whizard: add gosam variant (#43595)

* whizard: add gosam variant

* adress comments, fix compiler wrapper issue

var/spack/repos/builtin/packages/gosam-contrib/package.py

@@ -17,6 +17,9 @@ class GosamContrib(AutotoolsPackage):
     version("2.0", sha256="c05beceea74324eb51c1049773095e2cb0c09c8c909093ee913d8b0da659048d")
     version("1.0", sha256="a29d4232d9190710246abc2ed97fdcd8790ce83580f56a360f3456b0377c40ec")
 
+    # whizard checks for .la files ( but does not use them )
+    install_libtool_archives = True
+
     variant(
         "libs",
         default="shared,static",
@@ -26,6 +29,11 @@ class GosamContrib(AutotoolsPackage):
     )
     variant("pic", default=False, description="Build position-independent code")
 
+    def patch(self):
+        # remove spack compiler wrapper path
+        mf = FileFilter("gosam.conf.in")
+        mf.filter("^fc.bin=.*", "fc.bin=" + self.compiler.fc)
+
     def flag_handler(self, name, flags):
         if name in ["cflags", "cxxflags", "cppflags"]:
             if "+pic" in self.spec:

var/spack/repos/builtin/packages/qgraf/package.py

@@ -20,4 +20,5 @@ class Qgraf(Package):
     def install(self, spec, prefix):
         fortran = Executable(spack_fc)
         fortran("qgraf-{0}.f".format(self.spec.version), "-o", "qgraf")
-        install_tree(".", prefix)
+        mkdirp(prefix.bin)
+        install("./qgraf", prefix.bin)

var/spack/repos/builtin/packages/whizard/package.py

@@ -54,6 +54,7 @@ class Whizard(AutotoolsPackage):
 
     variant("pythia8", default=True, description="builds with pythia8")
     variant("fastjet", default=False, description="builds with fastjet")
+    variant("gosam", default=False, description="builds with gosam")
     variant("lcio", default=False, description="builds with lcio")
     variant("lhapdf", default=False, description="builds with fastjet")
     variant("openmp", default=False, description="builds with openmp")
@@ -70,6 +71,10 @@ class Whizard(AutotoolsPackage):
     depends_on("pythia8@:8.309", when="@:3.1.3+pythia8")
     depends_on("lhapdf", when="+lhapdf")
     depends_on("fastjet", when="+fastjet")
+    depends_on("py-gosam", when="+gosam")
+    depends_on("gosam-contrib", when="+gosam")
+    depends_on("qgraf", when="+gosam")
+
     depends_on(
         "openloops@2.0.0: +compile_extra num_jobs=1 " "processes=eett,eevvjj,ppllj,tbw",
         when="+openloops",
@@ -143,10 +148,10 @@ def configure_args(self):
             # todo: hoppet
             # todo: recola
             # todo: looptools
-            # todo: gosam
             # todo: pythia6
         ]
         args.extend(self.enable_or_disable("fastjet"))
+        args.extend(self.enable_or_disable("gosam"))
         args.extend(self.enable_or_disable("pythia8"))
         args.extend(self.enable_or_disable("lcio"))
         args.extend(self.enable_or_disable("lhapdf"))