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I was able to use cabal-dev to build some packages that cabal was having issues with. ( help with cabal install package shadowing errors ). How does one then install and use them? I tried copying the package database files into the ~/.ghc/x86_64-linux-7.0.4/package.conf.d folder, and running ghc-pkg recache --user, but no luck. (They do show up in ghc-pkg now though).
This seems to work, though it’s more crap I have to put in my zshrc…
hope it helps someone. (of course you’ll have to adjust paths appropriately; the old ones can be found by running
ghc-pkg list).