implement check if skipped linters are available

will only work with 24.0

planemo/lint.py

@@ -4,7 +4,10 @@
 from urllib.request import urlopen
 
 import requests
-from galaxy.tool_util.lint import LintContext
+from galaxy.tool_util.lint import (
+    LintContext,
+    list_linters,
+)
 
 from planemo.io import error
 from planemo.shed import find_urls_for_xml
@@ -30,6 +33,18 @@ def build_lint_args(ctx, **kwds):
                     continue
                 skip_types.append(line)
 
+    from planemo.linters import (
+        biocontainer_registered,
+        conda_requirements,
+        doi,
+        urls,
+        xsd,
+    )
+    linters = list_linters([biocontainer_registered, conda_requirements, doi, urls, xsd])
+    for skip_type in skip_types:
+        if skip_type not in linters:
+            error(f"Unknown linter type {skip_type} in list of linters to be skipped. Known linters {linters}")
+
     lint_args = dict(
         level=report_level,
         fail_level=fail_level,