ghc-pkg library
On Twitter, Anthony Cowley was wondering why there was no GHC API functions for taking Cabal InstalledPackageInfos and turning them into GHC InstalledPackageInfos. https://twitter.com/a_cowley/status/680158885953564672
No such interface exists: to keep GHC decoupled from Cabal, the GHC package representation is mediated solely by ghc-pkg
, so the "correct" way to create a package config file, run ghc-pkg
to load it into the GHC binary representation, and go from there.
It seems like it would be convenient if ghc-pkg
was libified, and so people who linked against GHC and Cabal could just directly do the conversion without going through ghc-pkg
. It's unclear what the right interface is; ghc-pkg does a number of sanity checks and it's unclear if those should be libified too. Any such library also must be uploaded to Hackage, because if you want to link against a newer version of Cabal you have to rebuild the ghc-pkg library against the newest version of Cabal.
Trac metadata
Trac field | Value |
---|---|
Version | 7.11 |
Type | FeatureRequest |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Package system |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | acowley |
Operating system | |
Architecture |