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

[David McBride]

The rule of thumb seems to be, if you do a stack build and it decides to
build multiple packages, it hides this log info.

I understand why it does that, I should be able to build lens without
worrying about tons of spurious output, but at the same time it is common
for me to have an entire tree of packages I'm developing and it often
obscures errors that are happening in my own packages.  At the very least,
if it is only building local packages, I'd very much like to see that
output.

On Wed, Sep 14, 2016 at 3:42 PM, Patrick Pelletier <code at funwithsoftware.org
> wrote:

> On 9/14/16 12:21 PM, Christopher Allen wrote:
>
>> What are you talking about?
>>
>> $ stack build
>> simple-library-0.1.0.0: unregistering (local file changes: src/Lib.hs)
>> simple-library-0.1.0.0: build
>> Preprocessing library simple-library-0.1.0.0...
>> [1 of 1] Compiling Lib              ( src/Lib.hs,
>> .stack-work/dist/x86_64-linux/Cabal-1.24.0.0/build/Lib.o )
>>
>> /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-0.1.0.0...
>>
>
> Weird.  That's not how it works for me:
>
> whiteandnerdy:normalize ppelleti$ stack build
> normalization-insensitive-2.0: unregistering (local file changes:
> Data/Unicode/NormalizationInsensitive.hs Data/Unicode/NormalizationInse
> nsitive/Internal.hs)
> normalization-insensitive-2.0: configure
> normalization-insensitive-2.0: build
> normalization-insensitive-2.0: copy/register
> photos-0.1.0.0: configure
> photos-0.1.0.0: build
> photos-0.1.0.0: copy/register
> Completed 2 action(s).
> whiteandnerdy:normalize ppelleti$ cat .stack-work/logs/normalization
> -insensitive-2.0.log
> Configuring normalization-insensitive-2.0...
> Preprocessing library normalization-insensitive-2.0...
> [1 of 3] Compiling Data.Unicode.NormalizationInsensitive.Internal (
> Data/Unicode/NormalizationInsensitive/Internal.hs,
> .stack-work/dist/x86_64-osx/Cabal-1.22.5.0/build/Data/Unicod
> e/NormalizationInsensitive/Internal.o )
>
> Data/Unicode/NormalizationInsensitive/Internal.hs:30:1: Warning:
>     The import of ‘Data.Bool’ is redundant
>       except perhaps to import instances from ‘Data.Bool’
>     To import instances alone, use: import Data.Bool()
>
> Data/Unicode/NormalizationInsensitive/Internal.hs:38:1: Warning:
>     The import of ‘otherwise, &&, <=, +’
>     from module ‘Prelude’ is redundant
>
> Data/Unicode/NormalizationInsensitive/Internal.hs:57:1: Warning:
>     Module ‘Data.ByteString.UTF8.Normalize’ is deprecated:
>       Convert ByteString to Text and then normalize
>
> Data/Unicode/NormalizationInsensitive/Internal.hs:135:1: Warning:
>     Top-level binding with no type signature: mode :: NormalizationMode
>
> Data/Unicode/NormalizationInsensitive/Internal.hs:143:17: Warning:
>     In the use of ‘B.normalize’
>     (imported from Data.ByteString.UTF8.Normalize):
>     Deprecated: "Convert ByteString to Text and then normalize"
>
> Data/Unicode/NormalizationInsensitive/Internal.hs:147:33: Warning:
>     In the use of ‘B.normalize’
>     (imported from Data.ByteString.UTF8.Normalize):
>     Deprecated: "Convert ByteString to Text and then normalize"
> [2 of 3] Compiling Data.Unicode.NormalizationInsensitive.Unsafe (
> Data/Unicode/NormalizationInsensitive/Unsafe.hs,
> .stack-work/dist/x86_64-osx/Cabal-1.22.5.0/build/Data/Unicod
> e/NormalizationInsensitive/Unsafe.o )
> [3 of 3] Compiling Data.Unicode.NormalizationInsensitive (
> Data/Unicode/NormalizationInsensitive.hs, .stack-work/dist/x86_64-osx/Ca
> bal-1.22.5.0/build/Data/Unicode/NormalizationInsensitive.o )
>
> Data/Unicode/NormalizationInsensitive.hs:25:31: Warning:
>     ‘normalize’ is exported by ‘Normalizable(normalize)’ and ‘normalize’
> In-place registering normalization-insensitive-2.0...
> Installing library in
> /Users/ppelleti/programming/haskell/normalize/.stack-work/in
> stall/x86_64-osx/lts-6.1/7.10.3/lib/x86_64-osx-ghc-7.10.3/
> normalization-insensitive-2.0-KLVtcrPtbow6nG8kRB6WPM
> Registering normalization-insensitive-2.0...
> whiteandnerdy:normalize ppelleti$
>
> I hadn't even been aware of these warnings in the package I was
> developing, until Harendra Kumar pointed them out to me, after I had
> uploaded a candidate to Hackage.
>
> --Patrick
>
>
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