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
Cabal doesn’t keep track of what it’s installed, it just uses ghc’s library mechanism (or that of some other compiler if you’re not using ghc), so you can use rm -r ~/.ghc to remove all locally-installed libraries. If you have multiple ghc’s installed, and you only want to remove the libs for a specific ghc, … Read more
This is well supported with Cabal. As follows (from xmonad): Import Paths_$myprogram – a file Cabal creates with lots of metadata from the .cabal file, along with a the module for handling version numbers: import Paths_xmonad (version) import Data.Version (showVersion) Add a print statement to print the ‘version’ field provided by Paths_$myprogram: case args of … Read more
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
You can ghc-pkg unregister a specific version, like so: $ ghc-pkg unregister –force regex-compat-0.95.1 That should be sufficient.
This is a known bug. and a good catch! The pull request https://github.com/haskell/haskell-mode/pull/1116/files solves it.
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