Ticket #44267: root-python-check.diff

science/root6/Portfile

@@ -344 +344 @@
     set py_ver_no_dot [join [split ${py_ver} "."] ""]
     if {[variant_isset python${py_ver_no_dot}]} {
 
+        set active_python_version        ${py_ver}
+        set active_python_version_no_dot ${py_ver_no_dot}
+
         # Check root5 variants
-        set portname root5
-        if {![catch {set result [active_variants ${portname} python${py_ver_no_dot}]}]} {
-            if {$result} {
-                ui_error "Cannot install ${name} with +python${py_ver_no_dot} variant"
-                return -code error "${portname} port is already installed with +python${py_ver_no_dot} and both cannot be active at once. Pick a different python variant."
+        pre-activate {
+            set portname root5
+            if {![catch {set result [active_variants ${portname} python${active_python_version_no_dot}]}]} {
+                if {$result} {
+                    ui_error "Cannot install ${name} with +python${active_python_version_no_dot} variant"
+                    return -code error "${portname} port is already installed with +python${active_python_version_no_dot} and both cannot be active at once. Pick a different python variant."
+                }
             }
         }
 
@@ -360 +365 @@
                                 -DPYTHON_LIBRARY="${prefix}/lib/libpython${py_ver}.dylib" \
                                 -DPYTHON_EXECUTABLE="${prefix}/bin/python${py_ver}"
         depends_lib-append      port:python${py_ver_no_dot}
-        set active_python_version ${py_ver}
+        
         post-destroot {
             set mypylibdir  ${prefix}/Library/Frameworks/Python.framework/Versions/${active_python_version}/lib/python${active_python_version}
             set mypysitedir ${mypylibdir}/site-packages/