Hi Guix, I’m in the middle of upgrading our Haskell packages. (Actually, I’m just yak shaving. I need “pandoc-citeproc” for “r-knitr”…)
I noticed that upgrading Haskell packages is a pain in the neck because of propagated inputs. It seems that not all packages have fully declared dependencies and just work accidentally because of propagated inputs of a related package. This also makes upgrades more difficult because I can get substitutes from Hydra that depend on older versions of some Haskell packages. It looks like Haskell binaries actually embed references to other Haskell packages, so I’m not sure we actually need to propagate anything at all. Could someone please confirm this? ~~ Ricardo
