Integrate secretspec.dev

[domenkozar]

We've long supported .env integration, but that has quite a few issues:

• app is disconnected from what secrets are provided
• parsing .env is unclear Support dotenv comments #1040
• it's tricky to use password managers with .env
• lock-in to .env provider
• lack of encryption

So we've created https://secretspec.dev and integrated it.

[claude]

Claude finished @domenkozar's task —— View job

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PR Review: Integrate secretspec.dev

Review Tasks:

• Analyze Rust code changes in core files
• Review Nix module integration
• Check error handling and edge cases
• Examine test coverage and quality
• Review documentation and examples
• Security and performance considerations
• Provide constructive feedback

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Code Quality Issues

1. Error Handling and User Experience

• devenv/src/devenv.rs:1271: The validation error message could be more informative:

  bail!(
      "Required secrets are missing: {} (provider: {}, profile: {})",
      validation_errors.missing_required.join(", "),
      validation_errors.provider,
      validation_errors.profile
  );

  Consider adding guidance on how to fix the issue or where to find documentation.

2. Resource Management

• devenv/src/devenv.rs:1259: The secrets.validate()? pattern is unclear - consider using explicit error handling:

  match secrets.validate() {
      Ok(Ok(validated_secrets)) => { /* success */ }
      Ok(Err(validation_errors)) => { /* validation failed */ }
      Err(e) => { /* secretspec API error */ }
  }

3. Configuration Logic

• devenv/src/devenv.rs:1220-1245: The secretspec configuration logic is complex and could be simplified. Consider extracting to a dedicated function:

  fn should_load_secretspec(config: &Config, secretspec_path: &Path) -> bool {
      let enabled = config.secretspec.as_ref().map(|c| c.enable).unwrap_or(false);
      let exists = secretspec_path.exists();
      enabled && exists
  }

4. Type Safety

• devenv/src/nix.rs:619-628: The JSON serialization of secrets data could fail silently. Consider handling the error:

  if let Some(resolved) = self.secretspec_resolved.get() {
      let secrets_data = serde_json::json!({
          "secrets": resolved.secrets,
          "profile": resolved.profile,
          "provider": resolved.provider
      });
      let secrets_json = serde_json::to_string(&secrets_data)
          .map_err(|e| miette!("Failed to serialize secrets: {}", e))?;
      cmd.env("SECRETSPEC_SECRETS", secrets_json);
  }

Architecture Concerns

1. Shared State Management

• devenv/src/devenv.rs:95: The secretspec_resolved field uses Arc<OnceCell<>> which is good, but consider making the inner type more explicit about its purpose:

  type SecretspecResolved = secretspec::Resolved<HashMap<String, String>>;
  secretspec_resolved: Arc<OnceCell<SecretspecResolved>>,

2. Environment Variable Security

• devenv/src/nix.rs:626: Passing secrets through environment variables (SECRETSPEC_SECRETS) could be a security risk. Consider using a temporary file or secure IPC mechanism instead.

3. Configuration Coupling

• devenv/src/config.rs:163: The SecretspecConfig struct is tightly coupled to the main config. Consider making it more standalone for better testability.

Performance Issues

1. Synchronous Operations

• devenv/src/devenv.rs:1259: The secrets.validate() call may perform I/O operations synchronously. Consider making it async if the secretspec API supports it.

2. Memory Usage

• devenv/src/devenv.rs:1275: Storing resolved secrets in memory for the entire process lifetime. Consider implementing a cleanup mechanism or time-based expiration.

Test Coverage Gaps

1. Edge Cases Missing

• No tests for malformed secretspec.toml files
• No tests for network failures when accessing external providers
• No tests for permission errors when accessing secret stores
• No tests for large secret payloads

2. Integration Test Limitations

• tests/secretspec/devenv.nix: The test only validates JSON structure, not actual secret loading from different providers
• Missing tests for profile/provider override functionality

Documentation Issues

1. Error Messages

• devenv/src/devenv.rs:1230-1244: The warning message for unconfigured secretspec is helpful but could include troubleshooting steps.

2. Configuration Examples

• docs/integrations/secretspec.md: Missing examples for error scenarios and troubleshooting common issues.

Security Considerations

1. Secret Exposure

• Consider implementing secret redaction in debug logs to prevent accidental exposure
• Add validation for secret key names to prevent injection attacks

2. Validation

• The Nix module assumes SECRETSPEC_SECRETS is well-formed JSON without validation

Recommended Improvements

1. Add comprehensive error handling with user-friendly messages and actionable guidance
2. Implement proper async handling for secretspec operations
3. Add security-focused logging that redacts sensitive information
4. Expand test coverage for edge cases and different provider scenarios
5. Consider memory management for long-running processes with large secret sets
6. Add configuration validation to catch issues early
7. Implement proper cleanup for temporary secret storage

The integration is well-designed overall, but these improvements would enhance robustness, security, and user experience.

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