[Hackage] #884: Changed dependencies in locally installed packages ignord
#884: Changed dependencies in locally installed packages ignord ---------------------------------+------------------------------------------ Reporter: nomeata | Owner: Type: enhancement | Status: new Priority: normal | Milestone: Component: cabal-install tool | Version: 1.8.0.6 Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ---------------------------------+------------------------------------------ Hello, in Debian, I have patched yesod-json-0.2.1 to depend on aeson instead of aeson-native, because we want only one aeson and blaze-textual package in Debian. Still, if I use cabal install to install a package that depends on yesod- json, it wants to re-build yesod-json against the -native variants. It seems that cabal install does not take the actual dependencies of installed packages into account and uses the Hackage provided information for them as well. What it should do instead is: If a dependency of some packages that is to be installed can be fulfilled by a locally installed package, and none of its dependencies (as known by ghc-pkg) have to be rebuild, then this package should be used. Only if the package in question has to be rebuild, the dependencies according to hackage should be taken into account. The work around in Debian is to bump the version number, adding a vendor level (0.2.1.0.1), but it would be nice if this could be avoided. -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/884 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects
#884: Changed dependencies in locally installed packages ignord ---------------------------------+------------------------------------------ Reporter: nomeata | Owner: Type: enhancement | Status: new Priority: normal | Milestone: Component: cabal-install tool | Version: HEAD Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ---------------------------------+------------------------------------------ Changes (by duncan): * version: 1.8.0.6 => HEAD Comment: This is a known issue. It's a limitation of the current cabal-install dependency solver. It's not that it's taking the information from the wrong place, but as a simplifying assumption it assumes that if the versions are the same, they are the same. cabal-install will pick the installed instance rather than the source instance if its dependencies fall within the ranges that the solver determines are ok. In this case that doesn't happen because its got different dependencies. The current solution is indeed to bump the version. The current dev version of cabal-install has a way to ask explicitly to use the installed instance, ignoring the installed instance. Additionally, the new cabal-install solver will probably do a better job in cases like these. It considers each installed and source instances separately. -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/884#comment:1 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects
#884: Changed dependencies in locally installed packages ignord ---------------------------------+------------------------------------------ Reporter: nomeata | Owner: Type: enhancement | Status: new Priority: normal | Milestone: Component: cabal-install tool | Version: HEAD Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ---------------------------------+------------------------------------------ Comment(by elga): * [http://www.releve-identite-operateur.fr/rio-bouygues.html rio bouygues] -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/884#comment:2 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects
#884: Changed dependencies in locally installed packages ignord ---------------------------------+------------------------------------------ Reporter: nomeata | Owner: Type: enhancement | Status: new Priority: normal | Milestone: Component: cabal-install tool | Version: HEAD Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ---------------------------------+------------------------------------------ Comment(by edouard): Portabilite, portage, transfert de numero de telephone, le code Rio ou Releve d'Identite Operateur peut presenter differentes appellations. Toutefois, l'objectif reste le meme: changer d'operateur de telephonie mobiun tout en gardant son numero de telephone actuel. [http://www.releve- identite-operateur.fr/numbero-de-virgin-mobile.html virgin mobile] -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/884#comment:3 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects
#884: Changed dependencies in locally installed packages ignord ---------------------------------+------------------------------------------ Reporter: nomeata | Owner: Type: enhancement | Status: new Priority: normal | Milestone: cabal-install-0.14 Component: cabal-install tool | Version: HEAD Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ---------------------------------+------------------------------------------ Changes (by kosmikus): * milestone: => cabal-install-0.14 Comment: The new solver will be in cabal-install-1.14, but it's not yet clear whether it will be the default. It can be activated using the {{{--solver=modular}}} flag. The new solver should indeed fix the problem. -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/884#comment:2 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects
#884: Changed dependencies in locally installed packages ignord ---------------------------------+------------------------------------------ Reporter: nomeata | Owner: Type: enhancement | Status: new Priority: normal | Milestone: cabal-install-0.14 Component: cabal-install tool | Version: HEAD Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ---------------------------------+------------------------------------------ Comment(by kosmikus): Also see #615. -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/884#comment:3 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects
#884: Changed dependencies in locally installed packages ignord ---------------------------------+------------------------------------------ Reporter: nomeata | Owner: Type: enhancement | Status: new Priority: normal | Milestone: cabal-install-0.14 Component: cabal-install tool | Version: HEAD Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ---------------------------------+------------------------------------------ Comment(by kosmikus): Also see #782. -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/884#comment:4 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects
#884: Changed dependencies in locally installed packages ignord ---------------------------------+------------------------------------------ Reporter: nomeata | Owner: kosmikus Type: enhancement | Status: new Priority: normal | Milestone: cabal-install-0.14 Component: cabal-install tool | Version: HEAD Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ---------------------------------+------------------------------------------ Changes (by kosmikus): * owner: => kosmikus -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/884#comment:5 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects
#884: Changed dependencies in locally installed packages ignord ---------------------------------+------------------------------------------ Reporter: nomeata | Owner: kosmikus Type: enhancement | Status: closed Priority: normal | Milestone: cabal-install-0.14 Component: cabal-install tool | Version: HEAD Severity: normal | Resolution: fixed Keywords: | Difficulty: unknown Ghcversion: | Platform: ---------------------------------+------------------------------------------ Changes (by kosmikus): * status: new => closed * resolution: => fixed Comment: Should work with the new solver. -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/884#comment:6 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects
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