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. |
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For older versions of this document: |
For older versions of this document: |
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* [[/Updating to GHC 6.8]] |
* [[/Updating to GHC 6.8]] |
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| − | + | '''Updating to GHC 6.10 and Cabal 1.6''' |
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| − | Main changes: |
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| + | When upgrading to GHC 6.10, any of your packages that worked against |
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| + | the base-3 library will continue to work. GHC 6.10 provides both the old |
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| + | base-3 library and the new base-4. |
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| − | * base-3 '''and''' base-4 will be installed, meaning you can always |
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| + | To ensure your old code continues to work, you can have the code compile |
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| − | force packages to build against the old base. |
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| + | and link against base-3, and then, over time, migrate code to the base-4 |
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| + | series. |
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| ⚫ | |||
| + | == Adding base-3 constraints == |
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| + | |||
| + | How to do this depends on how you build your Haskell code. We'll start |
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| + | with the most simplistic build mechanisms. cabal-install, the most |
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| + | sophisticated tool, will sort this all out for you anyway, so things |
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| + | should change. |
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| + | |||
| + | === ghc --make === |
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| + | |||
| + | Force use of package base-3 when using --make, |
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| + | |||
| + | ghc --make --package base-3.0.3.0 |
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===runhaskell === |
===runhaskell === |
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| − | Packages that require base-3 (e.g. for old implementations of the |
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| + | If you build your packages with the 'runhaskell Setup.hs configure' |
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| − | exceptoin type, can be built using runhaskell Setup.hs with: |
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| + | method, then you can force the use of base-3, |
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| + | |||
| ⚫ | |||
| + | |||
| ⚫ | |||
| + | |||
| + | No change required. Should it be necessary to override, use |
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| + | |||
| + | --constraint="base<4" |
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| ⚫ | |||
| + | == Changes in base 4 == |
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| + | * Exceptions |
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[[Category:Libraries]] |
[[Category:Libraries]] |
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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