Dhall.TH: Call addDependentFile for each local import
#2620
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We call Language.Haskell.TH.addDependentFile for each local import so that GHC rebuilds if those files changes.
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This PR improves recompilation checking for modules that use the
Dhall.TH.staticDhallExpressionfunction and theDhall.TH.dhallQuasi Quoter. Specifically, we callLanguage.Haskell.TH.addDependentFilefor each local import appearing in a Dhall expression: By doing that GHC will rebuild the module splicing in that expression if one of its local imports changes.In order to collect the imports that where processed in the import resolution phase a new function
resolveAndStatusWithSettingswas added to theDhallmodule. This function also returns the final import status (Dhall.Import.Status) together with the resolved expression.Fixes #2518