Remove Empy Support

.github/workflows/tests.yml

@@ -38,7 +38,7 @@ jobs:
         uses: cylc/release-actions/install-cylc-components@v1
         with:
           cylc_flow: true
-          cylc_flow_opts: 'empy'
+          cylc_flow_opts: ''
           metomi_rose: true
           metomi_rose_opts: ''
 

CHANGES.md

@@ -6,6 +6,11 @@ creating a new release entry be sure to copy & paste the span tag with the
 updated. Only the first match gets replaced, so it's fine to leave the old
 ones in. -->
 
+## __cylc-rose-1.5.0 (<span actions:bind='release-date'>Upcoming</span>)__
+
+[#353](https://github.com/cylc/cylc-rose/pull/353) - Remove Empy support.
+Cylc has dropped empy support at Cylc 8.4.0.
+
 ## __cylc-rose-1.4.2 (<span actions:bind='release-date'>Released 2024-11-07</span>)__
 
 [#345](https://github.com/cylc/cylc-rose/pull/345) - Fix an issue

README.md

@@ -45,7 +45,7 @@ environment for Rose integration.
 
 This plugin provides support for the `rose-suite.conf` file, namely:
 
-* Jinja2/EmPy template variables.
+* Jinja2 template variables.
 * Scheduler environment variables.
 * File installation.
 * Optional configurations.

cylc/rose/__init__.py

@@ -59,15 +59,15 @@
    ``opts=A B C``, A space limited list of optional configs.
    ``[env]``, "Variables which the cylc-rose plugin will export to the
    environment."
-   ``[template variables]``, "Variables which can be used by Jinja2 or Empy
+   ``[template variables]``, "Variables which can be used by Jinja2
    in the workflow definition."
    ``[file:destination]``, A file from one or more sources to be installed.
 
 .. note::
 
-   For compatibility with Cylc 7, sections ``[suite.rc:empy]`` and
-   ``[suite.rc:jinja2]`` will be processed, but are deprecated and provided
-   for ease of porting Cylc 7 workflows.
+   For compatibility with Cylc 7, section ``[suite.rc:jinja2]`` will be
+   processed, but is deprecated and provided for ease of porting Cylc 7
+   workflows.
 
 
 The ``global.cylc`` file

cylc/rose/entry_points.py

@@ -46,9 +46,8 @@
 
     # If we are validating against source, load saved CLI options
     # from previous install, as saved in the rose-suite-cylc-install.conf
-    if (
-        getattr(opts, 'against_source', False)
-        and isinstance(opts.against_source, Path)
+    if getattr(opts, 'against_source', False) and isinstance(
+        opts.against_source, Path
     ):
         opts = retrieve_installed_cli_opts(srcdir, opts)
 
@@ -102,6 +101,4 @@
     from cylc.rose.stem import get_rose_stem_opts, rose_stem
 
     parser, opts = get_rose_stem_opts()
-    asyncio.run(
-        rose_stem(parser, opts)
-    )
+    asyncio.run(rose_stem(parser, opts))

cylc/rose/utilities.py

@@ -49,7 +49,7 @@
 
 
 ROSE_SUITE_OPT_CONF_KEYS = 'ROSE_SUITE_OPT_CONF_KEYS'
-SECTIONS = {'jinja2:suite.rc', 'empy:suite.rc', 'template variables'}
+SECTIONS = {'jinja2:suite.rc', 'template variables'}
 SET_BY_CYLC = 'set by Cylc'
 ROSE_ORIG_HOST_INSTALLED_OVERRIDE_STRING = (
     ' ROSE_ORIG_HOST set by cylc install.'
@@ -59,7 +59,7 @@
 STANDARD_VARS = [
     ('ROSE_ORIG_HOST', get_host()),
     ('ROSE_VERSION', ROSE_VERSION),
-    ('CYLC_VERSION', SET_BY_CYLC)
+    ('CYLC_VERSION', SET_BY_CYLC),
 ]
 
 
@@ -104,7 +104,7 @@ def process_config(
         # default return value
         'env': {},
         'template_variables': {},
-        'templating_detected': None
+        'templating_detected': None,
     }
     config_node = config_tree.node
 
@@ -127,7 +127,6 @@ def process_config(
 
     # For each section process variables and add standard variables.
     for section in ['env', templating]:
-
         # This loop handles standard variables.
         # CYLC_VERSION - If it's in the config, remove it.
         # ROSE_VERSION - If it's in the config, replace it.
@@ -154,11 +153,8 @@ def process_config(
         # Use env_var_process to process variables which may need expanding.
         for key, node in config_node.value[section].value.items():
             try:
-                config_node.value[
-                    section
-                ].value[key].value = env_var_process(
-                    node.value,
-                    environ=environ
+                config_node.value[section].value[key].value = env_var_process(
+                    node.value, environ=environ
                 )
                 if section == 'env':
                     environ[key] = node.value
@@ -168,13 +164,13 @@ def process_config(
     # For each of the template language sections extract items to a simple
     # dict to be returned.
     plugin_result['env'] = {
-        item[0][1]: item[1].value for item in
-        config_node.value['env'].walk()
+        item[0][1]: item[1].value
+        for item in config_node.value['env'].walk()
         if item[1].state == ConfigNode.STATE_NORMAL
     }
     plugin_result['template_variables'] = {
-        item[0][1]: item[1].value for item in
-        config_node.value[templating].walk()
+        item[0][1]: item[1].value
+        for item in config_node.value[templating].walk()
         if item[1].state == ConfigNode.STATE_NORMAL
     }
 
@@ -198,12 +194,13 @@ def process_config(
                         value,
                         f'Invalid template variable: {value}'
                         '\nMust be a valid Python or Jinja2 literal'
-                        ' (note strings "must be quoted").'
+                        ' (note strings "must be quoted").',
                     ) from None
 
     # Add ROSE_SUITE_VARIABLES to plugin_result of templating engines in use.
-    plugin_result['template_variables'][
-        'ROSE_SUITE_VARIABLES'] = plugin_result['template_variables']
+    plugin_result['template_variables']['ROSE_SUITE_VARIABLES'] = (
+        plugin_result['template_variables']
+    )
 
     return plugin_result
 
@@ -227,15 +224,12 @@ def identify_templating_section(config_node):
 
 
 def id_templating_section(
-    section: Optional[str] = None,
-    with_brackets: bool = False
+    section: Optional[str] = None, with_brackets: bool = False
 ) -> str:
     """Return a full template section string."""
     templating = None
     if section and 'jinja2' in section:
         templating = 'jinja2:suite.rc'
-    elif section and 'empy' in section:
-        templating = 'empy:suite.rc'
 
     if not templating:
         templating = 'template variables'
@@ -293,6 +287,7 @@ def rose_config_tree_loader(
 
     # Load the config tree
     from metomi.rose.config_tree import ConfigTreeLoader
+
     config_tree = ConfigTreeLoader().load(
         str(srcdir),
         'rose-suite.conf',
@@ -340,7 +335,7 @@ def merge_rose_cylc_suite_install_conf(old, new):
         >>> merge_rose_cylc_suite_install_conf(old, new)['opts']
         {'value': 'a b c d e', 'state': '', 'comments': []}
     """
-    # remove jinja2/empy:suite.rc from old if template variables in new
+    # remove jinja2:suite.rc from old if template variables in new
     for before, after in itertools.permutations(SECTIONS, 2):
         if new.value.get(after, '') and old.value.get(before, ''):
             # Choosing not to warn if user downgrades here because
@@ -395,12 +390,16 @@ def invalid_defines_check(defines: List) -> None:
         raise InvalidDefineError(msg)
 
 
-def parse_cli_defines(define: str) -> Union[
-    bool, str, Tuple[
+def parse_cli_defines(
+    define: str,
+) -> Union[
+    bool,
+    str,
+    Tuple[
         List[Union[str, Any]],
         Union[str, Any],
         Union[str, Any],
-    ]
+    ],
 ]:
     """Parse a define string.
 
@@ -435,15 +434,16 @@ def parse_cli_defines(define: str) -> Union[
             r'^\[(?P<section>.*)\](?P<state>!{0,2})'
             r'(?P<key>.*)\s*=\s*(?P<value>.*)'
         ),
-        define
+        define,
     )
     if match:
         groupdict = match.groupdict()
         keys = [groupdict['section'].strip(), groupdict['key'].strip()]
     else:
         # Doesn't have a section:
         match = re.match(
-            r'^(?P<state>!{0,2})(?P<key>.*)\s*=\s*(?P<value>.*)', define)
+            r'^(?P<state>!{0,2})(?P<key>.*)\s*=\s*(?P<value>.*)', define
+        )
         if match and not match['state']:
             groupdict = match.groupdict()
             keys = [groupdict['key'].strip()]
@@ -527,7 +527,7 @@ def get_cli_opts_node(srcdir: Path, opts: 'Values'):
         newconfig.set(
             keys=[templating, _match_groups['key']],
             value=_match_groups['value'],
-            state=_match_groups['state']
+            state=_match_groups['state'],
         )
 
     # Specialised treatement of optional configs.
@@ -718,12 +718,9 @@ def override_this_variable(node, section, variable):
     """
     if variable not in node[section]:
         return False
-    elif (
-        variable != 'ROSE_ORIG_HOST'
-        or (
-            ROSE_ORIG_HOST_INSTALLED_OVERRIDE_STRING not in
-            node[section][variable].comments
-        )
+    elif variable != 'ROSE_ORIG_HOST' or (
+        ROSE_ORIG_HOST_INSTALLED_OVERRIDE_STRING
+        not in node[section][variable].comments
     ):
         return True
     return False
@@ -754,8 +751,8 @@ def rose_orig_host_set_by_cylc_install(node, section, var):
     """
     if (
         var in node[section]
-        and ROSE_ORIG_HOST_INSTALLED_OVERRIDE_STRING in
-        node[section][var].comments
+        and ROSE_ORIG_HOST_INSTALLED_OVERRIDE_STRING
+        in node[section][var].comments
     ):
         return True
     return False
@@ -766,53 +763,42 @@ def deprecation_warnings(config_tree):
     Logs a warning for deprecated items:
         - "root-dir"
         - "jinja2:suite.rc"
-        - "empy:suite.rc"
         - root-dir
 
     If ALL_MODES is True this deprecation will ignore whether there is a
     flow.cylc or suite.rc in the workflow directory.
     """
 
     deprecations = {
-        'empy:suite.rc': {
-            MESSAGE: (
-                "'rose-suite.conf[empy:suite.rc]' is deprecated."
-                " Use [template variables] instead."),
-            ALL_MODES: False,
-        },
         'jinja2:suite.rc': {
             MESSAGE: (
                 "'rose-suite.conf[jinja2:suite.rc]' is deprecated."
-                " Use [template variables] instead."),
-            ALL_MODES: False,
-        },
-        'empy:flow.cylc': {
-            MESSAGE: (
-                "'rose-suite.conf[empy:flow.cylc]' is not used by Cylc."
-                " Use [template variables] instead."),
+                " Use [template variables] instead."
+            ),
             ALL_MODES: False,
         },
         'jinja2:flow.cylc': {
             MESSAGE: (
                 "'rose-suite.conf[jinja2:flow.cylc]' is not used by Cylc."
-                " Use [template variables] instead."),
+                " Use [template variables] instead."
+            ),
             ALL_MODES: False,
         },
         'root-dir': {
             MESSAGE: (
                 'You have set "rose-suite.conf[root-dir]", '
                 'which is not supported at '
                 'Cylc 8. Use `[install] symlink dirs` in global.cylc '
-                'instead.'),
+                'instead.'
+            ),
             ALL_MODES: True,
         },
     }
     for string in list(config_tree.node):
         for name, info in deprecations.items():
             if (
-                (info[ALL_MODES] or not cylc7_back_compat)
-                and name in string.lower()
-            ):
+                info[ALL_MODES] or not cylc7_back_compat
+            ) and name in string.lower():
                 LOG.warning(info[MESSAGE])
 
 
@@ -843,13 +829,10 @@ def load_rose_config(
     """
     # Return a blank config dict if srcdir does not exist
     if not rose_config_exists(srcdir):
-        if (
-            opts
-            and (
-                getattr(opts, "opt_conf_keys", None)
-                or getattr(opts, "defines", None)
-                or getattr(opts, "rose_template_vars", None)
-            )
+        if opts and (
+            getattr(opts, "opt_conf_keys", None)
+            or getattr(opts, "defines", None)
+            or getattr(opts, "rose_template_vars", None)
         ):
             raise NotARoseSuiteException()
         return ConfigTree()
@@ -951,9 +934,7 @@ def record_cylc_install_options(
 
     # Get Values for standard ROSE variable ROSE_ORIG_HOST.
     rose_orig_host = get_host()
-    for section in [
-        'env', 'jinja2:suite.rc', 'empy:suite.rc', 'template variables'
-    ]:
+    for section in list(SECTIONS) + ['env']:
         if section in cli_config:
             cli_config[section].set(['ROSE_ORIG_HOST'], rose_orig_host)
             cli_config[section]['ROSE_ORIG_HOST'].comments = [
@@ -1045,7 +1026,7 @@ def retrieve_installed_cli_opts(srcdir, opts):
 
     # Get --suite-defines/-S
     # Work out whether user has used "template variables", "jinja2:suite.rc"
-    # or "empy:suite.rc" (There is an assumption that they aren't mixing
+    # (There is an assumption that they aren't mixing
     # them that is not guarded against):
     for section in SECTIONS:
         if cli_config.value.get(section, False):

tests/conftest.py

@@ -308,7 +308,7 @@ async def _inner(wid, args):
         # Handle scripts taking a parser or just the output of the parser:
         for script_name, n_args in {
             'config': 3,
-            'list': 3,
+            'list': 2,
             'graph': 3,
             'view': 2,
             'validate': 3,