DNF module only enabled when DNF available and dynamically loads corrections

thefuck/rules/dnf_no_such_command.py

@@ -1,36 +1,9 @@
+import subprocess
 import re
 from thefuck.specific.sudo import sudo_support
 from thefuck.utils import for_app, replace_command
+from thefuck.specific.dnf import dnf_available
 
-dnf_commands = [
-    'autoremove',
-    'check',
-    'check-update',
-    'clean',
-    'deplist',
-    'distro-sync',
-    'downgrade',
-    'group',
-    'help',
-    'history',
-    'info',
-    'install',
-    'list',
-    'makecache',
-    'mark',
-    'provides',
-    'reinstall',
-    'remove',
-    'repolist',
-    'repoquery',
-    'repository-packages',
-    'search',
-    'shell',
-    'swap',
-    'updateinfo',
-    'upgrade',
-    'upgrade-minimal'
-]
 
 regex = re.compile(r'No such command: (.*)\.')
 
@@ -41,10 +14,24 @@ def match(command):
     return 'no such command' in command.output.lower()
 
 
+def _parse_operations(help_text_lines):
+    operation_regex = re.compile(b'^([a-z-]+) +', re.MULTILINE)
+    return operation_regex.findall(help_text_lines)
+
+
+def _get_operations():
+    proc = subprocess.Popen(["dnf", '--help'],
+                            stdout=subprocess.PIPE,
+                            stderr=subprocess.PIPE)
+    lines = proc.stdout.read()
+
+    return _parse_operations(lines)
+
+
 @sudo_support
 def get_new_command(command):
     misspelled_command = regex.findall(command.output)[0]
-    return replace_command(command, misspelled_command, dnf_commands)
+    return replace_command(command, misspelled_command, _get_operations())
 
 
-enabled_by_default = True
+enabled_by_default = dnf_available

thefuck/specific/dnf.py

@@ -0,0 +1,3 @@
+from thefuck.utils import which
+
+dnf_available = bool(which('dnf'))