id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc,difficulty,ghcversion,platform
435,ban upwardly open version ranges in dependencies on base,duncan,,"This is wrong!
{{{
build-depends: base
}}}

This is still wrong!
{{{
build-depends: base >= 3
}}}

Each major release of the base package breaks most packages. Packages should specify an upper bound on the base version. Eg:

{{{
build-depends: base >= 3 && < 4
}}}
or equivalently:
{{{
build-depends: base == 3.*
}}}

Cabal should check for this and suggest a sensible upper version on the base package, given that we know that base follows the package version policy.

Note this is a special case for base but in general we should do this for all packages that opt-in to the versioning policy (see #434). Doing it for all such packages is a medium term goal. Doing it for base is quick and easy and has a lot of immediate benefits for the next release of base.",enhancement,closed,normal,Cabal-1.8,Cabal library,1.2.3.0,normal,fixed,,ross@…,normal,6.8.3,