[Haskell-cafe] [Haskell-community] technical thoughts on stack

Christopher Allen cma at bitemyapp.com
Wed Sep 14 19:21:58 UTC 2016

What are you talking about?

$ stack build
simple-library- unregistering (local file changes: src/Lib.hs)
simple-library- build
Preprocessing library simple-library-
[1 of 1] Compiling Lib              ( src/Lib.hs,
.stack-work/dist/x86_64-linux/Cabal- )

/home/callen/work/simple-library/src/Lib.hs:7:3: warning: [-Wunused-do-bind]
    A do-notation statement discarded a result of type ‘[Char]’
    Suppress this warning by saying ‘_ <- return "woot"’
Preprocessing executable 'simple-library-exe' for simple-library-

On Wed, Sep 14, 2016 at 2:10 PM, Patrick Pelletier
<ppelleti at funwithsoftware.org> wrote:
> On 9/14/16 10:47 AM, David Feuer wrote:
>> While we're griping about stack: it seems to place compiler output from
>> -ddump-... in mysterious places that are hard to find without Google, and
>> (worse) it seems to do something with stack test output that even Google
>> can't discover.
> Also, compiler warnings get squirreled away in a file that I have to go
> hunting for.  It would be nice to have an option to print warnings (for
> local packages, not dependencies) to stderr.
> --Patrick
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Chris Allen
Currently working on http://haskellbook.com

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