Migration Guide

This page shall provide information to help migrating between major GHC releases.

Related Information

Possibly useful information can also be found in the following places:

• Commentary/Libraries/VersionHistory
• LanguagePragmaHistory
• "Release Notes" chapter in the GHC User's Guide
• GHC Boot Package changelogs on Hackage (e.g. base's changelog)

Version-specific Migration Guides

• Migrating from GHC 9.2.x to GHC 9.4.x

• Migrating from GHC 9.0.x to GHC 9.2.x

• Migrating from GHC 8.10.x to GHC 9.0.x

• Migrating from GHC 8.8.x to GHC 8.10.x

• Migrating from GHC 8.6.x to GHC 8.8.x

• Migrating from GHC 8.4.x to GHC 8.6.x

• Migrating from GHC 8.2.x to GHC 8.4.x

• Migrating from GHC 8.0.x to GHC 8.2.x

• Migrating from GHC 7.10.x to GHC 8.0.x

• Migrating from GHC 7.8.x to GHC 7.10.x

• Migrating from GHC 7.6.x to GHC 7.8.x