Use more primitive way to detect version dependency

spack_repo/packages/dwd-icon-tools/package.py

@@ -23,7 +23,6 @@
 from spack.package import *
 import os
 from urllib.parse import urlparse
-from packaging import version
 
 class DwdIconTools(Package):
     """DWD Icon Tools"""
@@ -45,7 +44,7 @@ class DwdIconTools(Package):
 
     depends_on("netcdf-c")
     depends_on("netcdf-fortran")
-    if version.parse(spack.spack_version) < version.parse("23.0.1"):
+    if int(spack.spack_version.split(".")[0]) < 23:
         depends_on("eccodes+fortran")
     else:
         depends_on("eccodes+fortran+tools")

spack_repo/packages/icon-nwp/package.py

@@ -8,7 +8,6 @@ import os
 from urllib.parse import urlparse
 
 from spack.package import *
-from packaging import version
 
 class IconNwp(Package):
     """
@@ -57,10 +56,11 @@ class IconNwp(Package):
     depends_on("mpi")
     depends_on("netcdf-c")
     depends_on("netcdf-fortran")
-    if version.parse(spack.spack_version) < version.parse("23.0.1"):
+    if int(spack.spack_version.split(".")[0]) < 23:
         depends_on("eccodes+fortran")
     else:
         depends_on("eccodes+fortran+tools")
+
     depends_on("libxml2")
 
     # If you using inwp_psp=2 (with non-divergent 3D flow), petsc is necessary