All Questions
10 questions
2
votes
0
answers
146
views
How to suppress warnings from external packages?
My stack build shows warning from external packages, like:
happy > /tmp/stack-d6caed253e9f21bf/happy-1.20.0/src/ProduceGLRCode.lhs:224:12: warning: [-Wincomplete-uni-patterns]
...
- 24.8k
0
votes
0
answers
59
views
Does stack rerun hpack not only on build but already on change?
I'm using stack with hpack so that .cabal file is generated from hpack's package.yaml. Often times as I want to switch branch I struggle with constantly changing .cabal file.
I run git restore *....
- 197
0
votes
0
answers
65
views
Explain hpack macro operators
Today I was working on conferer library and discovered interesting syntax in hpack package.yaml file reminding me some macro language, but I cannot find anything about that topic - no bugs having ...
- 6,139
1
vote
1
answer
316
views
exclude temporarily a file from a `stack build` when using hpack (package.yaml)
One may work on a haskell file in the source-dirs directory and decide for now not to include this file in a stack build. Is there a simple way to exclude temporarily the file form the build?
The ...
- 2,960
0
votes
1
answer
1k
views
module ‘main:Main’ is defined in multiple files - but they're the same file
I start a new stack project with stack new demo and define a second file Other.hs in the apps folder. There are no dependencies, just:
module Other where
main :: IO ()
main = print 4
And in package....
- 4,731
1
vote
1
answer
106
views
Test for GHC compile time errors
I'm working on proto-lens#400 tweaking a Haskell code generator. In one of the tests I'd like to verify that certain API has not been built. Specifically, I want to ensure that a certain type of ...
- 61.4k
2
votes
0
answers
144
views
Is it possible to have Haskell source files with a different extension?
In any of the build tools commonly used in Haskell projects (i.e stack, cabal, or hpack), is it possible to have a source directory which contains source files with a different extension (i.e. other ...
- 6,813
6
votes
2
answers
2k
views
Building multiple executables in the default Haskell Stack project
I used the default stack new to setup a project that has a server and a client as separate executables. I altered the package.yaml file in what seems like the right way (As of April 21, 2020 "There is ...
- 27.2k
2
votes
0
answers
185
views
Using hsc2hs with HPack and Stack
I'd like to use hsc2hs via Stack and HPack. The problem is, since HPack doesn't allow me to list the .hsc file as a source file, only .hs, changes to the .hsc file don't trigger a rebuild in stack ...
- 27.7k
1
vote
1
answer
63
views
Hpack or pre-processor platform info
I am using hpack+stack for a project and there is a hardcoded path (used for debugging, I don't want to do this properly) which are differs for mac os x and linux. Right now I have it on a gitignored ...
- 6,886