EESSI_INIT_PREFIX for overriding location of EB hooks

Author: bedroge

EESSI-extend-easybuild.eb

@@ -176,7 +176,8 @@ end
 setenv ("EASYBUILD_SYSROOT", sysroot)
 setenv ("EASYBUILD_PREFIX", pathJoin(working_dir, "easybuild"))
 setenv ("EASYBUILD_INSTALLPATH", easybuild_installpath)
-setenv ("EASYBUILD_HOOKS", pathJoin(os.getenv("EESSI_PREFIX"), "init", "easybuild", "eb_hooks.py"))
+eessi_init_prefix = os.getenv("EESSI_INIT_PREFIX") or pathJoin(os.getenv("EESSI_PREFIX"), "init")
+setenv ("EASYBUILD_HOOKS", pathJoin(eessi_init_prefix, "easybuild", "eb_hooks.py"))
 
 -- Make sure to use the general umask that allows a global read
 setenv ("EASYBUILD_UMASK", "022")