#435: ban upwardly open version ranges in dependencies on base ----------------------------+----------------------------------------------- Reporter: duncan | Owner: Type: enhancement | Status: new Priority: normal | Milestone: Cabal-1.8 Component: Cabal library | Version: 1.2.3.0 Severity: normal | Resolution: Keywords: | Difficulty: normal Ghcversion: 6.8.3 | Platform: ----------------------------+----------------------------------------------- Old description:
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 #343). 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.
New description: 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. -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/435#comment:1 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects