3babb53 (Fraser Tweedale, 4 hours ago)
ci: cabal-install >= 3.0 does not know --symlink-bindir
Fixes: https://github.com/purebred-mua/purebred/issues/367
2f4db4c (Fraser Tweedale, 5 hours ago)
ci: add ghc 8.8 and 8.10 to matrix
5344f26 (Fraser Tweedale, 5 hours ago)
ci: extract apt sources to common def
We can use YAML anchor to define the APT sources only once. Unfortunately,
YAML has no array merge or extend capability so we cannot do similar for
the package list (because the versions of cabal and ghc vary).
Fixes: https://github.com/purebred-mua/purebred/issues/367