The transformers-compat package

[Tags: bsd3, library]

This package includes backported versions of types that were added to transformers in transformers 0.3 an 0.4 for users who need strict transformers 0.2 or 0.3 compatibility to run on old versions of the platform, but also need those types.

Those users should be able to just depend on transformers >= 0.2 and transformers-compat >= 0.3.

Note: missing methods are not supplied, but this at least permits the types to be used.

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Versions0.1, 0.1.1,, 0.2, 0.3, 0.3.2, 0.3.3,,,,,,
Change logCHANGELOG.markdown
Dependenciesbase (>=4.3 && <5), transformers (==0.2.*) [details]
CopyrightCopyright (C) 2012 Edward A. Kmett
AuthorEdward A. Kmett
MaintainerEdward A. Kmett <>
Home page
Bug tracker
Source repositoryhead: git clone git://
UploadedSun Jun 1 19:40:31 UTC 2014 by EdwardKmett
DistributionsDebian:, Fedora:, FreeBSD:, LTSHaskell:, NixOS:, Stackage:
Downloads142352 total (123 in last 30 days)
1 []
StatusDocs available [build log]
Successful builds reported [all 1 reports]




twoUse transformers 0.2. This must be selected manually and should probably only be used on older GHCs around 7.0.x.EnabledManual
threeUse transformers 0.3. This should toggle on/off automatically.DisabledManual

Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info


Maintainers' corner

For package maintainers and hackage trustees

Readme for transformers-compat-


Build Status

This provides a thin compatibility shim on top of transformers-0.2 to add the types that were added in transformers-0.3.

This enables users to maintain haskell-platform compatibility, while still gaining access ot the new functionality.

Contact Information

Contributions and bug reports are welcome!

Please feel free to contact me through github or on the #haskell IRC channel on

-Edward Kmett