bug#36690: guix import hackage fails on key:value

bug#36690: guix import hackage fails on key:value

[Robert Vollmert]

Apparently, it’s valid for a cabal file to have key-value pairs
without a space, e.g.

benchmark benchmarks
  type: exitcode-stdio-1.0
  main-is:Speed.hs
  hs-source-dirs:test
  default-language: Haskell2010
  build-depends:
    base < 5,
    criterion,
    diagrams-core,
    diagrams-lib

from http://hackage.haskell.org/package/diagrams-lib-1.4.2.3/revision/2.cabal

guix import hackage breaks on this:

$ guix import hackage diagrams-lib
Importing `diagrams-lib` from hackage
Syntax error: unexpected token : main-is:Speed.hs (at line 175, column 2)
Syntax error: unexpected end of input
guix import: error: failed to download cabal file for package 'diagrams-lib'

bug#36690: guix import hackage fails on key:value

[Simon Tournier]

Hi,

This old bug#36690 [1] is about an error of the Cabal parser.

1: https://issues.guix.gnu.org/issue/36690

On mar., 16 juil. 2019 at 16:02, Robert Vollmert <rob@vllmrt.net> wrote:

> Apparently, it’s valid for a cabal file to have key-value pairs
> without a space, e.g.
>
> benchmark benchmarks
>   type: exitcode-stdio-1.0
>   main-is:Speed.hs
>   hs-source-dirs:test
>   default-language: Haskell2010
>   build-depends:
>     base < 5,
>     criterion,
>     diagrams-core,
>     diagrams-lib
>
> from http://hackage.haskell.org/package/diagrams-lib-1.4.2.3/revision/2.cabal
>
> guix import hackage breaks on this:
>
> $ guix import hackage diagrams-lib
> Importing `diagrams-lib` from hackage
> Syntax error: unexpected token : main-is:Speed.hs (at line 175, column 2)
> Syntax error: unexpected end of input
> guix import: error: failed to download cabal file for package 'diagrams-lib'

Now, “guix import hackage diagrams-lib” passes.  Well, I do not know if
the parser had been improved or if the Cabal file had been changed.

Without an example for testing the bug, I am in favor to close this
report.  WDYT?

Cheers,
simon