Switch to data-default from data-default-class

[Oleksandr-Zhabenko]

Switched to data-default instead of data-default-class. Fixed #1850

[jezen]

@Oleksandr-Zhabenko FYI, this is failing to build.

[Oleksandr-Zhabenko]

@Oleksandr-Zhabenko FYI, this is failing to build.

@jezen this is due to the following.

Stackage still is missing the newer version that will completely resolve the issue. It is present only on Hackage. Since the files changed are all .cabal files, I thought that it would update the needed versions from the Hackage, but it does not. It looks like it is needed to use conditional builds in the .cabal files and CPP extensions in the source files to check the package versions.

[Oleksandr-Zhabenko]

But if we use CPP and conditional .cabal files then the issue #1850 is still actual, because hledger still uses data-default package, which is preferred in the future, instead of data-default-class.

[Oleksandr-Zhabenko]

As thielema said, this change is for the future when the data-default-0.8 is available on Stackage.

[Oleksandr-Zhabenko]

But wait, stack has functionality to deal with such cases.

[Oleksandr-Zhabenko]

These two commits
seem to resolve the issue.

[Oleksandr-Zhabenko]

@jezen To use just one commit,
this one is done.

[jezen]

There are a couple of build failures on ubuntu-latest, --resolver lts-22.

One is like this.

tls                          > /tmp/stack-1603e7557b70df64/tls-1.8.0/Network/TLS/Parameters.hs:417:39: error: [GHC-39999]
tls                          >     • No instance for ‘Default ValidationCache’
tls                          >         arising from a use of ‘def’
tls                          >     • In the ‘sharedValidationCache’ field of a record
tls                          >       In the expression:
tls                          >         Shared
tls                          >           {sharedCredentials = mempty,
tls                          >            sharedSessionManager = noSessionManager, sharedCAStore = mempty,
tls                          >            sharedValidationCache = def, sharedHelloExtensions = []}
tls                          >       In an equation for ‘def’:
tls                          >           def
tls                          >             = Shared
tls                          >                 {sharedCredentials = mempty,
tls                          >                  sharedSessionManager = noSessionManager, sharedCAStore = mempty,
tls                          >                  sharedValidationCache = def, sharedHelloExtensions = []}
tls                          >     |
tls                          > 417 |             , sharedValidationCache = def
tls                          >     |                                       ^^^

The other is like this.

yesod-form-multi             > /home/runner/work/yesod/yesod/yesod-form-multi/Yesod/Form/MultiInput.hs:38:0: error:
yesod-form-multi             >      warning: extra tokens at end of #ifdef directive
yesod-form-multi             >        38 | #ifdef MIN_VERSION_shakespeare(2,0,18)
yesod-form-multi             >           | 
yesod-form-multi             >    |
yesod-form-multi             > 38 | #ifdef MIN_VERSION_shakespeare(2,0,18)
yesod-form-multi             >    | ^

Do you think you can fix these? Happy to support you on this.

[Oleksandr-Zhabenko]

The changes needed to be done for the correction of the first one is related to tls-2.1.2 package that should be used instead of tls-1.8.

But this leads to the following error:

connection > /tmp/stack-233a16a5e48d1819/connection-0.3.1/Network/Connection.hs:100:33: error:
connection > Not in scope: data constructor ‘TLS.SessionManager’
connection > Perhaps you meant variable ‘TLS.noSessionManager’ (imported from Network.TLS)
connection > Neither ‘Network.TLS’ nor ‘Network.TLS.Extra’ exports ‘SessionManager’.
connection > |
connection > 100 | connectionSessionManager mvar = TLS.SessionManager
connection > | ^^^^^^^^^^^^^^^^^^

And the connection-0.3.1 is the last available version, and their source repository is archived on GitHub by the author.
https://github.com/vincenthz/hs-connection
It is needed to ask the maintainer Vincent Hanquez vincent@snarc.org to at least add revision to the cabal file on Hackage, which includes tls >= 2.1.2 for the code to compile.

[Oleksandr-Zhabenko]

As for the CPP preprocessing macros, I think it is better to delete the ifdef part and use just the following if-else.

[Oleksandr-Zhabenko]

I have just tried to resolve the non-building cases, this led to updating many dependencies in the stack.yaml file on the project level. But still, the connection package is not compiled because it has no appropriate version, it is needed to contact @vincenthz to provide some workaround for this or to fork his archived repository and then try to add changes from there to the Hackage package connection.

[psibi]

And the connection-0.3.1 is the last available version, and their source repository is archived on GitHub by the author.
https://github.com/vincenthz/hs-connection

Can you switch to this maintained fork instead: https://hackage.haskell.org/package/crypton-connection ?

[Oleksandr-Zhabenko]

And the connection-0.3.1 is the last available version, and their source repository is archived on GitHub by the author.
https://github.com/vincenthz/hs-connection

Can you switch to this maintained fork instead: https://hackage.haskell.org/package/crypton-connection ?

It seems to be resolved. I will now squash commits to have just one final with the needed changes.

[psibi]

I see that there are still some CI errors. Probably we can remove the old resolver. I think having CI for the last 3 GHC major versions should be good enough.