ckm.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/sm/restrict_zeromass_ckm.dat	2016-05-03 22:54:20.000000001 +0200
+@@ -6,9 +6,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -16,30 +16,30 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 0.000000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+    15 0.000000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03
+ 
+ ###################################
+ ## INFORMATION FOR WOLFENSTEIN
+ ###################################
+ Block Wolfenstein 
+-    1 2.253000e-01 # lamWS 
+-    2 8.080000e-01 # AWS 
+-    3 1.320000e-01 # rhoWS 
+-    4 3.410000e-01 # etaWS 
++    1 2.257000e-01 # lamWS 
++    2 8.140000e-01 # AWS 
++    3 1.350000e-01 # rhoWS 
++    4 3.490000e-01 # etaWS 
+ 
+ ###################################
+ ## INFORMATION FOR YUKAWA
+@@ -47,7 +47,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 0.000000e+00 # ymb 
+-    6 1.730000e+02 # ymt
++    6 1.725000e+02 # ymt
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 0.000000e+00 # ymtau 
+--- models/loop_sm/restrict_ckm.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/loop_sm/restrict_ckm.dat	2016-05-03 22:54:29.000000001 +0200
+@@ -12,9 +12,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -22,30 +22,30 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 4.700000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+-   15 1.777000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   15 1.776820e+00 # MTA 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03 
+ 
+ ###################################
+ ## INFORMATION FOR WOLFENSTEIN
+ ###################################
+ Block Wolfenstein 
+-    1 2.253000e-01 # lamWS 
+-    2 8.080000e-01 # AWS 
+-    3 1.320000e-01 # rhoWS 
+-    4 3.410000e-01 # etaWS 
++    1 2.257000e-01 # lamWS 
++    2 8.140000e-01 # AWS 
++    3 1.350000e-01 # rhoWS 
++    4 3.490000e-01 # etaWS 
+ 
+ ###################################
+ ## INFORMATION FOR YUKAWA
+@@ -53,7 +53,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 4.700000e+00 # ymb 
+-    6 1.730000e+02 # ymt 
++    6 1.725000e+02 # ymt 
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 1.777000e+00 # ymtau 
+--- models/loop_sm/restrict_c_mass.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/loop_sm/restrict_c_mass.dat	2016-05-03 22:54:29.000000001 +0200
+@@ -12,9 +12,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -22,20 +22,20 @@
+ Block MASS 
+     4 1.550000e+00 # MC 
+     5 4.700000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+-   15 1.777000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   15 1.776820e+00 # MTA 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00 
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03 
+ 
+ ###################################
+@@ -53,7 +53,7 @@
+ Block YUKAWA 
+     4 1.550000e+00 # ymc 
+     5 4.700000e+00 # ymb 
+-    6 1.730000e+02 # ymt 
++    6 1.725000e+02 # ymt 
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 1.777000e+00 # ymtau 
+--- models/loop_sm/restrict_default.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/loop_sm/restrict_default.dat	2016-05-03 22:54:29.000000001 +0200
+@@ -12,9 +12,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -22,20 +22,20 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 4.700000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+-   15 1.777000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   15 1.776820e+00 # MTA 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03
+ 
+ ###################################
+@@ -53,7 +53,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 4.700000e+00 # ymb 
+-    6 1.730000e+02 # ymt 
++    6 1.725000e+02 # ymt 
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 1.777000e+00 # ymtau 
+--- models/loop_sm/restrict_lepton_masses.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/loop_sm/restrict_lepton_masses.dat	2016-05-03 22:54:29.000000001 +0200
+@@ -12,9 +12,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -22,20 +22,20 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 4.700000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 5.110000e-04 # Me 
+    13 1.056600e-01 # MM 
+-   15 1.777000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   15 1.776820e+00 # MTA 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 2.270000e-12
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03 
+ 
+ ###################################
+@@ -53,7 +53,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 4.700000e+00 # ymb
+-    6 1.730000e+02 # ymt
++    6 1.725000e+02 # ymt
+    11 5.110000e-04 # yme
+    13 1.056600e-01 # ymm
+    15 1.777000e+00 # ymtau 
+--- models/loop_sm/restrict_no_b_mass.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/loop_sm/restrict_no_b_mass.dat	2016-05-03 22:54:29.000000001 +0200
+@@ -12,9 +12,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -22,20 +22,20 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 0.000000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+-   15 1.777000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   15 1.776820e+00 # MTA 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03 
+ 
+ ###################################
+@@ -53,7 +53,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 0.000000e+00 # ymb 
+-    6 1.730000e+02 # ymt 
++    6 1.725000e+02 # ymt 
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 1.777000e+00 # ymtau 
+--- models/loop_sm/restrict_no_masses.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/loop_sm/restrict_no_masses.dat	2016-05-03 22:54:29.000000001 +0200
+@@ -12,9 +12,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -22,20 +22,20 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 0.000000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+    15 0.000000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03 
+ 
+ ###################################
+@@ -53,7 +53,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 0.000000e+00 # ymb 
+-    6 1.730000e+02 # ymt 
++    6 1.725000e+02 # ymt 
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 0.000000e+00 # ymtau 
+--- models/loop_sm/restrict_no_tau_mass.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/loop_sm/restrict_no_tau_mass.dat	2016-05-03 22:54:29.000000001 +0200
+@@ -12,9 +12,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -22,20 +22,20 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 4.700000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+    15 0.000000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03 
+ 
+ ###################################
+@@ -53,7 +53,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 4.700000e+00 # ymb 
+-    6 1.730000e+02 # ymt 
++    6 1.725000e+02 # ymt 
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 0.000000e+00 # ymtau 
+--- models/loop_sm/restrict_no_widths.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/loop_sm/restrict_no_widths.dat	2016-05-03 22:54:29.000000001 +0200
+@@ -22,7 +22,7 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 4.700000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+    15 1.777000e+00 # MTA 
+@@ -53,7 +53,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 4.700000e+00 # ymb 
+-    6 1.730000e+02 # ymt 
++    6 1.725000e+02 # ymt 
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 1.777000e+00 # ymtau 
+--- models/loop_sm/restrict_parallel_test.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/loop_sm/restrict_parallel_test.dat	2016-05-03 22:54:29.000000001 +0200
+@@ -22,7 +22,7 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 4.620000e+00 # MB 
+-    6 1.743000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+    15 1.777000e+00 # MTA 
+@@ -53,7 +53,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 4.6200000e+00 # ymb 
+-    6 1.743000e+02 # ymt 
++    6 1.725000e+02 # ymt 
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 1.777000e+00 # ymtau 
+--- models/loop_sm/restrict_test.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/loop_sm/restrict_test.dat	2016-05-03 22:54:29.000000001 +0200
+@@ -22,7 +22,7 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 4.700000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+    15 1.777000e+00 # MTA 
+--- models/loop_sm/restrict_zeromass_ckm.dat	2015-10-26 02:18:52.000000001 +0100
++++ models/loop_sm/restrict_zeromass_ckm.dat	2016-05-03 22:54:29.000000001 +0200
+@@ -12,9 +12,9 @@
+ ## INFORMATION FOR SMINPUTS
+ ###################################
+ Block SMINPUTS 
+-    1 1.325070e+02 # aEWM1 
+-    2 1.166390e-05 # Gf 
+-    3 1.180000e-01 # aS 
++    1 1.32348905e+02 # aEWM1 
++    2 1.16637000e-05 # Gf 
++    3 1.18400000e-01 # aS 
+ 
+ ###################################
+ ## INFORMATION FOR MASS
+@@ -22,30 +22,30 @@
+ Block MASS 
+     4 0.000000e+00 # MC 
+     5 0.000000e+00 # MB 
+-    6 1.730000e+02 # MT 
++    6 1.725000e+02 # MT 
+    11 0.000000e+00 # Me 
+    13 0.000000e+00 # MM 
+    15 0.000000e+00 # MTA 
+-   23 9.118800e+01 # MZ 
++   23 9.118760e+01 # MZ 
+    25 1.250000e+02 # MH 
+ 
+ ###################################
+ ## INFORMATION FOR DECAY
+ ###################################
+-DECAY   6 1.491500E+00
++DECAY   6 1.32000000E+00
+ DECAY  15 0.000000e+00
+-DECAY  23 2.441404e+00 
+-DECAY  24 2.047600e+00 
++DECAY  23 2.49520000e+00  
++DECAY  24 2.085000e+00 
+ DECAY  25 6.38233934e-03 
+ 
+ ###################################
+ ## INFORMATION FOR WOLFENSTEIN
+ ###################################
+ Block Wolfenstein 
+-    1 2.253000e-01 # lamWS 
+-    2 8.080000e-01 # AWS 
+-    3 1.320000e-01 # rhoWS 
+-    4 3.410000e-01 # etaWS 
++    1 2.257000e-01 # lamWS 
++    2 8.140000e-01 # AWS 
++    3 1.350000e-01 # rhoWS 
++    4 3.490000e-01 # etaWS 
+ 
+ ###################################
+ ## INFORMATION FOR YUKAWA
+@@ -53,7 +53,7 @@
+ Block YUKAWA 
+     4 0.000000e+00 # ymc 
+     5 0.000000e+00 # ymb 
+-    6 1.730000e+02 # ymt 
++    6 1.725000e+02 # ymt 
+    11 0.000000e+00 # yme 
+    13 0.000000e+00 # ymm 
+    15 0.000000e+00 # ymtau 
+--- bin/.compile.py.orig	2017-02-23 09:30:11.498513439 +0100
++++ bin/.compile.py	2017-02-23 09:30:45.660867637 +0100
+@@ -59,7 +59,8 @@
+             self.make_stdHep()
+             self.make_CutTools()
+             self.make_IREGI()
+-            self.install_package(ext_programs)
++            if ext_programs:
++                self.install_package(ext_programs)
+             self.test_output_LO()
+             self.test_output_NLO()
+             self.precompilation(debug=True)
+--- madgraph/interface/loop_interface.py.orig	2018-05-01 10:19:36.391921213 +0300
++++ madgraph/interface/loop_interface.py	2018-05-01 10:20:08.019974345 +0300
+@@ -23,7 +23,7 @@
+ import re
+ 
+ import madgraph
+-from madgraph import MG4DIR, MG5DIR, MadGraph5Error
++from madgraph import MG4DIR, MG5DIR, MadGraph5Error, ReadWrite
+ import madgraph.interface.madgraph_interface as mg_interface
+ import madgraph.interface.extended_cmd as cmd
+ import madgraph.interface.launch_ext_program as launch_ext
+@@ -503,6 +503,9 @@
+         if (opt['ninja'] is None) or (os.path.isfile(pjoin(MG5DIR, opt['ninja'],'libninja.a'))): 
+             return
+         
++        if not ReadWrite:
++            return
++
+         logger.info("First output using loop matrix-elements has been detected. Now asking for loop reduction:", '$MG:BOLD')
+         to_install = self.ask('install', '0',  ask_class=AskLoopInstaller, timeout=300, 
+                               path_msg=' ')
+
+--- vendor/CutTools/makefile.orig	2018-06-18 13:24:17.164637074 +0200
++++ vendor/CutTools/makefile	2018-06-18 13:24:27.756740547 +0200
+@@ -9,7 +9,7 @@
+ ifeq ($(wildcard ../make_opts), ../make_opts)
+   include ../make_opts
+ else
+-  FFLAGS = 
++  FFLAGS = -std=legacy
+   FC=gfortran
+ endif
+ 
+--- vendor/IREGI/src/makefile_ML5_lib.orig	2018-07-09 13:33:48.546490615 +0200
++++ vendor/IREGI/src/makefile_ML5_lib	2018-07-09 13:33:57.238573607 +0200
+@@ -5,7 +5,7 @@
+ FFDIR=$(qcdlooppath)/ff
+ onelooppath=$(PWD)/oneloop
+ #FFLAGS=-O -g -ggdb -fno-automatic -fbounds-check -I$(onelooppath) # -fbounds-check is very useful in checking mermory error,-g is for debuging,-ggdb is for debuging special in gdb
+-FFLAGS=-O -g -fPIC -I$(onelooppath)
++FFLAGS=-O -g -fPIC -I$(onelooppath) -std=legacy
+ obj= global.o funlib.o linear_algebra.o kinematics.o matrices.o matrix_base.o cmatrix_base.o mis_warp.o special_fun.o pave_reduce.o cpave_reduce.o si_reduce.o csi_reduce.o ti_reduce.o cti_reduce.o gti_reduce.o binary_tree.o IREGI4ML5_interface.o avh_olo_foriregi.o
+ olomod= avh_olo_foriregi.mod avh_olo_foriregi_dp_box.mod    avh_olo_foriregi_dp_olog.mod   avh_olo_foriregi_units.mod \
+         avh_olo_foriregi_dp.mod        avh_olo_foriregi_dp_boxc.mod   avh_olo_foriregi_dp_prec.mod   avh_olo_foriregi_version.mod \
+--- madgraph/various/misc.py.orig      2018-04-29 15:59:44.000000000 +0200
++++ madgraph/various/misc.py   2018-07-18 10:11:06.000000000 +0200
+@@ -469,6 +469,8 @@
+     try:
+         if nb_core > 1:
+             cmd.append('-j%s' % nb_core)
++        if nb_core < 0:
++            cmd.append('-j1')
+         cmd += arg
+         p = subprocess.Popen(cmd, stdout=subprocess.PIPE, 
+                              stderr=subprocess.STDOUT, cwd=cwd, **opt)
+
+--- bin/.compile.py.orig	2018-07-18 10:56:33.000000000 +0200
++++ bin/.compile.py	2018-07-18 10:42:56.000000000 +0200
+@@ -168,7 +168,7 @@
+             text = text.replace(base,compiler)
+         open(path, 'w').writelines(text)
+ 
+-        misc.compile(cwd = os.path.join(MG5DIR, 'vendor', 'StdHEP'))
++        misc.compile(cwd = os.path.join(MG5DIR, 'vendor', 'StdHEP'), nb_core=-1)
+ 
+     @staticmethod
+     def make_CutTools():
+@@ -190,7 +190,7 @@
+             text = text.replace(base,compiler)
+         open(path, 'w').writelines(text)
+ 
+-        misc.compile(cwd = os.path.join(MG5DIR, 'vendor', 'CutTools'))
++        misc.compile(cwd = os.path.join(MG5DIR, 'vendor', 'CutTools'), nb_core=-1)
+ 
+     @staticmethod
+     def make_IREGI():
+@@ -274,7 +274,7 @@
+                     open(name,'w').write('\n'.join(lines))
+                     mod = False
+ 
+-        misc.compile(cwd = os.path.join(iregi_path,'src'))        
++        misc.compile(cwd = os.path.join(iregi_path,'src'), nb_core=-1)        
+ 
+     def install_package(self, programs=[]):
+         print "installing external package"
diff --git a/var/spack/repos/builtin/packages/madgraph5amc/madgraph5amc-2.7.3.patch b/var/spack/repos/builtin/packages/madgraph5amc/madgraph5amc-2.7.3.patch
new file mode 100644
index 0000000000..38b872352f
--- /dev/null
+++ b/var/spack/repos/builtin/packages/madgraph5amc/madgraph5amc-2.7.3.patch
@@ -0,0 +1,23 @@
+--- vendor/CutTools/makefile.orig	2018-06-18 13:24:17.164637074 +0200
++++ vendor/CutTools/makefile	2018-06-18 13:24:27.756740547 +0200
+@@ -9,7 +9,7 @@
+ ifeq ($(wildcard ../make_opts), ../make_opts)
+   include ../make_opts
+ else
+-  FFLAGS = 
++  FFLAGS = -std=legacy
+   FC=gfortran
+ endif
+ 
+--- vendor/IREGI/src/makefile_ML5_lib.orig	2018-07-09 13:33:48.546490615 +0200
++++ vendor/IREGI/src/makefile_ML5_lib	2018-07-09 13:33:57.238573607 +0200
+@@ -5,7 +5,7 @@
+ FFDIR=$(qcdlooppath)/ff
+ onelooppath=$(PWD)/oneloop
+ #FFLAGS=-O -g -ggdb -fno-automatic -fbounds-check -I$(onelooppath) # -fbounds-check is very useful in checking mermory error,-g is for debuging,-ggdb is for debuging special in gdb
+-FFLAGS=-O -g -fPIC -I$(onelooppath)
++FFLAGS=-O -g -fPIC -I$(onelooppath) -std=legacy
+ obj= global.o funlib.o linear_algebra.o kinematics.o matrices.o matrix_base.o cmatrix_base.o mis_warp.o special_fun.o pave_reduce.o cpave_reduce.o si_reduce.o csi_reduce.o ti_reduce.o cti_reduce.o gti_reduce.o binary_tree.o IREGI4ML5_interface.o avh_olo_foriregi.o
+ olomod= avh_olo_foriregi.mod avh_olo_foriregi_dp_box.mod    avh_olo_foriregi_dp_olog.mod   avh_olo_foriregi_units.mod \
+         avh_olo_foriregi_dp.mod        avh_olo_foriregi_dp_boxc.mod   avh_olo_foriregi_dp_prec.mod   avh_olo_foriregi_version.mod \
+
diff --git a/var/spack/repos/builtin/packages/madgraph5amc/package.py b/var/spack/repos/builtin/packages/madgraph5amc/package.py
new file mode 100644
index 0000000000..3abe3dce1f
--- /dev/null
+++ b/var/spack/repos/builtin/packages/madgraph5amc/package.py
@@ -0,0 +1,111 @@
+# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+import os
+
+
+class Madgraph5amc(Package):
+    """MadGraph5_aMC@NLO is a framework that aims at providing
+       all the elements necessary for SM and BSM phenomenology,
+       such as the computations of cross sections, the generation
+       of hard events and their matching with event generators,
+       and the use of a variety of tools relevant to
+       event manipulation and analysis. """
+
+    homepage = "https://launchpad.net/mg5amcnlo"
+    url      = "https://launchpad.net/mg5amcnlo/2.0/2.7.x/+download/MG5_aMC_v2.7.3.tar.gz"
+
+    version('2.7.3.py3', sha256='400c26f9b15b07baaad9bd62091ceea785c2d3a59618fdc27cad213816bc7225')
+    version('2.7.3.py2', sha256='0b665356f4d9359e6e382e0f408dc11db594734567c6b2f0ec0e0697f2dbe099',
+            url="https://launchpad.net/mg5amcnlo/2.0/2.7.x/+download/MG5_aMC_v2.7.3.tar.gz")
+
+    variant('atlas', default=False, description='Apply changes requested by ' + 
+            "the ATLAS experimenent on LHC")
+    variant('ninja', default=False, description='Use external installation' +
+            " of Ninja")
+    variant('collier', default=False, description='Use external installation' +
+            ' of Collier')
+
+    depends_on('syscalc')
+    depends_on('gosam-contrib', when='+ninja')
+    depends_on('collier', when='+collier')
+    depends_on('lhapdf')
+    depends_on('fastjet')
+    depends_on('py-six', when='@2.7.3.py3', type=('build', 'run'))
+
+    depends_on('python@:2.7.999', when='@2.7.3.py2', type=('build', 'run'))
+    conflicts('%gcc@10:', when='@2.7.3')
+
+    depends_on('python@3:', when='@2.7.3.py3', type=('build', 'run'))
+
+    patch('madgraph5amc-2.7.3.patch', level=0, when='@2.7.3.py2~atlas')
+    patch('madgraph5amc-2.7.3.atlas.patch', level=0, when='@2.7.3.py2+atlas')
+    patch('madgraph5amc-2.7.3.patch', level=0, when='@2.7.3.py3~atlas')
+    patch('madgraph5amc-2.7.3.atlas.patch', level=0, when='@2.7.3.py3+atlas')
+
+    phases = ['edit', 'build', 'install']
+
+    def edit(self, spec, prefix):
+        def set_parameter(name, value):
+            config_files.filter('^#?[ ]*' + name + '[ ]*=.*$',
+                                name + ' = ' + value,
+                                ignore_absent=True)
+
+        config_files = FileFilter(join_path("input",
+                                            ".mg5_configuration_default.txt"),
+                                  join_path("input", "mg5_configuration.txt"))
+
+        set_parameter('syscalc_path', spec['syscalc'].prefix.bin)
+
+        if '+ninja' in spec:
+            set_parameter('ninja', spec['gosam-contrib'].prefix)
+
+        if '+collier' in spec:
+            set_parameter('collier', spec['collier'].prefix)
+
+        set_parameter('output_dependencies', 'internal')
+        set_parameter('lhapdf', join_path(spec['lhapdf'].prefix.bin,
+                      'lhapdf-config'))
+        set_parameter('fastjet', join_path(spec['fastjet'].prefix.bin,
+                                           'fastjet-config'))
+
+        set_parameter('automatic_html_opening', 'False')
+
+    def build(self, spec, prefix):
+        with working_dir(join_path('vendor', 'CutTools')):
+            make(parallel=False)
+
+        with working_dir(join_path('vendor', 'StdHEP')):
+            make(parallel=False)
+
+        if '+atlas' in spec:
+            if os.path.exists(join_path('bin', 'compile.py')):
+                compile_py = Executable(join_path('bin', 'compile.py'))
+            else:
+                compile_py = Executable(join_path('bin', '.compile.py'))
+
+            compile_py()
+
+    def install(self, spec, prefix):
+        def installdir(dirname):
+            install_tree(dirname, join_path(prefix, dirname))
+
+        def installfile(filename):
+            install(filename, join_path(prefix, filename))
+
+        for p in os.listdir(self.stage.source_path):
+            if os.path.isdir(p):
+                installdir(p)
+            else:
+                if p != 'doc.tgz':
+                    installfile(p)
+                else:
+                    mkdirp(prefix.share)
+                    install(p, join_path(prefix.share, p))
+
+        install(join_path('Template', 'LO', 'Source', '.make_opts'),
+                join_path(prefix, 'Template', 'LO',
+                          'Source', 'make_opts'))
diff --git a/var/spack/repos/builtin/packages/syscalc/package.py b/var/spack/repos/builtin/packages/syscalc/package.py
new file mode 100644
index 0000000000..8bbb3dfeda
--- /dev/null
+++ b/var/spack/repos/builtin/packages/syscalc/package.py
@@ -0,0 +1,29 @@
+# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class Syscalc(MakefilePackage):
+    """ A tool to derive theoretical systematic uncertainties"""
+
+    homepage = "https://cp3.irmp.ucl.ac.be/projects/madgraph/wiki/SysCalc"
+    url      = "http://madgraph.phys.ucl.ac.be/Downloads/SysCalc_V1.1.7.tar.gz"
+
+    version('1.1.7', sha256='d33219a525a54733bdfd02d8314288bdecd977fb1e97ddeaf13bf470bbbdd386')
+
+    depends_on('lhapdf@6:')
+
+    def url_for_version(self, version):
+        url = self.url.rsplit('/', 1)[0]
+        url += '/SysCalc_V{0}.tar.gz'
+
+        url = url.format(version)
+        return url
+
+    def install(self, spec, prefix):
+        mkdirp(prefix.bin)
+        install('sys_calc', prefix.bin)
+        install_tree('include', prefix.include)