diff options
Diffstat (limited to 'compiler/main')
| -rw-r--r-- | compiler/main/HscTypes.lhs | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/compiler/main/HscTypes.lhs b/compiler/main/HscTypes.lhs index a65437e31a..260377062f 100644 --- a/compiler/main/HscTypes.lhs +++ b/compiler/main/HscTypes.lhs @@ -1794,10 +1794,17 @@ data Usage usg_safe :: IsSafeImport -- ^ Was this module imported as a safe import } -- ^ Module from the current package + -- | A file upon which the module depends, e.g. a CPP #include, or using TH's + -- 'addDependentFile' | UsageFile { usg_file_path :: FilePath, + -- ^ External file dependency. From a CPP #include or TH + -- addDependentFile. Should be absolute. usg_file_hash :: Fingerprint - -- ^ External file dependency. From a CPP #include or TH addDependentFile. Should be absolute. + -- ^ 'Fingerprint' of the file contents. We don't consider + -- things like modification timestamps here, because there's + -- no reason to recompile if the actual contents don't change. + -- This previously lead to odd recompilation behaviors; see #8114 } deriving( Eq ) -- The export list field is (Just v) if we depend on the export list: |