[Haskell-cafe] cabal file build-depends list sensitive to ordering

[Michael Snoyman]

Looks like a bug in Stack, can you open an issue on the issue tracker?

On Wed, Aug 30, 2017 at 4:41 PM, Olaf Klinke <olf at aatal-apotheke.de> wrote:

> Dear cafe,
>
> I discovered that stack/cabal is sensitive to permutations in the
> dependencies list. Is that desired behaviour and documented anywhere?
>
> #File stack.yaml
> resolver: lts-9.2
> packages:
> - '.'
> extra-deps: [iCalendar-0.4.0.3,mime-0.4.0.2,wx-0.92.3.0,wxcore-0.92.3.0,
> wxc-0.92.3.0,wxdirect-0.92.3.0]
> flags: {}
> extra-package-dbs: []
> system-ghc: false
>
> # In file myproject.cabal
>   build-depends:       base >= 4.7 && < 5
>                      , HaXml >= 1.13.3
>                      , iCalendar >= 0.3.7.3
>                      , containers
>                      , time >= 1.6.0.1
>                      , text
>                      , case-insensitive
>                      , xslx
>                      , xlsx-tabular
>                      , wx
>
> "stack build" generates the rather uninformative error message
> In the dependencies for myproject-0.2.1.0:
>     xslx must match -any, but the stack configuration has no specified
> version
>
> # In file myproject.cabal
>   build-depends:       base >= 4.7 && < 5
>                      , xlsx
>                      , xlsx-tabular
>                      , HaXml >= 1.13.3
>                      , iCalendar >= 0.3.7.3
>                      , containers
>                      , time >= 1.6.0.1
>                      , text
>                      , case-insensitive
>                      , wx
>
> This version builds just fine.
> -- Olaf
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