JuliusBrussee/caveman · error

create %s: %w

Error message

create %s: %w

What it means

Error "create %s: %w" thrown in JuliusBrussee/caveman.

Source

Thrown at shrink/shrink.go:92

// defaultCCRPath resolves the durable shared recovery store path, mirroring the
// engine CLI, MCP server, and proxy: CAVEMAN_CCR_DB, else CAVEMAN_HOME/ccr.db,
// else ~/.caveman/ccr.db. It creates the parent directory so the first shrink on a
// machine succeeds.
func defaultCCRPath() (string, error) {
	if p := os.Getenv("CAVEMAN_CCR_DB"); p != "" {
		return p, nil
	}
	home := os.Getenv("CAVEMAN_HOME")
	if home == "" {
		h, err := os.UserHomeDir()
		if err != nil {
			return "", fmt.Errorf("resolve home directory: %w", err)
		}
		home = filepath.Join(h, ".caveman")
	}
	if err := os.MkdirAll(home, 0o700); err != nil {
		return "", fmt.Errorf("create %s: %w", home, err)
	}
	return filepath.Join(home, "ccr.db"), nil
}

// Result is the outcome of Shrink.
type Result struct {
	Output         []byte  `json:"-"`
	TokensBefore   int     `json:"tokens_before"`
	TokensAfter    int     `json:"tokens_after"`
	Ratio          float64 `json:"ratio"`
	Basis          string  `json:"basis"`
	ContentType    string  `json:"content_type"`
	RecoveryHandle string  `json:"recovery_handle,omitempty"`
}

// Shrink compresses a tool catalog with an S4 lossy transform. It is fail-open:
// on any parse problem or when the result would not be smaller, it returns the
// input unchanged with ratio 0 and no handle.

View on GitHub (pinned to 27d5a3981a)

Solutions

1. Fix directory creation (path/permissions) and retry.

When it happens

Trigger: Thrown at shrink/shrink.go:92 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of JuliusBrussee/caveman@27d5a3981a (2026-08-15). Data as JSON: /api/errors/b3b466598944b879. Report an issue: GitHub.