Troubleshooting

Solutions to common problems when using FSH Lint.

Installation Issues

Cargo Install Fails

Problem: cargo install fsh-lint fails

Solutions:

1. Update Rust:

rustup update stable

2. Clear cargo cache:

rm -rf ~/.cargo/registry
cargo install fsh-lint

3. Build with verbose output:

cargo install fsh-lint -v

Binary Not Found

Problem: fsh-lint: command not found

Solution: Add Cargo bin to PATH:

export PATH="$HOME/.cargo/bin:$PATH"

Add to .bashrc or .zshrc for persistence.

Configuration Issues

Config File Not Found

Problem: FSH Lint can’t find configuration

Solution: Create config in project root:

fsh-lint init

Invalid Configuration

Problem: Configuration file is invalid

Solution: Validate against schema:

fsh-lint check --config fsh-lint.json

Linting Issues

Too Many Diagnostics

Problem: Overwhelming number of errors

Solutions:

1. Start with errors only:

fsh-lint lint --severity error **/*.fsh

2. Fix automatically:

fsh-lint lint --fix **/*.fsh

3. Temporarily disable rules:

{
  "linter": {
    "rules": {
      "style": "off"
    }
  }
}

False Positives

Problem: Rule incorrectly reports issue

Solutions:

1. Disable inline:

// fsh-lint-disable-next-line rule-name
Profile: MyProfile

2. Adjust rule severity:

{
  "linter": {
    "rules": {
      "style/naming-convention": "off"
    }
  }
}

Performance Issues

Slow Linting

Problem: Linting takes too long

Solutions:

1. Exclude large directories:

{
  "files": {
    "exclude": ["**/node_modules/**", "**/build/**"]
  }
}

2. Limit file scope:

fsh-lint lint input/fsh/ --ignore-pattern "**/*.generated.fsh"

High Memory Usage

Problem: FSH Lint uses too much memory

Solution: Process files in batches:

find . -name "*.fsh" -print0 | xargs -0 -n 10 fsh-lint lint

CI/CD Issues

Build Timeout

Problem: CI builds timeout during installation

Solution: Use cached binaries:

- name: Download FSH Lint
  run: |
    curl -L https://github.com/octofhir/fsh-lint-rs/releases/latest/download/fsh-lint-linux.tar.gz | tar xz
    sudo mv fsh-lint /usr/local/bin/

Inconsistent Results

Problem: Different results in CI vs local

Solution: Pin FSH Lint version:

cargo install fsh-lint --version 0.1.0

Output Issues

No Color in CI

Problem: CI output lacks color

Solution: Force color output:

fsh-lint --color always lint **/*.fsh

Garbled Output

Problem: Output has encoding issues

Solution: Set UTF-8 encoding:

export LANG=en_US.UTF-8
fsh-lint lint **/*.fsh

Getting Help

If you’re still stuck:

1. Check GitHub Issues
2. Search Discussions
3. Open a new issue with:
   • FSH Lint version (fsh-lint --version)
   • OS and version
   • Minimal reproduction example
   • Full error output

Common Error Messages

”Failed to parse FSH file”

Cause: Invalid FSH syntax

Solution: Check FSH syntax against FSH spec

”Circular dependency detected”

Cause: Profile inherits from itself

Solution: Review parent relationships

”Unknown rule”

Cause: Referenced rule doesn’t exist

Solution: Run fsh-lint rules to see available rules