#1480: Template Haskell should allow reification of modules ----------------------------+---------------------------------------------- Reporter: igloo | Owner: Type: feature | Status: closed request | Milestone: 7.8.1 Priority: highest | Version: 7.7 Component: | Keywords: Template Haskell | Architecture: Unknown/Multiple Resolution: fixed | Difficulty: Moderate (less than a day) Operating System: | Blocked By: Unknown/Multiple | Related Tickets: Type of failure: | None/Unknown | Test Case: | Blocking: 8398 | ----------------------------+---------------------------------------------- Comment (by simonmar): The source of truth for the design around usages and recompilation is [wiki:Commentary/Compiler/RecompilationAvoidance]. You're right that !UsagePackageModule doesn't have a usg_exports field. For package modules we record a lower resolution dependency, just the hash of the whole module. The rationale is that package modules don't change very often, so we don't need to track fine-grained dependency information about them. This does mean that we can't tell the difference between a direct import and an indirect import of a packages module from the `Usages`. Probably if you need to get a list of direct imports you should get it from somewhere else, e.g. `mg_dir_imps` from `ModGuts`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/1480#comment:22 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler