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 | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |