I'm trying to use stack to install and run GCHJS. Can someone help me 
figure out this error?

I first created project 'proj01' using the ghcjs template via

    stack new proj01 ghcjs

Then I typed 

    stack build

It ran for a while, then gave an error messages that starts

    "While building custom Setup.hs for package semigroupoids- using 
.... <very long description>, Process exited with code ExitFailure 1"

But it didn't halt. Instead it started compiling Main.hs, and ended up 

"at least the following dependencies are missing: tagged >= 0.8.5 && <1 && 

I tried adding "tagged" to the extra-deps in the stack.yaml, but it didn't 

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