ony / exherbo-cabal Goto Github PK

Currently when generating package which contains library and executable we miss SLOT="0" metadata. Since all executables will go in a same place with a same name they will collide in multi-slot installation.

Since range of versions can be represented as an enumeration of intermediate version it is possible to represent them within current Paludis dependencies format.
Moreover some packages declare their dependencies like "==1.1.* || ==1.0.* || ==0.11.* but asVersionIntervals re-organize them in ranges like >=0.11 && <0.12, >=1.0 && <1.2 effectively causing exception about unsupported version.

Backticks need escaping. Probably other special chars that are treated specially in bash strings.

See http://ix.io/kJP for output

Consider something like http://hackage.haskell.org/package/options

Besides that possibility to configure some aspects of generation might be useful.

Some packages provides Haskell interface to native libraries. For example opengles-0.7.0 contains:

extra-libraries: EGL, GLESv2

Another example is glib-0.13.1.1

pkgconfig-depends: glib-2.0, gobject-2.0

With pandoc-1.12 it should be possible to read haddock formatted package description using Text.Pandoc.Readers.Haddock.

language-c-quote-0.4.1 have:

  if impl(ghc >= 7.0) && impl(ghc < 7.2)
    build-depends:
      template-haskell >=2.5 && <2.6

  if impl(ghc >= 7.4) && impl(ghc < 7.6)
    build-depends:
      template-haskell >=2.7 && <2.8

That results in error:

Unsupported version range: >=2.5 && <2.6 && >=2.7 && <2.8

Looks like these condition both evaluated in true for GHC 7.10

base package dependency should be mapped on something like:

require hackage [ ghc_dep='>=7.10&<7.10.3' ]

There is definitely no way fully map all meta-info correctly. Thus it makes sense to generate TODO markers instead of fully aborting generation of particular package.
Something like

# TODO: LICENSE="OtherLicense"
# TODO: DEPENDENCIES+="unknown/EGL"

Many packages on hackage do not set standard licensing and use either UnspecifiedLicense or OtherLicense

See http://ix.io/kKj

See https://github.com/hasufell/hpath/blob/master/.travis.yml for an example

Instead of dev-haskell/ansi-wl-pprint[~0.6.6] (for optparse-applicative-0.12.0.0) we should produce dev-haskell/ansi-wl-pprint[~>0.6.6].

See gtk-0.14.5

custom-setup
  setup-depends: base >= 4.6,
                 Cabal >= 1.24 && < 1.25,
                 gtk2hs-buildtools >= 0.13.2.0 && < 0.14

Some packages provide pretty well configurable flags set which can be mapped to options and thus end up in different set of dependencies.

For rss-3000.2.0.4

Unsupported version range: >=1.1.2 && <1.5 && >=1.5 && <1.6

While

  if flag(old-locale)
    build-depends: time       >= 1.1.2 && < 1.5
                 , old-locale >= 1.0   && < 1.1
  else
    build-depends: time >= 1.5 && < 1.6

Like (>=1.1 && <1.2) || (>=1.2.0.6 && <1.3)

See http://ix.io/kKj

Sometimes test dependencies are covered by build dependencies. In that case, it is enough to mention them only in build phase and exclude from test phase.

Sample from haskell-src-exts

  Build-Tools:          happy >= 1.19