So you have a project where you want to use your locally patched Netwire version and in your project you have a stack.yml, as an example: flags: {} packages: – ‘.’ extra-deps: {} resolver: lts-3.7 You also have an dependency on netwire declared in your cabal file. To use you patched Netwire in this project … Read more
You’ll need to use extra-lib-dirs and extra-libraries in the executable section of your .cabal file like so: name: MyApp version: 0.1.0.0 synopsis: homepage: author: simon.bourne category: build-type: Simple cabal-version: >=1.10 library exposed-modules: HelloWorld build-depends: base >= 4.7 && < 5 hs-source-dirs: src default-language: Haskell2010 executable MyApp main-is: Main.hs extra-lib-dirs: lib extra-libraries: helloWorld build-depends: base >= … Read more
stack install hakyll stack offers a curated set of packages that won’t blow your machine up. If you want to check what packages are available, or exactly what version is supported, or on what version of GHC you can get it, check out https://www.stackage.org/. For example, you can get hakyll 4.6.9.0 right now for both … Read more
The Numeric module includes several functions for showing an Integral type at various bases, including showIntAtBase. Here are some examples of use: import Numeric (showHex, showIntAtBase) import Data.Char (intToDigit) putStrLn $ showHex 12 “” — prints “c” putStrLn $ showIntAtBase 2 intToDigit 12 “” — prints “1100”
Profiling builds with Stack 1.0.0 and newer To build with profiling enabled: stack build –profile You may need to run stack clean first, but this should be fixed in Stack 1.5.0. To profile: stack exec –profile — <your program> +RTS <profiling options> where for <profiling options> you might want -p for time profiling or -h … Read more
Is stack a replacement for Cabal? Yes and No. In which cases should I use Stack instead of Cabal? What can Stack do that Cabal can’t? Stack uses the curated stackage packages by default. That being so, any dependencies are known to build together, avoiding version conflict problems (which, back when they were commonplace in … Read more