Difference between revisions of "Upgrading packages/Updating to GHC 6.10"
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If you maintain a Haskell package this is for you. | If you maintain a Haskell package this is for you. | ||
− | |||
For older versions of this document: | For older versions of this document: | ||
* [[/Updating to GHC 6.8]] | * [[/Updating to GHC 6.8]] | ||
− | + | '''Updating to GHC 6.10 and Cabal 1.6''' | |
+ | |||
+ | When upgrading to GHC 6.10, any of your packages that worked against | ||
+ | the base-3 library will continue to work. GHC 6.10 provides both the old | ||
+ | base-3 library and the new base-4. | ||
+ | |||
+ | To ensure your old code continues to work, you can have the code compile | ||
+ | and link against base-3, and then, over time, migrate code to the base-4 | ||
+ | series. | ||
+ | |||
+ | == Adding base-3 constraints == | ||
− | + | How to do this depends on how you build your Haskell code. We'll start | |
+ | with the most simplistic build mechanisms. cabal-install, the most | ||
+ | sophisticated tool, will sort this all out for you anyway, so things | ||
+ | should change. | ||
− | + | === ghc --make === | |
− | + | ||
+ | Force use of package base-3 when using --make, | ||
+ | |||
+ | ghc --make --package base-3.0.3.0 | ||
+ | |||
+ | ===runhaskell === | ||
+ | |||
+ | If you build your packages with the 'runhaskell Setup.hs configure' | ||
+ | method, then you can force the use of base-3, | ||
+ | |||
+ | --constraint="base<4" | ||
=== cabal-install=== | === cabal-install=== | ||
− | + | No change required. Should it be necessary to override, use | |
− | + | --constraint="base<4" | |
− | |||
− | + | == Changes in base 4 == | |
+ | * Exceptions | ||
[[Category:Libraries]] | [[Category:Libraries]] |
Revision as of 04:06, 9 October 2008
A list of things that need updating when porting packages to newer library/cabal versions.
If you maintain a Haskell package this is for you. For older versions of this document:
Updating to GHC 6.10 and Cabal 1.6
When upgrading to GHC 6.10, any of your packages that worked against the base-3 library will continue to work. GHC 6.10 provides both the old base-3 library and the new base-4.
To ensure your old code continues to work, you can have the code compile and link against base-3, and then, over time, migrate code to the base-4 series.
Contents
Adding base-3 constraints
How to do this depends on how you build your Haskell code. We'll start with the most simplistic build mechanisms. cabal-install, the most sophisticated tool, will sort this all out for you anyway, so things should change.
ghc --make
Force use of package base-3 when using --make,
ghc --make --package base-3.0.3.0
runhaskell
If you build your packages with the 'runhaskell Setup.hs configure' method, then you can force the use of base-3,
--constraint="base<4"
cabal-install
No change required. Should it be necessary to override, use
--constraint="base<4"
Changes in base 4
- Exceptions