Built in MIN_VERSION macro support
Pursuant to https://mail.haskell.org/pipermail/ghc-devs/2015-September/010015.html
Recapped here: when preprocessing Haskell source code, we generate a temporary stub header file which defines a number of MIN_VERSION macros, ala what Cabal generates today. Specifically, for every explicitly specified package dependency (via a -package or -package-id argument), we generate a MIN_VERSION_pkgname macro which tests for the version recorded for the package database.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.11 |
| Type | FeatureRequest |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
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