Hi, Am Donnerstag, den 20.08.2015, 00:33 +0200 schrieb Alexandre Delanoë: > running dht to build lambdabot-misc-plugins I get this error: > > The following packages have unmet dependencies: > sbuild-build-depends-haskell-lambdabot-misc-plugins-dummy : Depends: > libghc-transformers-dev (>= 0.2) > E: Unable to correct problems, you have held broken packages. > apt-get failed. > Package installation failed > > But ghc-pkg list | grep transformers => transformers-0.4.2.0 > > What is wrong ? > > Thanks for help/advices certain libraries (e.g. base, transformers, others) are shipped with the ghc package, so you do not have to depend on them explicitly. It does not hurt if you depend on just "libghc-transform-dev" explicitly, as ghc provides libghc-transform-dev. (Please see for youself and run "apt-cache show ghc". This is also one way to finding out what packages are provided by ghc.). But it hurts to depend on "libghc-transformers-dev (>= 0.2)" with a version number, as versioned Depends are never fulfilled by a Provides. Greetings, Joachim -- Joachim "nomeata" Breitner Debian Developer nomeata@debian.org | ICQ# 74513189 | GPG-Keyid: F0FBF51F JID: nomeata@joachim-breitner.de | http://people.debian.org/~nomeata
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