Incorrect cabal-version is generated

[gromakovsky]

My package.yaml is very small:

name:                indigo

library:
  source-dirs: src
  generated-other-modules:
    - Paths_indigo

  default-extensions: [ RebindableSyntax, OverloadedStrings]

It produces the following indigo.cabal file:

cabal-version: 2.0

-- This file has been generated from package.yaml by hpack version 0.34.2.
--
-- see: https://github.com/sol/hpack

name:           indigo
version:        0.0.0
build-type:     Simple

library
  exposed-modules:
      Indigo
  other-modules:
      Paths_indigo
  autogen-modules:
      Paths_indigo
  hs-source-dirs:
      src
  default-extensions: RebindableSyntax OverloadedStrings
  default-language: Haskell2010

When I run cabal build I get this:

cabal: The package uses RebindableSyntax with OverloadedStrings or
OverloadedLists in default-extensions, and also Paths_ autogen module. That
configuration is known to cause compile failures with Cabal < 2.2. To use
these default-extensions with Paths_ autogen module specify at least
'cabal-version: 2.2'.

So I suppose hpack should set cabal-version to 2.2 in this case. As a workaround I do

verbatim:
  cabal-version: 2.2

but it would be nicer if it was handled by hpack itself.

[sol]

@gromakovsky hey! Thanks for reporting this. #405 addresses this. Please let me know if you have any feedback.

[gromakovsky]

#405 is closed and doesn't have any commits as of now. AFAIU the fix is in bd27333. I'll test it when a new release reaches me or maybe will test manually with master. This issue is closed anyway, so there should be no rush. Thanks for the fix!