How to install a package using stack?

Question

Using cabal, I could install hakyll with the command:

cabal install hakyll

How can I do the same thing using stack?

For those looking to add a dependency (i.e. use another package, like text, in your code): Understanding stack’s model and avoiding its biggest gotcha: You almost certainly do not want to use stack install; per stack docs you have to hand-edit package.yaml to add the package to the dependencies section. — Nickolay, Commented May 1, 2018 at 12:50

Chris Stryczynski · Accepted Answer · 2019-02-03 22:19:13Z

58

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 GHC 7.8.4 and GHC 7.10.1. Pretty neat. - source

EDIT: I forgot to mention, Yuan Wang's method works for getting the version of hakyll that is not curated into stackage. It's up to you what version you need.

edited Feb 3, 2019 at 22:19

Chris Stryczynski

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answered Aug 1, 2015 at 20:34

user2913694

1

what about installing packages that are only on hackage but not on stackage? Is the preferred method to install cabal-install or to download the tarball and stack install it?
– mb21
Commented Oct 25, 2016 at 8:02
1

I tried stack install accelerate-examples and got huge Error: While constructing the build plan, the following exceptions were encountered which goes recursively when trying to fix it. Couldn't even google what the stack build plans are.
– Slaus
Commented Feb 4, 2020 at 6:02

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Giulio Vian · Accepted Answer · 2015-07-17 17:53:04Z

17

add hakyll in stack.yaml generated by stack init or stack new

yaml file should look like:

flags: {}
packages:
  - '.'
extra-deps:
  - hakyll-4.7.1.0
resolver: lts-2.15

after that, run stack solver installs it

https://github.com/commercialhaskell/stack/wiki/stack.yaml

edited Jul 17, 2015 at 17:53

Giulio Vian

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answered Jun 24, 2015 at 16:20

Yuan Wang

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16

Probably worth adding that stack install hakyll all by itself is probably sufficient to get the desired result.
– Michael Snoyman
Commented Jun 25, 2015 at 3:28
1

I think it's worth mentioning that this method is typically only done when the desired version of the package is not present in the selected snapshot. I believe the preferred method of package installation for a project is adding it to the *.cabal file's build-depends, or running stack install hakyll to test it out first.
– JoL
Commented Apr 24, 2017 at 16:17

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Nestor Tobon · Accepted Answer · 2021-06-01 20:58:26Z

5

This documentation worked for me

On package.yaml add the library under dependencies, for example:

dependencies:
- base >= 4.7 && < 5
- hakyll # added here

answered Jun 1, 2021 at 20:58

Nestor Tobon

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1

For some reason I feel recent versions of GHC have gotten unnecessarily complicated. I used to be able to use cabal. Now I have to go through all of this mess (and more) to get my old programs to compile.
– Shawn Eary
Commented Sep 24, 2021 at 19:59

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