{"id":"26c00daf5bec8616","repo":"pypa/pip","slug":"internal-error","errorCode":null,"errorMessage":"Internal Error.","messagePattern":"Internal Error\\.","errorType":"exception","errorClass":"PipError","httpStatus":null,"severity":"error","filePath":"src/pip/_internal/commands/configuration.py","lineNumber":279,"sourceCode":"                f'(example: \"{get_prog()} config {example}\")'\n            )\n            raise PipError(msg)\n\n        if n == 1:\n            return args[0]\n        else:\n            return args\n\n    def _save_configuration(self) -> None:\n        # We successfully ran a modifying command. Need to save the\n        # configuration.\n        try:\n            self.configuration.save()\n        except Exception:\n            logger.exception(\n                \"Unable to save configuration. Please report this as a bug.\"\n            )\n            raise PipError(\"Internal Error.\")\n\n    def _determine_editor(self, options: Values) -> str:\n        if options.editor is not None:\n            return options.editor\n        elif \"VISUAL\" in os.environ:\n            return os.environ[\"VISUAL\"]\n        elif \"EDITOR\" in os.environ:\n            return os.environ[\"EDITOR\"]\n        else:\n            raise PipError(\"Could not determine editor to use.\")\n","sourceCodeStart":261,"sourceCodeEnd":290,"githubUrl":"https://github.com/pypa/pip/blob/d7d0d0a39494e28ec1c407bd0680e4a4d1067791/src/pip/_internal/commands/configuration.py#L261-L290","documentation":"Raised by ConfigurationCommand._save_configuration when self.configuration.save() raises any unexpected Exception. pip logs the full traceback ('Unable to save configuration. Please report this as a bug.') and then converts the failure into a generic PipError 'Internal Error.' because the configuration model should not normally fail to serialize. It is pip's catch-all for an unrecoverable save fault.","triggerScenarios":"A set/unset operation completes in-memory but writing the config file back fails with an exception other than the expected PipError - e.g. OSError on write, a PermissionError, a KeyError in the configparser, or a bug in Configuration.save.","commonSituations":"Read-only or full disk where the config file lives; a corrupted existing config file that fails to round-trip; permission changes between read and write; genuinely a pip bug in the save path.","solutions":["Check disk space and write permissions on the target config file (shown by 'pip config debug').","Run with -vv to capture the underlying traceback pip logged just before 'Internal Error.'.","Back up then delete the suspect config file and recreate it with 'pip config set'.","If the traceback indicates a pip bug, report it with the full -vv log as the message requests."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"import os\npath = config_file_path  # from 'pip config debug'\nd = os.path.dirname(path)\nif not os.access(d or \".\", os.W_OK):\n    raise SystemExit(f\"config dir {d!r} not writable; cannot save\")","typeGuard":null,"tryCatchPattern":"try:\n    configuration.save()\nexcept OSError as e:\n    # surface the real cause instead of pip's generic 'Internal Error.'\n    raise SystemExit(f\"failed to save config: {e}\") from e","preventionTips":["Run 'pip config debug' to confirm the target file path and that it is writable.","Keep free disk space on the volume holding the config file.","Run pip with -vv so the underlying traceback is logged before 'Internal Error.'."],"tags":["pip","config","internal-error","filesystem","serialization"],"analyzedSha":"d7d0d0a39494e28ec1c407bd0680e4a4d1067791","analyzedAt":"2026-08-04T20:55:04.259Z","schemaVersion":2}