Curly braces in the description field

[mniip]

When uploading my package to hackage (notably, cannot reproduce with cabal locally), it complains:

partial-records-0.1.0.0/partial-records.cabal:38:0: [v2.0] unexpected span: "|]"

The relevant line is:

...
description:         .                                                          
  ...                     
  > mkFromPartial "mkFoo" [t|Foo|] [|Foo { fld1 = Nothing, fld2 = Nothing }|]
  ...

The issue is only reproducible if } is not the last character on the line. Anything after the } gets reported in the error. This makes me think this is related to #774

My cabal version is:

cabal-install version 2.4.0.0
compiled using version 2.4.0.1 of the Cabal library 

but as I said I was unable to reproduce this locally in any form, only when uploading to hackage.

[phadej]

I assume this is the complete file:

partial-records.cabal.txt

[mniip]

Sure that works as an example.

[phadej]

This is not a Cabal bug.

When the package is uploaded to Hackage, Hackage uses also older versions of .cabal format parsers, to verify that old cabal-installs / tools using old Cabal libraries can handle it.

However, if you bump to cabal-version: 2.4 (the one you tested), the upload should surely work.

#744 is fixed in 2.2, so cabal-version: 2.2 should work too.

---

(warnings due testing only with a single .cabal file, not whole package)

partial-records % /opt/cabal/2.4/bin/cabal check
Warning: The following warnings are likely to affect your build negatively:
...
Warning: Hackage would reject this package.

partial-records % /opt/cabal/2.2/bin/cabal check
The following warnings are likely to affect your build negatively:
...
Hackage would reject this package.

partial-records % /opt/cabal/2.0/bin/cabal check
cabal: ./partial-records.cabal:46: unexpected span: "|]"