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2018-04-30fix broken SemigroupMonoid transition <<loop>>Joey Hess
Turns out that with ghc 8.2.2, the instructions given on the page don't work. And the cppless variant that I had compiles, but into effectively mappend = mappend so it loops. The only way I can see to make it work without cpp is to use mappend = (Sem.<>) which is ugly and a land mine waiting to explode if someone changes it to a nicer mappend = (<>) with a newer version of ghc which will compile it and work ok, while breaking it with 8.2.2. Sigh. I posted to haskell-cafe about this.
2018-04-23semigroup monoid change fallout; drop ghc 7 supportJoey Hess
Fix build with ghc 8.4, which broke due to the Semigroup Monoid change. See https://prime.haskell.org/wiki/Libraries/Proposals/SemigroupMonoid Dropped support for building propellor with ghc 7 (as in debian oldstable), to avoid needing to depend on the semigroups transitional package, but also because it's just too old to be worth supporting. If we indeed drop ghc 7 support entirely, some code to support "jessie" can be removed; concurrent-output can be de-embedded, and the Singletons code can be simplified. This commit was sponsored by Jack Hill on Patreon.
2017-07-29Added PROPELLOR_TRACE environment variableJoey Hess
which can be set to 1 to make propellor output serialized Propellor.Message.Trace values, for consumption by another program. This commit was sponsored by Ewen McNeill.
2015-12-19Clean build with ghc 7.10.Joey Hess
Import Prelude after modules that cause warnings due to AMP change
2015-01-19split out types to improve haddock for Propellor.TypesJoey Hess