February 2011 - cabal-devel

darcs patch: Add a new checkout Command (and 1 more)
by Joachim Breitner 20 Jul '13

20 Jul '13

Hi, the small feature implemented by the attached patches could make it more convenient for people to quickly and easily contribute to hackage packages. Do you want me to open a ticket for this or can you appl yit right away? Thanks, Joachim 2 patches for repository http://darcs.haskell.org/cabal-install: Sun Nov 7 12:35:32 CET 2010 Joachim Breitner <mail(a)joachim-breitner.de> * Add a new checkout Command Given a package name, this uses the SourceRepo field of the newest versionf of that pacakge to figure out the repository location and calls the right VCS invocation. Sun Nov 7 12:43:35 CET 2010 Joachim Breitner <mail(a)joachim-breitner.de> * Add a --dry-run flag to cabal checkout

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hackage-server: index format
by Antoine Latter 20 Dec '12

20 Dec '12

Hi folks, The index tar-ball on Hackage has an odd naming convention. Package descriptions are given paths of the form: ./$pkg/$version/$pkg.cabal including the leading "./". I'm guessing that this is done as a method of distinguishing non-package meta-data. Is this a convention we need to preserve? Thanks, Antoine

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[Hackage] #777: cabal install {hledger, others} ExitFailure 11
by Hackage 14 Aug '12

14 Aug '12

#777: cabal install {hledger, others} ExitFailure 11 ---------------------------------+------------------------------------------ Reporter: philips | Owner: Type: defect | Status: new Priority: normal | Milestone: cabal-install-0.8 Component: cabal-install tool | Version: 1.8.0.2 Severity: normal | Keywords: ExitFailure Difficulty: unknown | Ghcversion: Platform: Linux | ---------------------------------+------------------------------------------ I am getting ExitFailure 11 when trying to install hledger on Debian and openSUSE. I reported this to the hledger author, Simon, and he said he is experiencing this on his machines too and for other packages, not just hledger. Log file attached. Summary below: {{{ ledger:~/ $ cabal install -v3 hledger Lots of debug output (see attached)... hledger-0.13 failed during the configure step. The exception was: ExitFailure 11 ledger:~/ $ cabal --version cabal-install version 0.8.2 using version 1.8.0.2 of the Cabal library ledger:~/ $ ghc --version The Glorious Glasgow Haskell Compilation System, version 6.12.1 }}} -- Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/777> Hackage <http://haskell.org/cabal/> Hackage: Cabal and related projects

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[Hackage] #780: Simpler support for isolated/sandboxed builds
by Hackage 25 Apr '12

25 Apr '12

#780: Simpler support for isolated/sandboxed builds ---------------------------------+------------------------------------------ Reporter: duncan | Owner: Type: enhancement | Status: new Priority: normal | Milestone: Component: cabal-install tool | Version: Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ---------------------------------+------------------------------------------ Cabal/cabal-install allows setting the install prefix and the package database. Together these allow creating isolated builds. This is clearly not sufficiently easy to use as there are now two projects that provide wrappers over cabal-install to provide more direct support for this use case: * http://github.com/creswick/cabal-dev/blob/master/README.md * http://www.haskell.org/haskellwiki/Capri The task is to investigate what user behaviour is desired and to integrate this in the best way with Cabal/cabal-install. This is probably related to: * ticket #556 about local config files (e.g. persistently setting some sandbox flag) * ticket #734 about supporting multiple local .cabal files * ticket #524 about supporting file, directory and url targets for packages and .cabal files -- Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/780> Hackage <http://haskell.org/cabal/> Hackage: Cabal and related projects

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[Hackage] #661: optionally select the oldest available dependencies rather than the newest
by Hackage 20 Apr '12

20 Apr '12

#661: optionally select the oldest available dependencies rather than the newest ----------------------------+----------------------------------------------- Reporter: benmachine | Owner: Type: enhancement | Status: new Priority: normal | Milestone: Component: Cabal library | Version: 1.6.0.3 Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ----------------------------+----------------------------------------------- When developing a package, you want to specify as wide a range of build- depends as possible, but it's often quite tedious to keep checking if your latest development effort hasn't made your package incompatible with some ancient version of a library you use. In view of this I think it would be helpful to have an option that asks cabal configure to pick the oldest possible version of each dependency, so you could quickly and easily ensure that at least the two endpoints are covered. -- Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/661> Hackage <http://haskell.org/cabal/> Hackage: Cabal and related projects

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[Hackage] #695: cabal install world always reinstalls programs
by Hackage 16 Apr '12

16 Apr '12

#695: cabal install world always reinstalls programs ---------------------------------+------------------------------------------ Reporter: duncan | Owner: Type: defect | Status: new Priority: normal | Milestone: Component: cabal-install tool | Version: Severity: normal | Keywords: Difficulty: easy (<4 hours) | Ghcversion: Platform: | ---------------------------------+------------------------------------------ cabal-install does not currently track the installed state of programs. It does now list them in the world file however. This leads to it always wanting to reinstall programs. Probably we do want to keep the programs in the world file, since we hopefully will track programs better in future. The temporary hack would be to filter out packages that have no lib when retrieving packages from the world file. -- Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/695> Hackage <http://haskell.org/cabal/> Hackage: Cabal and related projects

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[Hackage] #694: mention --constraint flag in error essage when dep planning fails
by Hackage 16 Apr '12

16 Apr '12

#694: mention --constraint flag in error essage when dep planning fails ---------------------------------+------------------------------------------ Reporter: duncan | Owner: Type: enhancement | Status: new Priority: normal | Milestone: Component: cabal-install tool | Version: Severity: normal | Keywords: Difficulty: easy (<4 hours) | Ghcversion: Platform: | ---------------------------------+------------------------------------------ Dependency planning problems can often be solved by running with --dry-run -v, seeing what the planner is selecting and forcing it to make different choices using the --constraint flag. When dependency planning fails with particular kinds of constraint problem, it may be useful to users to mention this. We should check if this advice applies to all cases where the dep planner fails, or if its only appropriate for certain classes of failure. -- Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/694> Hackage <http://haskell.org/cabal/> Hackage: Cabal and related projects

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[Hackage] #789: build-depends on packages that provide no library
by Hackage 10 Apr '12

10 Apr '12

#789: build-depends on packages that provide no library ---------------------------------+------------------------------------------ Reporter: duncan | Owner: Type: defect | Status: new Priority: normal | Milestone: Component: cabal-install tool | Version: HEAD Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ---------------------------------+------------------------------------------ It is possible to list build-depends on packages that have just an executable and no library. Currently the behaviour of cabal-install does not consider this and it will allow such packages to be pulled in as dependencies. It leads to problems however because the non-lib package never gets registered with ghc-pkg and so it leads to re-install loops. The solution is for cabal-install to not consider exe-only packages to be valid for satisfying a build-depends requirement. It should produce a suitable error message. Note that it must take into account the posibility that a newer or older version of a package may switch from exe only to exe+lib or just lib, or indeed vica versa. We should mark exe-only versions of the package as excluded with a reason. Then if the dep is not satisfiable then we can explain why all the excluded ones were excluded (ie due to not exposing a lib). -- Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/789> Hackage <http://haskell.org/cabal/> Hackage: Cabal and related projects

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[Hackage] #753: cabal executable chooses different versions of libraries than cabal library
by Hackage 09 Apr '12

09 Apr '12

#753: cabal executable chooses different versions of libraries than cabal library ---------------------------------+------------------------------------------ Reporter: guest | Owner: Type: defect | Status: new Priority: normal | Milestone: Component: cabal-install tool | Version: 1.8.0.6 Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ---------------------------------+------------------------------------------ Hi, cabal-install version 0.8.2 using version 1.8.0.2 of the Cabal library This bug was originally reported by a Debian user. the `cabal' executable, when run on the attached sample library, chooses base 3.0.3.2: $ cabal -v configure [...] Configuring foobar-0.0... Dependency base ==3.0.3.2: using base-3.0.3.2 [...] whereas, the library (via Setup.hs) correctly gets base 4.2.0.0, probably due to ghc's hiding of the earlier version $ runhaskell Setup.hs -v configure Configuring foobar-0.0... Dependency base -any: using base-4.2.0.0 [...] cabal-install should probably perform the same hiding that ghc does. Cheers, Iain -- Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/753> Hackage <http://haskell.org/cabal/> Hackage: Cabal and related projects

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[Hackage] #762: cabal-install failed to resolve dependencies
by Hackage 07 Apr '12

07 Apr '12

#762: cabal-install failed to resolve dependencies ---------------------------------+------------------------------------------ Reporter: james_m_chapman | Owner: Type: defect | Status: new Priority: normal | Milestone: Component: cabal-install tool | Version: 1.8.0.2 Severity: normal | Keywords: Difficulty: unknown | Ghcversion: Platform: | ---------------------------------+------------------------------------------ I tried to update my installation of the development version of Agda. I did a darcs pull from the repo (darcs get --lazy http://code.haskell.org/Agda) and then tried to build it: $ darcs pull $ cabal update $ cabal clean $ cabal install I get the following error: "Resolving dependencies... cabal: cannot configure haskeline-0.6.2.2. It requires mtl ==1.1.* For the dependency on mtl ==1.1.* there are these packages: mtl-1.1.0.0, mtl-1.1.0.1, mtl-1.1.0.2 and mtl-1.1.1.0. However none of them are available. mtl-1.1.0.0 was excluded because Agda-2.2.9 requires mtl ==2.0.* mtl-1.1.0.1 was excluded because Agda-2.2.9 requires mtl ==2.0.* mtl-1.1.0.2 was excluded because Agda-2.2.9 requires mtl ==2.0.* mtl-1.1.1.0 was excluded because Agda-2.2.9 requires mtl ==2.0.*" Agda's .cabal file is here http://code.haskell.org/Agda/Agda.cabal and contains the build-depends line haskeline >= 0.3 && < 0.7 The solution is to upgrade haskeline to the latest version by running: $ cabal install haskeline Should cabal-install have been able to work this out itself? -- Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/762> Hackage <http://haskell.org/cabal/> Hackage: Cabal and related projects

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