Marius Bakke <mbakke@fastmail.com> writes:

> Alexandru-Sergiu Marton <brown121407@gmail.com> writes:
>
>> * gnu/packages/haskell-xyz.scm (ghc-persistent-template): Update to 2.8.0.
>
> Applied, thanks!

Actually, this change caused a build failure in 'ghc-yesod-persistent'
due to version constraints.  I managed to fix it by simply updating the
package.

In the future, when bumping library packages like these, it's good if
you run 'guix refresh -l <package>' and check that some of the dependent
packages still work.

Sorry for the extra packaging burden!  :-)