{"record":{"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/f399c3718970b1b0e2478dac5296eb62679a9b86/src/pip/_internal/commands/configuration.py#L261-L290","documentation":"Raised by `pip config` when persisting the configuration fails unexpectedly. _save_configuration at configuration.py:270 wraps configuration.save() in a try/except; any exception is logged with a traceback ('Unable to save configuration. Please report this as a bug.') and re-raised as a generic PipError('Internal Error.'). This is a catch-all for unforeseen save failures.","triggerScenarios":"A `pip config set` or `pip config unset` operation completes in-memory but configuration.save() raises — e.g. the target config file's directory was removed mid-operation, a permissions issue on write, or an encoding/serialization bug in the configuration writer.","commonSituations":"Filesystem permission denial on the config path, disk full, or a genuinely rare bug in pip's configuration save logic. The full traceback is logged before the generic message, so it indicates something pip did not anticipate.","solutions":["Re-run with -v (verbose) to capture the logged traceback that precedes 'Internal Error.' — it reveals the real cause.","Verify the config file path is writable: check `pip config debug` for the file location and its permissions.","Ensure the parent directory exists and is writable; create it if missing.","If the traceback points to a pip bug, report it with the traceback at https://github.com/pypa/pip/issues.","As a workaround, edit the config file directly instead of using `pip config set`."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"# Pre-check that the config file path is writable\nimport os\nfrom pip._internal.configuration import get_configuration_files, kinds\n\ndef config_writable(kind=kinds.USER):\n    fname = get_configuration_files()[kind][0]\n    d = os.path.dirname(fname) or \".\"\n    return os.path.isdir(d) and os.access(d, os.W_OK)\n","typeGuard":null,"tryCatchPattern":"import subprocess, shutil\ntry:\n    subprocess.run([\"pip\", \"config\", \"set\", key, value], check=True)\nexcept subprocess.CalledProcessError:\n    # 'Internal Error' — fall back to editing the file directly\n    edit_config_file_directly(key, value)\n","preventionTips":["Verify the config directory exists and is writable before running set/unset.","Run with -v to capture the real traceback behind 'Internal Error.'.","Keep pip updated; report persistent internal errors with the traceback."],"tags":["cli","pip-config","configuration","filesystem","internal-error","bug-report"],"backgroundTag":null,"analyzedSha":"f399c3718970b1b0e2478dac5296eb62679a9b86","analyzedAt":"2026-08-08T23:01:42.227Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}