py-gosam: use legacy setup.py invocation (fixes #29260) (#29264)

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

@@ -6,7 +6,7 @@
 from spack import *
 
 
-class PyGosam(PythonPackage):
+class PyGosam(Package):
     """The package GoSam allows for the automated calculation of
        one-loop amplitudes for multi-particle processes in renormalizable
        quantum field theories."""
@@ -16,7 +16,10 @@ class PyGosam(PythonPackage):
 
     tags = ['hep']
 
-    version('2.1.1', tag='2.1.1', commit='4b98559212dfcb71f9d983a3a605e4693ac7f83f')
+    extends('python')
+
+    version('2.1.1', url="https://github.com/gudrunhe/gosam/releases/download/2.1.1/gosam-2.1.1-4b98559.tar.gz",
+            sha256="4a2b9160d51e3532025b9579a4d17d0e0f8a755b8481aeb8271c1f58eb97ab01")
     version('2.0.4', sha256='faf621c70f66d9dffc16ac5cce66258067f39f686d722a4867eeb759fcde4f44',
             url='https://gosam.hepforge.org/downloads/?f=gosam-2.0.4-6d9f1cba.tar.gz')
     version('2.0.3', tag='v2.0.3', commit='4146ab23a06b7c57c10fb36df60758d34aa58387')
@@ -26,9 +29,15 @@ class PyGosam(PythonPackage):
     depends_on('gosam-contrib', type='link')
     depends_on('python@2.7.0:2.7', type=('build', 'run'), when='@:2.0.4')
     depends_on('python@3:', type=('build', 'run'), when='@2.1.1:')
-    # pip silently replaces distutils with setuptools
-    depends_on('py-setuptools', type='build')
+
+    phases = ['build', 'install']
 
     def setup_run_environment(self, env):
         gosam_contrib_lib_dir = self.spec['gosam-contrib'].prefix.lib
         env.prepend_path('LD_LIBRARY_PATH', gosam_contrib_lib_dir)
+
+    def build(self, spec, prefix):
+        python('-s', 'setup.py', '--no-user-cfg', 'build')
+
+    def install(self, spec, prefix):
+        python('-s', 'setup.py', '--no-user-cfg', 'install', '--prefix=' + prefix)